diff --git a/.vscode/settings.json b/.vscode/settings.json
index 33fe63f7..04df0993 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
     "python.linting.flake8Enabled": true,
-    "python.linting.enabled": true
+    "python.linting.enabled": true,
+	"eslint.workingDirectories": [{ "mode": "auto" }]
 }
\ No newline at end of file
diff --git a/rsconcept/frontend/.eslintrc.json b/rsconcept/frontend/.eslintrc.json
new file mode 100644
index 00000000..f3b0f326
--- /dev/null
+++ b/rsconcept/frontend/.eslintrc.json
@@ -0,0 +1,28 @@
+{
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "extends": [
+        "standard-with-typescript",
+        "plugin:react/recommended",
+        "plugin:react/jsx-runtime"
+    ],
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module",
+        "project": ["tsconfig.json"]
+    },
+    "plugins": [
+        "react", "simple-import-sort"
+    ],
+    "rules": {
+        "simple-import-sort/imports": "error",
+        "@typescript-eslint/explicit-function-return-type": "off",
+        "@typescript-eslint/semi": "off",
+        "@typescript-eslint/strict-boolean-expressions": "off",
+        "@typescript-eslint/space-before-function-paren": "off",
+        "@typescript-eslint/indent": "off",
+        "object-shorthand": "off"
+    }
+}
diff --git a/rsconcept/frontend/package-lock.json b/rsconcept/frontend/package-lock.json
index f642658a..3e92c5f6 100644
--- a/rsconcept/frontend/package-lock.json
+++ b/rsconcept/frontend/package-lock.json
@@ -29,12 +29,20 @@
         "react-tabs": "^6.0.1",
         "react-toastify": "^9.1.3",
         "styled-components": "^6.0.4",
-        "typescript": "^4.9.5",
         "web-vitals": "^2.1.4"
       },
       "devDependencies": {
         "@babel/plugin-proposal-private-property-in-object": "^7.21.0",
-        "tailwindcss": "^3.3.2"
+        "@typescript-eslint/eslint-plugin": "^5.62.0",
+        "eslint": "^8.45.0",
+        "eslint-config-standard-with-typescript": "^37.0.0",
+        "eslint-plugin-import": "^2.27.5",
+        "eslint-plugin-n": "^16.0.1",
+        "eslint-plugin-promise": "^6.1.1",
+        "eslint-plugin-react": "^7.33.0",
+        "eslint-plugin-simple-import-sort": "^10.0.0",
+        "tailwindcss": "^3.3.2",
+        "typescript": "^5.1.6"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
@@ -2530,9 +2538,9 @@
       }
     },
     "node_modules/@eslint-community/regexpp": {
-      "version": "4.5.1",
-      "resolved": "https://registry.npmjs.org/@eslint-community/regexpp/-/regexpp-4.5.1.tgz",
-      "integrity": "sha512-Z5ba73P98O1KUYCCJTUeVpja9RcGoMdncZ6T49FCUl2lN38JtCJ+3WgIDBv0AuY4WChU5PmtJmOCTlN6FZTFKQ==",
+      "version": "4.6.1",
+      "resolved": "https://registry.npmjs.org/@eslint-community/regexpp/-/regexpp-4.6.1.tgz",
+      "integrity": "sha512-O7x6dMstWLn2ktjcoiNLDkAGG2EjveHL+Vvc+n0fXumkJYAcSqcVYKtwDU+hDZ0uDUsnUagSYaZrOLAYE8un1A==",
       "engines": {
         "node": "^12.0.0 || ^14.0.0 || >=16.0.0"
       }
@@ -5956,6 +5964,48 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/builtins": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/builtins/-/builtins-5.0.1.tgz",
+      "integrity": "sha512-qwVpFEHNfhYJIzNRBvd2C1kyo6jz3ZSMPyyuR47OPdiKWlbYnZNyDWuyR175qDnAJLiCo5fBBqPb3RiXgWlkOQ==",
+      "dev": true,
+      "dependencies": {
+        "semver": "^7.0.0"
+      }
+    },
+    "node_modules/builtins/node_modules/lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "dev": true,
+      "dependencies": {
+        "yallist": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/builtins/node_modules/semver": {
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
+      "dev": true,
+      "dependencies": {
+        "lru-cache": "^6.0.0"
+      },
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/builtins/node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+      "dev": true
+    },
     "node_modules/bytes": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
@@ -7515,9 +7565,9 @@
       }
     },
     "node_modules/eslint": {
-      "version": "8.44.0",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-8.44.0.tgz",
-      "integrity": "sha512-0wpHoUbDUHgNCyvFB5aXLiQVfK9B0at6gUvzy83k4kAsQ/u769TQDX6iKC+aO4upIHO9WSaA3QoXYQDHbNwf1A==",
+      "version": "8.45.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-8.45.0.tgz",
+      "integrity": "sha512-pd8KSxiQpdYRfYa9Wufvdoct3ZPQQuVuU5O6scNgMuOMYuxvH0IGaYK0wUFjo4UYYQQCUndlXiMbnxopwvvTiw==",
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.2.0",
         "@eslint-community/regexpp": "^4.4.0",
@@ -7544,7 +7594,6 @@
         "globals": "^13.19.0",
         "graphemer": "^1.4.0",
         "ignore": "^5.2.0",
-        "import-fresh": "^3.0.0",
         "imurmurhash": "^0.1.4",
         "is-glob": "^4.0.0",
         "is-path-inside": "^3.0.3",
@@ -7556,7 +7605,6 @@
         "natural-compare": "^1.4.0",
         "optionator": "^0.9.3",
         "strip-ansi": "^6.0.1",
-        "strip-json-comments": "^3.1.0",
         "text-table": "^0.2.0"
       },
       "bin": {
@@ -7596,6 +7644,53 @@
         "eslint": "^8.0.0"
       }
     },
+    "node_modules/eslint-config-standard": {
+      "version": "17.1.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-standard/-/eslint-config-standard-17.1.0.tgz",
+      "integrity": "sha512-IwHwmaBNtDK4zDHQukFDW5u/aTb8+meQWZvNFWkiGmbWjD6bqyuSSBxxXKkCftCUzc1zwCH2m/baCNDLGmuO5Q==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "peerDependencies": {
+        "eslint": "^8.0.1",
+        "eslint-plugin-import": "^2.25.2",
+        "eslint-plugin-n": "^15.0.0 || ^16.0.0 ",
+        "eslint-plugin-promise": "^6.0.0"
+      }
+    },
+    "node_modules/eslint-config-standard-with-typescript": {
+      "version": "37.0.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-standard-with-typescript/-/eslint-config-standard-with-typescript-37.0.0.tgz",
+      "integrity": "sha512-V8I/Q1eFf9tiOuFHkbksUdWO3p1crFmewecfBtRxXdnvb71BCJx+1xAknlIRZMwZioMX3/bPtMVCZsf1+AjjOw==",
+      "dev": true,
+      "dependencies": {
+        "@typescript-eslint/parser": "^5.52.0",
+        "eslint-config-standard": "17.1.0"
+      },
+      "peerDependencies": {
+        "@typescript-eslint/eslint-plugin": "^5.52.0",
+        "eslint": "^8.0.1",
+        "eslint-plugin-import": "^2.25.2",
+        "eslint-plugin-n": "^15.0.0 || ^16.0.0 ",
+        "eslint-plugin-promise": "^6.0.0",
+        "typescript": "*"
+      }
+    },
     "node_modules/eslint-import-resolver-node": {
       "version": "0.3.7",
       "resolved": "https://registry.npmjs.org/eslint-import-resolver-node/-/eslint-import-resolver-node-0.3.7.tgz",
@@ -7638,6 +7733,25 @@
         "ms": "^2.1.1"
       }
     },
+    "node_modules/eslint-plugin-es-x": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-es-x/-/eslint-plugin-es-x-7.2.0.tgz",
+      "integrity": "sha512-9dvv5CcvNjSJPqnS5uZkqb3xmbeqRLnvXKK7iI5+oK/yTusyc46zbBZKENGsOfojm/mKfszyZb+wNqNPAPeGXA==",
+      "dev": true,
+      "dependencies": {
+        "@eslint-community/eslint-utils": "^4.1.2",
+        "@eslint-community/regexpp": "^4.6.0"
+      },
+      "engines": {
+        "node": "^14.18.0 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ota-meshi"
+      },
+      "peerDependencies": {
+        "eslint": ">=8"
+      }
+    },
     "node_modules/eslint-plugin-flowtype": {
       "version": "8.0.3",
       "resolved": "https://registry.npmjs.org/eslint-plugin-flowtype/-/eslint-plugin-flowtype-8.0.3.tgz",
@@ -7754,10 +7868,80 @@
         "eslint": "^3 || ^4 || ^5 || ^6 || ^7 || ^8"
       }
     },
+    "node_modules/eslint-plugin-n": {
+      "version": "16.0.1",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-n/-/eslint-plugin-n-16.0.1.tgz",
+      "integrity": "sha512-CDmHegJN0OF3L5cz5tATH84RPQm9kG+Yx39wIqIwPR2C0uhBGMWfbbOtetR83PQjjidA5aXMu+LEFw1jaSwvTA==",
+      "dev": true,
+      "dependencies": {
+        "@eslint-community/eslint-utils": "^4.4.0",
+        "builtins": "^5.0.1",
+        "eslint-plugin-es-x": "^7.1.0",
+        "ignore": "^5.2.4",
+        "is-core-module": "^2.12.1",
+        "minimatch": "^3.1.2",
+        "resolve": "^1.22.2",
+        "semver": "^7.5.3"
+      },
+      "engines": {
+        "node": ">=16.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/mysticatea"
+      },
+      "peerDependencies": {
+        "eslint": ">=7.0.0"
+      }
+    },
+    "node_modules/eslint-plugin-n/node_modules/lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "dev": true,
+      "dependencies": {
+        "yallist": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/eslint-plugin-n/node_modules/semver": {
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
+      "dev": true,
+      "dependencies": {
+        "lru-cache": "^6.0.0"
+      },
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/eslint-plugin-n/node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+      "dev": true
+    },
+    "node_modules/eslint-plugin-promise": {
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-promise/-/eslint-plugin-promise-6.1.1.tgz",
+      "integrity": "sha512-tjqWDwVZQo7UIPMeDReOpUgHCmCiH+ePnVT+5zVapL0uuHnegBUs2smM13CzOs2Xb5+MHMRFTs9v24yjba4Oig==",
+      "dev": true,
+      "engines": {
+        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+      },
+      "peerDependencies": {
+        "eslint": "^7.0.0 || ^8.0.0"
+      }
+    },
     "node_modules/eslint-plugin-react": {
-      "version": "7.32.2",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-react/-/eslint-plugin-react-7.32.2.tgz",
-      "integrity": "sha512-t2fBMa+XzonrrNkyVirzKlvn5RXzzPwRHtMvLAtVZrt8oxgnTQaYbU6SXTOO1mwQgp1y5+toMSKInnzGr0Knqg==",
+      "version": "7.33.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-react/-/eslint-plugin-react-7.33.0.tgz",
+      "integrity": "sha512-qewL/8P34WkY8jAqdQxsiL82pDUeT7nhs8IsuXgfgnsEloKCT4miAV9N9kGtx7/KM9NH/NCGUE7Edt9iGxLXFw==",
       "dependencies": {
         "array-includes": "^3.1.6",
         "array.prototype.flatmap": "^1.3.1",
@@ -7772,7 +7956,7 @@
         "object.values": "^1.1.6",
         "prop-types": "^15.8.1",
         "resolve": "^2.0.0-next.4",
-        "semver": "^6.3.0",
+        "semver": "^6.3.1",
         "string.prototype.matchall": "^4.0.8"
       },
       "engines": {
@@ -7820,6 +8004,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/eslint-plugin-simple-import-sort": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-simple-import-sort/-/eslint-plugin-simple-import-sort-10.0.0.tgz",
+      "integrity": "sha512-AeTvO9UCMSNzIHRkg8S6c3RPy5YEwKWSQPx3DYghLedo2ZQxowPFLGDN1AZ2evfg6r6mjBSZSLxLFsWSu3acsw==",
+      "dev": true,
+      "peerDependencies": {
+        "eslint": ">=5.0.0"
+      }
+    },
     "node_modules/eslint-plugin-testing-library": {
       "version": "5.11.0",
       "resolved": "https://registry.npmjs.org/eslint-plugin-testing-library/-/eslint-plugin-testing-library-5.11.0.tgz",
@@ -16973,15 +17166,15 @@
       }
     },
     "node_modules/typescript": {
-      "version": "4.9.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
-      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==",
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.6.tgz",
+      "integrity": "sha512-zaWCozRZ6DLEWAWFrVDz1H6FVXzUSfTy5FUMWsQlU8Ym5JP9eO4xkTIROFCQvhQf61z6O/G6ugw3SgAnvvm+HA==",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=14.17"
       }
     },
     "node_modules/unbox-primitive": {
diff --git a/rsconcept/frontend/package.json b/rsconcept/frontend/package.json
index 1bf47974..7b4f8c10 100644
--- a/rsconcept/frontend/package.json
+++ b/rsconcept/frontend/package.json
@@ -24,7 +24,6 @@
     "react-tabs": "^6.0.1",
     "react-toastify": "^9.1.3",
     "styled-components": "^6.0.4",
-    "typescript": "^4.9.5",
     "web-vitals": "^2.1.4"
   },
   "scripts": {
@@ -33,12 +32,6 @@
     "test": "react-scripts test",
     "eject": "react-scripts eject"
   },
-  "eslintConfig": {
-    "extends": [
-      "react-app",
-      "react-app/jest"
-    ]
-  },
   "browserslist": {
     "production": [
       ">0.2%",
@@ -53,6 +46,15 @@
   },
   "devDependencies": {
     "@babel/plugin-proposal-private-property-in-object": "^7.21.0",
-    "tailwindcss": "^3.3.2"
+    "@typescript-eslint/eslint-plugin": "^5.62.0",
+    "eslint": "^8.45.0",
+    "eslint-config-standard-with-typescript": "^37.0.0",
+    "eslint-plugin-import": "^2.27.5",
+    "eslint-plugin-n": "^16.0.1",
+    "eslint-plugin-promise": "^6.1.1",
+    "eslint-plugin-react": "^7.33.0",
+    "eslint-plugin-simple-import-sort": "^10.0.0",
+    "tailwindcss": "^3.3.2",
+    "typescript": "^5.1.6"
   }
 }
diff --git a/rsconcept/frontend/src/App.tsx b/rsconcept/frontend/src/App.tsx
index a4b1f802..f9aed031 100644
--- a/rsconcept/frontend/src/App.tsx
+++ b/rsconcept/frontend/src/App.tsx
@@ -1,20 +1,20 @@
 import { Route, Routes } from 'react-router-dom';
 
+import Footer from './components/Footer';
 import Navigation from './components/Navigation/Navigation';
-import RSFormsPage from './pages/RSFormsPage';
-import RSFormPage from './pages/RSFormPage';
-import NotFoundPage from './pages/NotFoundPage';
+import ToasterThemed from './components/ToasterThemed';
 import HomePage from './pages/HomePage';
 import LoginPage from './pages/LoginPage';
-import RestorePasswordPage from './pages/RestorePasswordPage';
-import UserProfilePage from './pages/UserProfilePage';
-import RegisterPage from './pages/RegisterPage';
 import ManualsPage from './pages/ManualsPage';
-import Footer from './components/Footer';
+import NotFoundPage from './pages/NotFoundPage';
+import RegisterPage from './pages/RegisterPage';
+import RestorePasswordPage from './pages/RestorePasswordPage';
 import RSFormCreatePage from './pages/RSFormCreatePage';
-import ToasterThemed from './components/ToasterThemed';
+import RSFormPage from './pages/RSFormPage';
+import RSFormsPage from './pages/RSFormsPage';
+import UserProfilePage from './pages/UserProfilePage';
 
-function App() {
+function App () {
   return (
     <div className='antialiased clr-app'>
       <Navigation />
@@ -32,9 +32,9 @@ function App() {
           <Route path='signup' element={<RegisterPage/>} />
           <Route path='restore-password' element={ <RestorePasswordPage/>} />
           <Route path='profile' element={<UserProfilePage/>} />
-          
+
           <Route path='manuals' element={<ManualsPage/>} />
-          
+
           <Route path='rsforms' element={<RSFormsPage/>} />
           <Route path='rsforms/:id' element={ <RSFormPage/>} />
           <Route path='rsform-create' element={ <RSFormCreatePage/>} />
@@ -46,4 +46,4 @@ function App() {
   );
 }
 
-export default App;
\ No newline at end of file
+export default App;
diff --git a/rsconcept/frontend/src/components/BackendError.tsx b/rsconcept/frontend/src/components/BackendError.tsx
index 2dd66e88..2ceb9376 100644
--- a/rsconcept/frontend/src/components/BackendError.tsx
+++ b/rsconcept/frontend/src/components/BackendError.tsx
@@ -1,4 +1,5 @@
-import axios, { AxiosError } from 'axios';
+import axios, { type AxiosError } from 'axios';
+
 import PrettyJson from './Common/PrettyJSON';
 
 export type ErrorInfo = string | Error | AxiosError | undefined;
@@ -22,12 +23,12 @@ function DescribeError(error: ErrorInfo) {
   if (error.response.status === 404) {
     return (
       <div className='flex flex-col justify-start'>
-        <p>{`Обращение к несуществующему API`}</p>
+        <p>{'Обращение к несуществующему API'}</p>
         <PrettyJson data={error} />
       </div>
     );
   }
-  
+
   const isHtml = error.response.headers['content-type'].includes('text/html');
   return (
     <div className='flex flex-col justify-start'>
@@ -42,7 +43,7 @@ function DescribeError(error: ErrorInfo) {
   );
 }
 
-function BackendError({error}: BackendErrorProps) {
+function BackendError({ error }: BackendErrorProps) {
   return (
     <div className='py-2 text-sm font-semibold text-red-600 dark:text-red-400'>
       {DescribeError(error)}
@@ -50,4 +51,4 @@ function BackendError({error}: BackendErrorProps) {
   );
 }
 
-export default BackendError;
\ No newline at end of file
+export default BackendError;
diff --git a/rsconcept/frontend/src/components/Common/Button.tsx b/rsconcept/frontend/src/components/Common/Button.tsx
index 0308a4a6..4ef6f6bb 100644
--- a/rsconcept/frontend/src/components/Common/Button.tsx
+++ b/rsconcept/frontend/src/components/Common/Button.tsx
@@ -1,4 +1,4 @@
-import { MouseEventHandler } from 'react'
+import { type MouseEventHandler } from 'react';
 
 interface ButtonProps {
   id?: string
@@ -14,14 +14,15 @@ interface ButtonProps {
   onClick?: MouseEventHandler<HTMLButtonElement> | undefined
 }
 
-function Button({id, text, icon, tooltip,
+function Button({
+  id, text, icon, tooltip,
   dense, disabled,
-  borderClass='border rounded', colorClass='clr-btn-default', widthClass='w-fit h-fit',
+  borderClass = 'border rounded', colorClass = 'clr-btn-default', widthClass = 'w-fit h-fit',
   loading, onClick,
   ...props
 }: ButtonProps) {
-  const padding = dense ? 'px-1' : 'px-3 py-2'
-  const cursor = 'disabled:cursor-not-allowed ' + (loading ? 'cursor-progress ': 'cursor-pointer ')
+  const padding = dense ? 'px-1' : 'px-3 py-2';
+  const cursor = 'disabled:cursor-not-allowed ' + (loading ? 'cursor-progress ' : 'cursor-pointer ');
   return (
     <button id={id}
       type='button'
@@ -34,7 +35,7 @@ function Button({id, text, icon, tooltip,
       {icon && <span>{icon}</span>}
       {text && <span className={'font-semibold'}>{text}</span>}
     </button>
-  )
+  );
 }
 
-export default Button;
\ No newline at end of file
+export default Button;
diff --git a/rsconcept/frontend/src/components/Common/Card.tsx b/rsconcept/frontend/src/components/Common/Card.tsx
index d49be38b..0479e77e 100644
--- a/rsconcept/frontend/src/components/Common/Card.tsx
+++ b/rsconcept/frontend/src/components/Common/Card.tsx
@@ -4,7 +4,7 @@ interface CardProps {
   children: React.ReactNode
 }
 
-function Card({title, widthClass='min-w-fit', children}: CardProps) {
+function Card({ title, widthClass = 'min-w-fit', children }: CardProps) {
   return (
     <div className={`border shadow-md py-2 clr-card px-6 ${widthClass}`}>
       { title && <h1 className='mb-2 text-xl font-bold whitespace-nowrap'>{title}</h1> }
@@ -13,4 +13,4 @@ function Card({title, widthClass='min-w-fit', children}: CardProps) {
   );
 }
 
-export default Card;
\ No newline at end of file
+export default Card;
diff --git a/rsconcept/frontend/src/components/Common/Checkbox.tsx b/rsconcept/frontend/src/components/Common/Checkbox.tsx
index 66fc1940..3fda76c0 100644
--- a/rsconcept/frontend/src/components/Common/Checkbox.tsx
+++ b/rsconcept/frontend/src/components/Common/Checkbox.tsx
@@ -10,7 +10,7 @@ export interface CheckboxProps {
   onChange?: (event: React.ChangeEvent<HTMLInputElement>) => void
 }
 
-function Checkbox({id, required, disabled, label, widthClass='w-full', value, onChange}: CheckboxProps) {
+function Checkbox({ id, required, disabled, label, widthClass = 'w-full', value, onChange }: CheckboxProps) {
   return (
     <div className={'flex gap-2 [&:not(:first-child)]:mt-3 ' + widthClass}>
       <input id={id} type='checkbox'
@@ -20,7 +20,7 @@ function Checkbox({id, required, disabled, label, widthClass='w-full', value, on
         checked={value}
         onChange={onChange}
       />
-      { label && <Label 
+      { label && <Label
         text={label}
         required={required}
         htmlFor={id}
@@ -36,4 +36,4 @@ function Checkbox({id, required, disabled, label, widthClass='w-full', value, on
   );
 }
 
-export default Checkbox;
\ No newline at end of file
+export default Checkbox;
diff --git a/rsconcept/frontend/src/components/Common/ConceptTab.tsx b/rsconcept/frontend/src/components/Common/ConceptTab.tsx
index d6ac9cb2..d8a1b327 100644
--- a/rsconcept/frontend/src/components/Common/ConceptTab.tsx
+++ b/rsconcept/frontend/src/components/Common/ConceptTab.tsx
@@ -1,10 +1,10 @@
-import { Tab} from 'react-tabs';
 import type { TabProps } from 'react-tabs';
+import { Tab } from 'react-tabs';
 
-function ConceptTab({children, className, ...otherProps} : TabProps) {
+function ConceptTab({ children, className, ...otherProps }: TabProps) {
   return (
-  <Tab 
-    className={`px-2 py-1 text-sm hover:cursor-pointer clr-tab ${className} whitespace-nowrap`}
+  <Tab
+    className={`px-2 py-1 text-sm hover:cursor-pointer clr-tab ${className?.toString() ?? ''} whitespace-nowrap`}
     {...otherProps}
   >
     {children}
@@ -14,4 +14,4 @@ function ConceptTab({children, className, ...otherProps} : TabProps) {
 
 ConceptTab.tabsRole = 'Tab';
 
-export default ConceptTab;
\ No newline at end of file
+export default ConceptTab;
diff --git a/rsconcept/frontend/src/components/Common/DataTableThemed.tsx b/rsconcept/frontend/src/components/Common/DataTableThemed.tsx
index 3168c5e5..a6e43c85 100644
--- a/rsconcept/frontend/src/components/Common/DataTableThemed.tsx
+++ b/rsconcept/frontend/src/components/Common/DataTableThemed.tsx
@@ -1,48 +1,49 @@
-import DataTable, { createTheme, TableProps } from 'react-data-table-component';
+import DataTable, { createTheme, type TableProps } from 'react-data-table-component';
+
 import { useConceptTheme } from '../../context/ThemeContext';
 
 export interface SelectionInfo<T> {
-  allSelected: boolean;
-  selectedCount: number;
-  selectedRows: T[];
+  allSelected: boolean
+  selectedCount: number
+  selectedRows: T[]
 }
 
 createTheme('customDark', {
   text: {
     primary: 'rgba(228, 228, 231, 1)',
     secondary: 'rgba(228, 228, 231, 0.87)',
-    disabled: 'rgba(228, 228, 231, 0.54)',
+    disabled: 'rgba(228, 228, 231, 0.54)'
   },
   background: {
-    default: '#002b36',
+    default: '#002b36'
   },
   context: {
     background: '#3e014d',
-    text: 'rgba(228, 228, 231, 0.87)',
+    text: 'rgba(228, 228, 231, 0.87)'
   },
   highlightOnHover: {
     default: '#3e014d',
-		text: 'rgba(228, 228, 231, 1)',
+    text: 'rgba(228, 228, 231, 1)'
   },
   divider: {
-    default: '#6b6b6b',
+    default: '#6b6b6b'
   },
   striped: {
-		default: '#004859',
-		text: 'rgba(228, 228, 231, 1)',
-	},
+    default: '#004859',
+    text: 'rgba(228, 228, 231, 1)'
+  },
   selected: {
-		default: '#4b015c',
-		text: 'rgba(228, 228, 231, 1)',
-	},
+    default: '#4b015c',
+    text: 'rgba(228, 228, 231, 1)'
+  }
 }, 'dark');
 
-function DataTableThemed<T>({theme, ...props}: TableProps<T>) {
+function DataTableThemed<T>({ theme, ...props }: TableProps<T>) {
   const { darkMode } = useConceptTheme();
 
   return (
     <DataTable<T>
-      theme={ theme ? theme : darkMode ? 'customDark' : ''}
+      theme={ theme ?? (darkMode ? 'customDark' : '')}
       {...props}
     />
   );
diff --git a/rsconcept/frontend/src/components/Common/Divider.tsx b/rsconcept/frontend/src/components/Common/Divider.tsx
index 2f4f1a45..3845bd9d 100644
--- a/rsconcept/frontend/src/components/Common/Divider.tsx
+++ b/rsconcept/frontend/src/components/Common/Divider.tsx
@@ -3,7 +3,7 @@ interface DividerProps {
   margins?: string
 }
 
-function Divider({vertical, margins='2'}: DividerProps) {
+function Divider({ vertical, margins = '2' }: DividerProps) {
   return (
     <>
     {vertical && <div className={`mx-${margins} border-x-2`} />}
@@ -12,4 +12,4 @@ function Divider({vertical, margins='2'}: DividerProps) {
   );
 }
 
-export default Divider;
\ No newline at end of file
+export default Divider;
diff --git a/rsconcept/frontend/src/components/Common/Dropdown.tsx b/rsconcept/frontend/src/components/Common/Dropdown.tsx
index 05990bb6..2646822a 100644
--- a/rsconcept/frontend/src/components/Common/Dropdown.tsx
+++ b/rsconcept/frontend/src/components/Common/Dropdown.tsx
@@ -4,14 +4,14 @@ interface DropdownProps {
   widthClass?: string
 }
 
-function Dropdown({children, widthClass='w-fit', stretchLeft}: DropdownProps) {
+function Dropdown({ children, widthClass = 'w-fit', stretchLeft }: DropdownProps) {
   return (
     <div className='relative'>
-    <div className={`absolute ${stretchLeft ? 'right-0': 'left-0'} py-2 z-10 flex flex-col items-stretch justify-start px-2 mt-2 text-sm origin-top-right bg-white border border-gray-100 divide-y rounded-md shadow-lg dark:border-gray-500 dark:bg-gray-900 ${widthClass}`}>
+    <div className={`absolute ${stretchLeft ? 'right-0' : 'left-0'} py-2 z-10 flex flex-col items-stretch justify-start px-2 mt-2 text-sm origin-top-right bg-white border border-gray-100 divide-y rounded-md shadow-lg dark:border-gray-500 dark:bg-gray-900 ${widthClass}`}>
       {children}
     </div>
     </div>
   );
 }
 
-export default Dropdown;
\ No newline at end of file
+export default Dropdown;
diff --git a/rsconcept/frontend/src/components/Common/DropdownButton.tsx b/rsconcept/frontend/src/components/Common/DropdownButton.tsx
index d5578e27..d3ac47de 100644
--- a/rsconcept/frontend/src/components/Common/DropdownButton.tsx
+++ b/rsconcept/frontend/src/components/Common/DropdownButton.tsx
@@ -5,10 +5,10 @@ interface NavigationTextItemProps {
   children: React.ReactNode
 }
 
-function DropdownButton({description='', onClick, disabled, children}: NavigationTextItemProps) {
-  const behavior = (onClick ? 'cursor-pointer clr-hover': 'cursor-default') + ' disabled:cursor-not-allowed';
+function DropdownButton({ description = '', onClick, disabled, children }: NavigationTextItemProps) {
+  const behavior = (onClick ? 'cursor-pointer clr-hover' : 'cursor-default') + ' disabled:cursor-not-allowed';
   return (
-    <button 
+    <button
       disabled={disabled}
       title={description}
       onClick={onClick}
@@ -19,4 +19,4 @@ function DropdownButton({description='', onClick, disabled, children}: Navigatio
   );
 }
 
-export default DropdownButton;
\ No newline at end of file
+export default DropdownButton;
diff --git a/rsconcept/frontend/src/components/Common/FileInput.tsx b/rsconcept/frontend/src/components/Common/FileInput.tsx
index a4a115e3..f2f07486 100644
--- a/rsconcept/frontend/src/components/Common/FileInput.tsx
+++ b/rsconcept/frontend/src/components/Common/FileInput.tsx
@@ -1,4 +1,5 @@
 import { useRef, useState } from 'react';
+
 import { UploadIcon } from '../Icons';
 import Button from './Button';
 import Label from './Label';
@@ -12,16 +13,16 @@ interface FileInputProps {
   onChange?: (event: React.ChangeEvent<HTMLInputElement>) => void
 }
 
-function FileInput({id, required, label, acceptType, widthClass='w-full', onChange}: FileInputProps) {
+function FileInput({ id, required, label, acceptType, widthClass = 'w-full', onChange }: FileInputProps) {
   const inputRef = useRef<HTMLInputElement | null>(null);
   const [labelText, setLabelText] = useState('Файл не выбран');
-  
+
   const handleUploadClick = () => {
     inputRef.current?.click();
   };
 
   const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
-    if(event.target.files && event.target.files.length > 0) {
+    if (event.target.files && event.target.files.length > 0) {
       setLabelText(event.target.files[0].name)
     } else {
       setLabelText('Файл не выбран')
@@ -30,9 +31,9 @@ function FileInput({id, required, label, acceptType, widthClass='w-full', onChan
       onChange(event);
     }
   };
-  
+
   return (
-    <div className={'flex gap-2 py-2 mt-3 items-center '+ widthClass}>
+    <div className={'flex gap-2 py-2 mt-3 items-center ' + widthClass}>
       <input id={id} type='file'
         ref={inputRef}
         required={required}
@@ -40,16 +41,16 @@ function FileInput({id, required, label, acceptType, widthClass='w-full', onChan
         accept={acceptType}
         onChange={handleFileChange}
       />
-      <Button 
+      <Button
         text={label}
         icon={<UploadIcon/>}
         onClick={handleUploadClick}
       />
-      <Label 
+      <Label
         text={labelText}
       />
     </div>
   );
 }
 
-export default FileInput;
\ No newline at end of file
+export default FileInput;
diff --git a/rsconcept/frontend/src/components/Common/Form.tsx b/rsconcept/frontend/src/components/Common/Form.tsx
index 9083cce6..81e3001f 100644
--- a/rsconcept/frontend/src/components/Common/Form.tsx
+++ b/rsconcept/frontend/src/components/Common/Form.tsx
@@ -7,7 +7,7 @@ interface FormProps {
   children: React.ReactNode
 }
 
-function Form({title, onSubmit, widthClass='max-w-xs', children}: FormProps) {
+function Form({ title, onSubmit, widthClass = 'max-w-xs', children }: FormProps) {
   return (
     <div className='flex flex-col items-center w-full'>
       <Card title={title} widthClass={widthClass}>
@@ -19,4 +19,4 @@ function Form({title, onSubmit, widthClass='max-w-xs', children}: FormProps) {
   );
 }
 
-export default Form;
\ No newline at end of file
+export default Form;
diff --git a/rsconcept/frontend/src/components/Common/Label.tsx b/rsconcept/frontend/src/components/Common/Label.tsx
index d9f83e1a..e8335573 100644
--- a/rsconcept/frontend/src/components/Common/Label.tsx
+++ b/rsconcept/frontend/src/components/Common/Label.tsx
@@ -5,9 +5,9 @@ interface LabelProps {
   title?: string
 }
 
-function Label({text, htmlFor, required=false, title}: LabelProps) {
+function Label({ text, htmlFor, required = false, title }: LabelProps) {
   return (
-    <label 
+    <label
       className='text-sm font-semibold'
       htmlFor={htmlFor}
       title={ (required && !title) ? 'обязательное поле' : title }
@@ -17,4 +17,4 @@ function Label({text, htmlFor, required=false, title}: LabelProps) {
   );
 }
 
-export default Label;
\ No newline at end of file
+export default Label;
diff --git a/rsconcept/frontend/src/components/Common/LabeledText.tsx b/rsconcept/frontend/src/components/Common/LabeledText.tsx
index 158ca874..593dfe84 100644
--- a/rsconcept/frontend/src/components/Common/LabeledText.tsx
+++ b/rsconcept/frontend/src/components/Common/LabeledText.tsx
@@ -5,17 +5,17 @@ interface LabeledTextProps {
   tooltip?: string
 }
 
-function LabeledText({id, label, text, tooltip}: LabeledTextProps) {
+function LabeledText({ id, label, text, tooltip }: LabeledTextProps) {
   return (
     <div className='flex justify-between gap-4'>
-      <label 
+      <label
         className='font-semibold'
         title={tooltip}
         htmlFor={id}
       >
         {label}
       </label>
-      <span 
+      <span
         id={id}
       >
         {text}
@@ -24,4 +24,4 @@ function LabeledText({id, label, text, tooltip}: LabeledTextProps) {
   );
 }
 
-export default LabeledText;
\ No newline at end of file
+export default LabeledText;
diff --git a/rsconcept/frontend/src/components/Common/Loader.tsx b/rsconcept/frontend/src/components/Common/Loader.tsx
index 0ba9f97d..e43c1c0b 100644
--- a/rsconcept/frontend/src/components/Common/Loader.tsx
+++ b/rsconcept/frontend/src/components/Common/Loader.tsx
@@ -1,4 +1,4 @@
-import { ThreeDots } from 'react-loader-spinner'
+import { ThreeDots } from 'react-loader-spinner';
 
 export function Loader() {
   return (
diff --git a/rsconcept/frontend/src/components/Common/Modal.tsx b/rsconcept/frontend/src/components/Common/Modal.tsx
index 300cc7e7..796f1046 100644
--- a/rsconcept/frontend/src/components/Common/Modal.tsx
+++ b/rsconcept/frontend/src/components/Common/Modal.tsx
@@ -1,6 +1,7 @@
-import { useRef } from 'react'
-import Button from './Button'
-import useClickedOutside from '../../hooks/useClickedOutside'
+import { useRef } from 'react';
+
+import useClickedOutside from '../../hooks/useClickedOutside';
+import Button from './Button';
 
 interface ModalProps {
   title?: string
@@ -13,9 +14,9 @@ interface ModalProps {
   children: React.ReactNode
 }
 
-function Modal({title, show, toggle, onSubmit, onCancel, canSubmit, children, submitText='Продолжить'}: ModalProps) {
+function Modal({ title, show, toggle, onSubmit, onCancel, canSubmit, children, submitText = 'Продолжить' }: ModalProps) {
   const ref = useRef(null);
-  useClickedOutside({ref: ref, callback: toggle})
+  useClickedOutside({ ref, callback: toggle })
 
   if (!show) {
     return null;
@@ -23,7 +24,7 @@ function Modal({title, show, toggle, onSubmit, onCancel, canSubmit, children, su
 
   const handleCancel = () => {
     toggle();
-    if(onCancel) onCancel();
+    if (onCancel) onCancel();
   };
 
   const handleSubmit = () => {
@@ -33,14 +34,14 @@ function Modal({title, show, toggle, onSubmit, onCancel, canSubmit, children, su
 
   return (
     <>
-    <div className='fixed top-0 left-0 w-full h-full clr-modal opacity-50 z-50'>
+    <div className='fixed top-0 left-0 z-50 w-full h-full opacity-50 clr-modal'>
     </div>
     <div ref={ref} className='fixed bottom-1/2 left-1/2 -translate-y-1/2 -translate-x-1/2 px-6 py-4 flex flex-col w-fit z-[60] clr-card border shadow-md'>
       { title && <h1 className='mb-4 text-xl font-bold'>{title}</h1> }
       <div className='py-2'>
         {children}
       </div>
-      <div className='pt-4 mt-2 border-t-4 flex justify-between w-full'>
+      <div className='flex justify-between w-full pt-4 mt-2 border-t-4'>
         <Button
           text={submitText}
           widthClass='min-w-[6rem] w-fit h-fit'
@@ -48,7 +49,7 @@ function Modal({title, show, toggle, onSubmit, onCancel, canSubmit, children, su
           disabled={!canSubmit}
           onClick={handleSubmit}
         />
-        <Button 
+        <Button
           text='Отмена'
           onClick={handleCancel}
         />
@@ -58,4 +59,4 @@ function Modal({title, show, toggle, onSubmit, onCancel, canSubmit, children, su
   );
 }
 
-export default Modal;
\ No newline at end of file
+export default Modal;
diff --git a/rsconcept/frontend/src/components/Common/PrettyJSON.tsx b/rsconcept/frontend/src/components/Common/PrettyJSON.tsx
index 0a4534c9..b40d89d7 100644
--- a/rsconcept/frontend/src/components/Common/PrettyJSON.tsx
+++ b/rsconcept/frontend/src/components/Common/PrettyJSON.tsx
@@ -1,9 +1,9 @@
 interface PrettyJsonProps {
-  data: Object
+  data: any
 }
 
-function PrettyJson({data}: PrettyJsonProps) {
+function PrettyJson({ data }: PrettyJsonProps) {
   return (<pre>{JSON.stringify(data, null, 2)}</pre>);
 }
 
-export default PrettyJson;
\ No newline at end of file
+export default PrettyJson;
diff --git a/rsconcept/frontend/src/components/Common/SubmitButton.tsx b/rsconcept/frontend/src/components/Common/SubmitButton.tsx
index 689b2cf3..3af5910c 100644
--- a/rsconcept/frontend/src/components/Common/SubmitButton.tsx
+++ b/rsconcept/frontend/src/components/Common/SubmitButton.tsx
@@ -5,10 +5,10 @@ interface SubmitButtonProps {
   icon?: React.ReactNode
 }
 
-function SubmitButton({text='ОК', icon, disabled, loading=false}: SubmitButtonProps) {
+function SubmitButton({ text = 'ОК', icon, disabled, loading = false }: SubmitButtonProps) {
   return (
     <button type='submit'
-      className={`px-4 py-2 inline-flex items-center gap-2 align-middle justify-center font-bold disabled:cursor-not-allowed rounded clr-btn-primary ${loading ? ' cursor-progress': ''}`}
+      className={`px-4 py-2 inline-flex items-center gap-2 align-middle justify-center font-bold disabled:cursor-not-allowed rounded clr-btn-primary ${loading ? ' cursor-progress' : ''}`}
       disabled={disabled}
     >
       {icon && <span>{icon}</span>}
@@ -17,4 +17,4 @@ function SubmitButton({text='ОК', icon, disabled, loading=false}: SubmitButton
   )
 }
 
-export default SubmitButton;
\ No newline at end of file
+export default SubmitButton;
diff --git a/rsconcept/frontend/src/components/Common/TextArea.tsx b/rsconcept/frontend/src/components/Common/TextArea.tsx
index 47913b15..e4887f82 100644
--- a/rsconcept/frontend/src/components/Common/TextArea.tsx
+++ b/rsconcept/frontend/src/components/Common/TextArea.tsx
@@ -16,19 +16,19 @@ interface TextAreaProps {
 
 function TextArea({
   id, label, placeholder,
-  required, spellCheck, disabled, 
-  widthClass='w-full', rows=4, value,
+  required, spellCheck, disabled,
+  widthClass = 'w-full', rows = 4, value,
   onChange, onFocus
 }: TextAreaProps) {
   return (
     <div className='flex flex-col items-start [&:not(:first-child)]:mt-3'>
-      <Label 
+      <Label
         text={label}
         required={required}
         htmlFor={id}
       />
       <textarea id={id}
-          className={'px-3 py-2 mt-2 leading-tight border shadow dark:bg-gray-800 '+ widthClass}
+          className={'px-3 py-2 mt-2 leading-tight border shadow dark:bg-gray-800 ' + widthClass}
           rows={rows}
           placeholder={placeholder}
           required={required}
@@ -42,4 +42,4 @@ function TextArea({
   );
 }
 
-export default TextArea;
\ No newline at end of file
+export default TextArea;
diff --git a/rsconcept/frontend/src/components/Common/TextInput.tsx b/rsconcept/frontend/src/components/Common/TextInput.tsx
index f890d9ff..546ffa28 100644
--- a/rsconcept/frontend/src/components/Common/TextInput.tsx
+++ b/rsconcept/frontend/src/components/Common/TextInput.tsx
@@ -1,26 +1,27 @@
-import { InputHTMLAttributes } from 'react';
+import { type InputHTMLAttributes } from 'react';
+
 import Label from './Label';
 
-interface TextInputProps 
-extends Omit<InputHTMLAttributes<HTMLInputElement>, 'className'> {
+interface TextInputProps
+  extends Omit<InputHTMLAttributes<HTMLInputElement>, 'className'> {
   id: string
   label: string
   widthClass?: string
 }
 
 function TextInput({
-  id, required, label, widthClass='w-full', 
+  id, required, label, widthClass = 'w-full',
   ...props
 }: TextInputProps) {
   return (
     <div className='flex flex-col items-start [&:not(:first-child)]:mt-3'>
-      <Label 
+      <Label
         text={label}
         required={required}
         htmlFor={id}
       />
       <input id={id}
-        className={'px-3 py-2 mt-2 leading-tight border shadow dark:bg-gray-800 truncate hover:text-clip '+ widthClass}
+        className={'px-3 py-2 mt-2 leading-tight border shadow dark:bg-gray-800 truncate hover:text-clip ' + widthClass}
         required={required}
         {...props}
       />
@@ -28,4 +29,4 @@ function TextInput({
   );
 }
 
-export default TextInput;
\ No newline at end of file
+export default TextInput;
diff --git a/rsconcept/frontend/src/components/Common/TextURL.tsx b/rsconcept/frontend/src/components/Common/TextURL.tsx
index a4a94251..f3edbb2f 100644
--- a/rsconcept/frontend/src/components/Common/TextURL.tsx
+++ b/rsconcept/frontend/src/components/Common/TextURL.tsx
@@ -5,7 +5,7 @@ interface TextURLProps {
   href: string
 }
 
-function TextURL({text, href}: TextURLProps) {
+function TextURL({ text, href }: TextURLProps) {
   return (
     <Link className='text-sm font-bold text-blue-400 dark:text-orange-600 dark:hover:text-orange-400 hover:underline hover:text-blue-600' to={href}>
       {text}
@@ -13,4 +13,4 @@ function TextURL({text, href}: TextURLProps) {
   );
 }
 
-export default TextURL;
\ No newline at end of file
+export default TextURL;
diff --git a/rsconcept/frontend/src/components/ErrorFallback.tsx b/rsconcept/frontend/src/components/ErrorFallback.tsx
index a39e5e98..f2571218 100644
--- a/rsconcept/frontend/src/components/ErrorFallback.tsx
+++ b/rsconcept/frontend/src/components/ErrorFallback.tsx
@@ -1,4 +1,5 @@
-import { FallbackProps } from 'react-error-boundary';
+import { type FallbackProps } from 'react-error-boundary';
+
 import Button from './Common/Button';
 
 function ErrorFallback({ error, resetErrorBoundary }: FallbackProps) {
@@ -11,4 +12,4 @@ function ErrorFallback({ error, resetErrorBoundary }: FallbackProps) {
   );
 }
 
-export default ErrorFallback;
\ No newline at end of file
+export default ErrorFallback;
diff --git a/rsconcept/frontend/src/components/Footer.tsx b/rsconcept/frontend/src/components/Footer.tsx
index 0822c53c..538686ae 100644
--- a/rsconcept/frontend/src/components/Footer.tsx
+++ b/rsconcept/frontend/src/components/Footer.tsx
@@ -1,9 +1,10 @@
 import { Link } from 'react-router-dom';
+
 import { urls } from '../utils/constants';
 
 function Footer() {
   return (
-    <footer className='z-50 px-4 pt-2 pb-4 t border-t-2 clr-footer'>
+    <footer className='z-50 px-4 pt-2 pb-4 border-t-2 t clr-footer'>
       <div className='flex items-stretch justify-center w-full mx-auto'>
         <div className='px-4 underline'>
           <Link to='manuals' tabIndex={-1}>Справка</Link> <br/>
diff --git a/rsconcept/frontend/src/components/Icons.tsx b/rsconcept/frontend/src/components/Icons.tsx
index 70efa8bf..6bc47a94 100644
--- a/rsconcept/frontend/src/components/Icons.tsx
+++ b/rsconcept/frontend/src/components/Icons.tsx
@@ -13,13 +13,13 @@ export interface IconProps {
   color?: string
 }
 
-function IconSVG({viewbox, size=6, color, props, children} : IconSVGProps) {
-  const width = `${size*1/4}rem`
+function IconSVG({ viewbox, size = 6, color, props, children }: IconSVGProps) {
+  const width = `${size * 1 / 4}rem`
   return (
     <svg
       width={width}
       height={width}
-      className={`w-[${width}] h-[${width}] ${color}`}
+      className={`w-[${width}] h-[${width}] ${color ?? ''}`}
       fill='currentColor'
       viewBox={viewbox}
       {...props}
@@ -29,17 +29,17 @@ function IconSVG({viewbox, size=6, color, props, children} : IconSVGProps) {
   );
 }
 
-export function MagnifyingGlassIcon({size, ...props}: IconProps) {
+export function MagnifyingGlassIcon({ size, ...props }: IconProps) {
   return (
-      <IconSVG viewbox='0 0 20 20' size={size || 5} {...props} >
+      <IconSVG viewbox='0 0 20 20' size={size ?? 5} {...props} >
         <path d='M8 4a4 4 0 100 8 4 4 0 000-8zM2 8a6 6 0 1110.89 3.476l4.817 4.817a1 1 0 01-1.414 1.414l-4.816-4.816A6 6 0 012 8z'/>
       </IconSVG>
-    );
+  );
 }
 
 export function BellIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M10 2a6 6 0 00-6 6v3.586l-.707.707A1 1 0 004 14h12a1 1 0 00.707-1.707L16 11.586V8a6 6 0 00-6-6zM10 18a3 3 0 01-3-3h6a3 3 0 01-3 3z' />
     </IconSVG>
   );
@@ -47,7 +47,7 @@ export function BellIcon(props: IconProps) {
 
 export function EyeIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 1024 1024' {...props}> 
+    <IconSVG viewbox='0 0 1024 1024' {...props}>
       <path d='M942.2 486.2C847.4 286.5 704.1 186 512 186c-192.2 0-335.4 100.5-430.2 300.3a60.3 60.3 0 000 51.5C176.6 737.5 319.9 838 512 838c192.2 0 335.4-100.5 430.2-300.3 7.7-16.2 7.7-35 0-51.5zM512 766c-161.3 0-279.4-81.8-362.7-254C232.6 339.8 350.7 258 512 258c161.3 0 279.4 81.8 362.7 254C791.5 684.2 673.4 766 512 766zm-4-430c-97.2 0-176 78.8-176 176s78.8 176 176 176 176-78.8 176-176-78.8-176-176-176zm0 288c-61.9 0-112-50.1-112-112s50.1-112 112-112 112 50.1 112 112-50.1 112-112 112z' />
     </IconSVG>
   );
@@ -64,7 +64,7 @@ export function EyeOffIcon(props: IconProps) {
 
 export function PenIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='-3 -3 21 21' {...props}> 
+    <IconSVG viewbox='-3 -3 21 21' {...props}>
       <path d='M15.502 1.94a.5.5 0 010 .706L14.459 3.69l-2-2L13.502.646a.5.5 0 01.707 0l1.293 1.293zm-1.75 2.456l-2-2L4.939 9.21a.5.5 0 00-.121.196l-.805 2.414a.25.25 0 00.316.316l2.414-.805a.5.5 0 00.196-.12l6.813-6.814z' />
       <path d='M1 13.5A1.5 1.5 0 002.5 15h11a1.5 1.5 0 001.5-1.5v-6a.5.5 0 00-1 0v6a.5.5 0 01-.5.5h-11a.5.5 0 01-.5-.5v-11a.5.5 0 01.5-.5H9a.5.5 0 000-1H2.5A1.5 1.5 0 001 2.5v11z' />
     </IconSVG>
@@ -73,7 +73,7 @@ export function PenIcon(props: IconProps) {
 
 export function SquaresIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M5 3a2 2 0 00-2 2v2a2 2 0 002 2h2a2 2 0 002-2V5a2 2 0 00-2-2H5zM5 11a2 2 0 00-2 2v2a2 2 0 002 2h2a2 2 0 002-2v-2a2 2 0 00-2-2H5zM11 5a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2V5zM11 13a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2v-2z' />
     </IconSVG>
   );
@@ -81,7 +81,7 @@ export function SquaresIcon(props: IconProps) {
 
 export function GroupIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M13 6a3 3 0 11-6 0 3 3 0 016 0zM18 8a2 2 0 11-4 0 2 2 0 014 0zM14 15a4 4 0 00-8 0v3h8v-3zM6 8a2 2 0 11-4 0 2 2 0 014 0zM16 18v-3a5.972 5.972 0 00-.75-2.906A3.005 3.005 0 0119 15v3h-3zM4.75 12.094A5.973 5.973 0 004 15v3H1v-3a3 3 0 013.75-2.906z' />
     </IconSVG>
   );
@@ -89,7 +89,7 @@ export function GroupIcon(props: IconProps) {
 
 export function FrameIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M5 3a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2V5a2 2 0 00-2-2H5zm0 2h10v7h-2l-1 2H8l-1-2H5V5z' />
     </IconSVG>
   );
@@ -97,7 +97,7 @@ export function FrameIcon(props: IconProps) {
 
 export function AsteriskIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M11.49 3.17c-.38-1.56-2.6-1.56-2.98 0a1.532 1.532 0 01-2.286.948c-1.372-.836-2.942.734-2.106 2.106.54.886.061 2.042-.947 2.287-1.561.379-1.561 2.6 0 2.978a1.532 1.532 0 01.947 2.287c-.836 1.372.734 2.942 2.106 2.106a1.532 1.532 0 012.287.947c.379 1.561 2.6 1.561 2.978 0a1.533 1.533 0 012.287-.947c1.372.836 2.942-.734 2.106-2.106a1.533 1.533 0 01.947-2.287c1.561-.379 1.561-2.6 0-2.978a1.532 1.532 0 01-.947-2.287c.836-1.372-.734-2.942-2.106-2.106a1.532 1.532 0 01-2.287-.947zM10 13a3 3 0 100-6 3 3 0 000 6z' />
     </IconSVG>
   );
@@ -105,7 +105,7 @@ export function AsteriskIcon(props: IconProps) {
 
 export function MenuIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M4 6h16v2H4zm0 5h16v2H4zm0 5h16v2H4z' />
     </IconSVG>
   );
@@ -113,7 +113,7 @@ export function MenuIcon(props: IconProps) {
 
 export function ShareIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M5.5 15a3.51 3.51 0 002.36-.93l6.26 3.58a3.06 3.06 0 00-.12.85 3.53 3.53 0 101.14-2.57l-6.26-3.58a2.74 2.74 0 00.12-.76l6.15-3.52A3.49 3.49 0 1014 5.5a3.35 3.35 0 00.12.85L8.43 9.6A3.5 3.5 0 105.5 15zm12 2a1.5 1.5 0 11-1.5 1.5 1.5 1.5 0 011.5-1.5zm0-13A1.5 1.5 0 1116 5.5 1.5 1.5 0 0117.5 4zm-12 6A1.5 1.5 0 114 11.5 1.5 1.5 0 015.5 10z' />
     </IconSVG>
   );
@@ -121,7 +121,7 @@ export function ShareIcon(props: IconProps) {
 
 export function FilterCogIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M22.77 19.32l-1.07-.82c.02-.17.04-.33.04-.5s-.01-.33-.04-.5l1.06-.82a.26.26 0 00.06-.32l-1-1.73c-.06-.13-.19-.13-.32-.13l-1.23.5c-.27-.18-.54-.35-.85-.47l-.19-1.32A.236.236 0 0019 13h-2a.26.26 0 00-.26.21l-.19 1.32c-.3.13-.59.29-.85.47l-1.24-.5c-.11 0-.24 0-.31.13l-1 1.73c-.06.11-.04.24.06.32l1.06.82a4.193 4.193 0 000 1l-1.06.82a.26.26 0 00-.06.32l1 1.73c.06.13.19.13.31.13l1.24-.5c.26.18.54.35.85.47l.19 1.32c.02.12.12.21.26.21h2c.11 0 .22-.09.24-.21l.19-1.32c.3-.13.57-.29.84-.47l1.23.5c.13 0 .26 0 .33-.13l1-1.73a.26.26 0 00-.06-.32M18 19.5c-.84 0-1.5-.67-1.5-1.5s.67-1.5 1.5-1.5 1.5.67 1.5 1.5-.67 1.5-1.5 1.5M3 3c-.22 0-.43.08-.62.22a1 1 0 00-.17 1.4L7.97 12H8v5.87c-.04.29.06.6.29.83l2.01 2.01c.35.35.89.37 1.28.09-.38-.89-.58-1.84-.58-2.8 0-1.27.35-2.5 1-3.6V12h.03l5.76-7.38a1 1 0 00-.17-1.4c-.19-.14-.4-.22-.62-.22H3z' />
     </IconSVG>
   );
@@ -129,7 +129,7 @@ export function FilterCogIcon(props: IconProps) {
 
 export function FilterIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M22 3H2l8 9.46V19l4 2v-8.54L22 3z' />
     </IconSVG>
   );
@@ -137,7 +137,7 @@ export function FilterIcon(props: IconProps) {
 
 export function SortIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M8 16H4l6 6V2H8zm6-11v17h2V8h4l-6-6z' />
     </IconSVG>
   );
@@ -145,7 +145,7 @@ export function SortIcon(props: IconProps) {
 
 export function BookmarkIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M5 2a2 2 0 00-2 2v14l3.5-2 3.5 2 3.5-2 3.5 2V4a2 2 0 00-2-2H5zm2.5 3a1.5 1.5 0 100 3 1.5 1.5 0 000-3zm6.207.293a1 1 0 00-1.414 0l-6 6a1 1 0 101.414 1.414l6-6a1 1 0 000-1.414zM12.5 10a1.5 1.5 0 100 3 1.5 1.5 0 000-3z' />
     </IconSVG>
   );
@@ -153,7 +153,7 @@ export function BookmarkIcon(props: IconProps) {
 
 export function UserIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 512 512' {...props}> 
+    <IconSVG viewbox='0 0 512 512' {...props}>
       <path d='M399 384.2c-22.1-38.4-63.6-64.2-111-64.2h-64c-47.4 0-88.9 25.8-111 64.2 35.2 39.2 86.2 63.8 143 63.8s107.8-24.7 143-63.8zM512 256c0 141.4-114.6 256-256 256S0 397.4 0 256 114.6 0 256 0s256 114.6 256 256zm-256 16c39.8 0 72-32.2 72-72s-32.2-72-72-72-72 32.2-72 72 32.2 72 72 72z' />
     </IconSVG>
   );
@@ -161,7 +161,7 @@ export function UserIcon(props: IconProps) {
 
 export function EducationIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M3.33 8L10 12l10-6-10-6L0 6h10v2H3.33zM0 8v8l2-2.22V9.2L0 8zm10 12l-5-3-2-1.2v-6l7 4.2 7-4.2v6L10 20z' />
     </IconSVG>
   );
@@ -169,7 +169,7 @@ export function EducationIcon(props: IconProps) {
 
 export function DarkThemeIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M17.293 13.293A8 8 0 016.707 2.707a8.001 8.001 0 1010.586 10.586z' />
     </IconSVG>
   );
@@ -177,7 +177,7 @@ export function DarkThemeIcon(props: IconProps) {
 
 export function LightThemeIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 20 20' {...props}> 
+    <IconSVG viewbox='0 0 20 20' {...props}>
       <path d='M10 2a1 1 0 011 1v1a1 1 0 11-2 0V3a1 1 0 011-1zm4 8a4 4 0 11-8 0 4 4 0 018 0zm-.464 4.95l.707.707a1 1 0 001.414-1.414l-.707-.707a1 1 0 00-1.414 1.414zm2.12-10.607a1 1 0 010 1.414l-.706.707a1 1 0 11-1.414-1.414l.707-.707a1 1 0 011.414 0zM17 11a1 1 0 100-2h-1a1 1 0 100 2h1zm-7 4a1 1 0 011 1v1a1 1 0 11-2 0v-1a1 1 0 011-1zM5.05 6.464A1 1 0 106.465 5.05l-.708-.707a1 1 0 00-1.414 1.414l.707.707zm1.414 8.486l-.707.707a1 1 0 01-1.414-1.414l.707-.707a1 1 0 011.414 1.414zM4 11a1 1 0 100-2H3a1 1 0 000 2h1z' />
     </IconSVG>
   );
@@ -185,7 +185,7 @@ export function LightThemeIcon(props: IconProps) {
 
 export function LibraryIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 512 512' {...props}> 
+    <IconSVG viewbox='0 0 512 512' {...props}>
       <path d='M64 480H48a32 32 0 01-32-32V112a32 32 0 0132-32h16a32 32 0 0132 32v336a32 32 0 01-32 32zM240 176a32 32 0 00-32-32h-64a32 32 0 00-32 32v28a4 4 0 004 4h120a4 4 0 004-4zM112 448a32 32 0 0032 32h64a32 32 0 0032-32v-30a2 2 0 00-2-2H114a2 2 0 00-2 2z' />
       <path d='M114 240 H238 A2 2 0 0 1 240 242 V382 A2 2 0 0 1 238 384 H114 A2 2 0 0 1 112 382 V242 A2 2 0 0 1 114 240 z' />
       <path d='M320 480h-32a32 32 0 01-32-32V64a32 32 0 0132-32h32a32 32 0 0132 32v384a32 32 0 01-32 32zM495.89 445.45l-32.23-340c-1.48-15.65-16.94-27-34.53-25.31l-31.85 3c-17.59 1.67-30.65 15.71-29.17 31.36l32.23 340c1.48 15.65 16.94 27 34.53 25.31l31.85-3c17.59-1.67 30.65-15.71 29.17-31.36z' />
@@ -195,7 +195,7 @@ export function LibraryIcon(props: IconProps) {
 
 export function PlusIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 1024 1024' {...props}> 
+    <IconSVG viewbox='0 0 1024 1024' {...props}>
       <path d='M880 112H144c-17.7 0-32 14.3-32 32v736c0 17.7 14.3 32 32 32h736c17.7 0 32-14.3 32-32V144c0-17.7-14.3-32-32-32zM704 536c0 4.4-3.6 8-8 8H544v152c0 4.4-3.6 8-8 8h-48c-4.4 0-8-3.6-8-8V544H328c-4.4 0-8-3.6-8-8v-48c0-4.4 3.6-8 8-8h152V328c0-4.4 3.6-8 8-8h48c4.4 0 8 3.6 8 8v152h152c4.4 0 8 3.6 8 8v48z' />
     </IconSVG>
   );
@@ -203,7 +203,7 @@ export function PlusIcon(props: IconProps) {
 
 export function SmallPlusIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M2 12C2 6.477 6.477 2 12 2s10 4.477 10 10-4.477 10-10 10S2 17.523 2 12zm10-8a8 8 0 100 16 8 8 0 000-16z'/>
       <path d='M13 7a1 1 0 10-2 0v4H7a1 1 0 100 2h4v4a1 1 0 102 0v-4h4a1 1 0 100-2h-4V7z'/>
     </IconSVG>
@@ -212,7 +212,7 @@ export function SmallPlusIcon(props: IconProps) {
 
 export function UploadIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M11 15h2V9h3l-4-5-4 5h3z'/>
       <path d='M20 18H4v-7H2v7c0 1.103.897 2 2 2h16c1.103 0 2-.897 2-2v-7h-2v7z'/>
     </IconSVG>
@@ -221,7 +221,7 @@ export function UploadIcon(props: IconProps) {
 
 export function DownloadIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M12 16l4-5h-3V4h-2v7H8z'/>
       <path d='M20 18H4v-7H2v7c0 1.103.897 2 2 2h16c1.103 0 2-.897 2-2v-7h-2v7z'/>
     </IconSVG>
@@ -230,7 +230,7 @@ export function DownloadIcon(props: IconProps) {
 
 export function CrownIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M5 16L3 5l5.5 5L12 4l3.5 6L21 5l-2 11H5m14 3c0 .6-.4 1-1 1H6c-.6 0-1-.4-1-1v-1h14v1z' />
     </IconSVG>
   );
@@ -238,7 +238,7 @@ export function CrownIcon(props: IconProps) {
 
 export function ArrowUpIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 16 16' {...props}> 
+    <IconSVG viewbox='0 0 16 16' {...props}>
       <path d='M8 12a.5.5 0 00.5-.5V5.707l2.146 2.147a.5.5 0 00.708-.708l-3-3a.5.5 0 00-.708 0l-3 3a.5.5 0 10.708.708L7.5 5.707V11.5a.5.5 0 00.5.5z' />
     </IconSVG>
   );
@@ -246,7 +246,7 @@ export function ArrowUpIcon(props: IconProps) {
 
 export function ArrowDownIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 16 16' {...props}> 
+    <IconSVG viewbox='0 0 16 16' {...props}>
       <path d='M8 4a.5.5 0 01.5.5v5.793l2.146-2.147a.5.5 0 01.708.708l-3 3a.5.5 0 01-.708 0l-3-3a.5.5 0 11.708-.708L7.5 10.293V4.5A.5.5 0 018 4z' />
     </IconSVG>
   );
@@ -254,7 +254,7 @@ export function ArrowDownIcon(props: IconProps) {
 
 export function CloneIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 512 512' {...props}> 
+    <IconSVG viewbox='0 0 512 512' {...props}>
       <path d='M64 464h224c8.8 0 16-7.2 16-16v-64h48v64c0 35.3-28.7 64-64 64H64c-35.35 0-64-28.7-64-64V224c0-35.3 28.65-64 64-64h64v48H64c-8.84 0-16 7.2-16 16v224c0 8.8 7.16 16 16 16zm96-400c0-35.35 28.7-64 64-64h224c35.3 0 64 28.65 64 64v224c0 35.3-28.7 64-64 64H224c-35.3 0-64-28.7-64-64V64zm64 240h224c8.8 0 16-7.2 16-16V64c0-8.84-7.2-16-16-16H224c-8.8 0-16 7.16-16 16v224c0 8.8 7.2 16 16 16z' />
     </IconSVG>
   );
@@ -262,7 +262,7 @@ export function CloneIcon(props: IconProps) {
 
 export function DumpBinIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M19 4h-3.5l-1-1h-5l-1 1H5v2h14M6 19a2 2 0 002 2h8a2 2 0 002-2V7H6v12z' />
     </IconSVG>
   );
@@ -270,7 +270,7 @@ export function DumpBinIcon(props: IconProps) {
 
 export function ArrowsRotateIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M12 6v3l4-4-4-4v3a8 8 0 00-8 8c0 1.57.46 3.03 1.24 4.26L6.7 14.8A5.9 5.9 0 016 12a6 6 0 016-6m6.76 1.74L17.3 9.2c.44.84.7 1.8.7 2.8a6 6 0 01-6 6v-3l-4 4 4 4v-3a8 8 0 008-8c0-1.57-.46-3.03-1.24-4.26z' />
     </IconSVG>
   );
@@ -278,8 +278,8 @@ export function ArrowsRotateIcon(props: IconProps) {
 
 export function SaveIcon(props: IconProps) {
   return (
-    <IconSVG viewbox='0 0 24 24' {...props}> 
+    <IconSVG viewbox='0 0 24 24' {...props}>
       <path d='M19.35 10.04A7.49 7.49 0 0012 4C9.11 4 6.6 5.64 5.35 8.04A5.994 5.994 0 000 14a6 6 0 006 6h13a5 5 0 005-5c0-2.64-2.05-4.78-4.65-4.96M19 18H6a4 4 0 01-4-4c0-2.05 1.53-3.76 3.56-3.97l1.07-.11.5-.95A5.469 5.469 0 0112 6c2.62 0 4.88 1.86 5.39 4.43l.3 1.5 1.53.11A2.98 2.98 0 0122 15a3 3 0 01-3 3M8 13h2.55v3h2.9v-3H16l-4-4-4 4z' />
     </IconSVG>
   );
-}
\ No newline at end of file
+}
diff --git a/rsconcept/frontend/src/components/InfoMessage.tsx b/rsconcept/frontend/src/components/InfoMessage.tsx
index 349a6b8e..51c83d01 100644
--- a/rsconcept/frontend/src/components/InfoMessage.tsx
+++ b/rsconcept/frontend/src/components/InfoMessage.tsx
@@ -1,11 +1,11 @@
 interface InfoMessageProps {
-    message: string
+  message: string
 }
 
-export function InfoMessage({message}: InfoMessageProps) {
-    return (
-        <p className='font-bold'>{ message }</p>
-    );
+export function InfoMessage({ message }: InfoMessageProps) {
+  return (
+    <p className='font-bold'>{ message }</p>
+  );
 }
 
-export default InfoMessage;
\ No newline at end of file
+export default InfoMessage;
diff --git a/rsconcept/frontend/src/components/Navigation/Logo.tsx b/rsconcept/frontend/src/components/Navigation/Logo.tsx
index 4150685a..03f284ef 100644
--- a/rsconcept/frontend/src/components/Navigation/Logo.tsx
+++ b/rsconcept/frontend/src/components/Navigation/Logo.tsx
@@ -4,7 +4,7 @@ interface LogoProps {
   title: string
 }
 
-function Logo({title}: LogoProps) {
+function Logo({ title }: LogoProps) {
   return (
     <Link to='/' className='flex items-center mr-4' tabIndex={-1}>
       <img src='/favicon.svg' className='min-h-[2.5rem] mr-2 min-w-[2.5rem]' alt=''/>
@@ -12,4 +12,4 @@ function Logo({title}: LogoProps) {
     </Link>
   );
 }
-export default Logo;
\ No newline at end of file
+export default Logo;
diff --git a/rsconcept/frontend/src/components/Navigation/Navigation.tsx b/rsconcept/frontend/src/components/Navigation/Navigation.tsx
index b9b8108f..2bf1f49c 100644
--- a/rsconcept/frontend/src/components/Navigation/Navigation.tsx
+++ b/rsconcept/frontend/src/components/Navigation/Navigation.tsx
@@ -1,24 +1,25 @@
 import { useNavigate } from 'react-router-dom';
-import TopSearch from './TopSearch';
-import { EducationIcon, LibraryIcon } from '../Icons';
-import NavigationButton from './NavigationButton';
-import UserMenu from './UserMenu';
-import { useAuth } from '../../context/AuthContext';
-import UserTools from './UserTools';
-import Logo from './Logo';
-import { useConceptTheme } from '../../context/ThemeContext';
 
-function Navigation() {
-  const {user} = useAuth();
+import { useAuth } from '../../context/AuthContext';
+import { useConceptTheme } from '../../context/ThemeContext';
+import { EducationIcon, LibraryIcon } from '../Icons';
+import Logo from './Logo'
+import NavigationButton from './NavigationButton';
+import TopSearch from './TopSearch';
+import UserMenu from './UserMenu';
+import UserTools from './UserTools';
+
+function Navigation () {
+  const { user } = useAuth();
   const navigate = useNavigate();
   const { noNavigation, toggleNoNavigation } = useConceptTheme();
 
-  const navigateCommon = () => navigate('/rsforms?filter=common');
-  const navigateHelp = () => navigate('/manuals');
-  
+  const navigateCommon = () => { navigate('/rsforms?filter=common') };
+  const navigateHelp = () => { navigate('/manuals') };
+
   return (
     <nav className='sticky top-0 left-0 right-0 z-50'>
-      {!noNavigation && 
+      {!noNavigation &&
       <button
         title='Скрыть навигацию'
         className='absolute top-0 right-0 z-[60] w-[1.2rem] h-[4rem] border-b-2 border-l-2 clr-nav rounded-none'
@@ -26,7 +27,7 @@ function Navigation() {
       >
         <p>{'>'}</p><p>{'>'}</p>
       </button>}
-      {noNavigation && 
+      {noNavigation &&
       <button
         title='Показать навигацию'
         className='absolute top-0 right-0 z-[60] w-[4rem] h-[1.6rem] border-b-2 border-l-2 clr-nav  rounded-none'
@@ -34,7 +35,7 @@ function Navigation() {
       >
         {'∨∨∨'}
       </button>}
-      {!noNavigation && 
+      {!noNavigation &&
       <div className='pr-6 pl-2 py-2.5 h-[4rem] flex items-center justify-between border-b-2 clr-nav rounded-none'>
         <div className='flex items-start justify-start '>
           <Logo title='КонцептПортал' />
diff --git a/rsconcept/frontend/src/components/Navigation/NavigationButton.tsx b/rsconcept/frontend/src/components/Navigation/NavigationButton.tsx
index f011ebdb..f043afbd 100644
--- a/rsconcept/frontend/src/components/Navigation/NavigationButton.tsx
+++ b/rsconcept/frontend/src/components/Navigation/NavigationButton.tsx
@@ -7,7 +7,7 @@ interface NavigationButtonProps {
 
 const defaultColors = 'text-gray-500 hover:text-gray-900 dark:text-gray-400 dark:hover:text-white'
 
-function NavigationButton({icon, description, colorClass=defaultColors, onClick}: NavigationButtonProps) {
+function NavigationButton({ icon, description, colorClass = defaultColors, onClick }: NavigationButtonProps) {
   return (
     <button title={description}
       type='button'
@@ -19,4 +19,4 @@ function NavigationButton({icon, description, colorClass=defaultColors, onClick}
   );
 }
 
-export default NavigationButton;
\ No newline at end of file
+export default NavigationButton;
diff --git a/rsconcept/frontend/src/components/Navigation/ThemeSwitcher.tsx b/rsconcept/frontend/src/components/Navigation/ThemeSwitcher.tsx
index 61beb9a6..21f09447 100644
--- a/rsconcept/frontend/src/components/Navigation/ThemeSwitcher.tsx
+++ b/rsconcept/frontend/src/components/Navigation/ThemeSwitcher.tsx
@@ -3,7 +3,7 @@ import { DarkThemeIcon, LightThemeIcon } from '../Icons';
 import NavigationButton from './NavigationButton';
 
 function ThemeSwitcher() {
-  const {darkMode, toggleDarkMode} = useConceptTheme();
+  const { darkMode, toggleDarkMode } = useConceptTheme();
   return (
     <>
       {darkMode && <NavigationButton icon={<LightThemeIcon />} description='Светлая тема' onClick={toggleDarkMode} />}
@@ -12,4 +12,4 @@ function ThemeSwitcher() {
   );
 }
 
-export default ThemeSwitcher;
\ No newline at end of file
+export default ThemeSwitcher;
diff --git a/rsconcept/frontend/src/components/Navigation/TopSearch.tsx b/rsconcept/frontend/src/components/Navigation/TopSearch.tsx
index 981c9fde..154d8a43 100644
--- a/rsconcept/frontend/src/components/Navigation/TopSearch.tsx
+++ b/rsconcept/frontend/src/components/Navigation/TopSearch.tsx
@@ -4,7 +4,7 @@ interface TopSearchProps {
   placeholder: string
 }
 
-function TopSearch({placeholder}: TopSearchProps) {
+function TopSearch({ placeholder }: TopSearchProps) {
   return (
     <form action='#' method='GET' className='hidden md:block md:pl-2'>
       <div className='relative md:w-96'>
@@ -24,4 +24,4 @@ function TopSearch({placeholder}: TopSearchProps) {
   );
 }
 
-export default TopSearch;
\ No newline at end of file
+export default TopSearch;
diff --git a/rsconcept/frontend/src/components/Navigation/UserDropdown.tsx b/rsconcept/frontend/src/components/Navigation/UserDropdown.tsx
index 79198221..cb372d97 100644
--- a/rsconcept/frontend/src/components/Navigation/UserDropdown.tsx
+++ b/rsconcept/frontend/src/components/Navigation/UserDropdown.tsx
@@ -1,30 +1,32 @@
 import { useNavigate } from 'react-router-dom';
+
 import { useAuth } from '../../context/AuthContext';
-import DropdownButton from '../Common/DropdownButton';
 import { useConceptTheme } from '../../context/ThemeContext';
 import Dropdown from '../Common/Dropdown';
+import DropdownButton from '../Common/DropdownButton';
 
 interface UserDropdownProps {
-  hideDropdown: Function
+  hideDropdown: () => void
 }
 
-function UserDropdown({hideDropdown}: UserDropdownProps) {
-  const {darkMode, toggleDarkMode} = useConceptTheme();
+function UserDropdown({ hideDropdown }: UserDropdownProps) {
+  const { darkMode, toggleDarkMode } = useConceptTheme();
   const navigate = useNavigate();
-  const {user, logout} = useAuth();
+  const { user, logout } = useAuth();
 
   const navigateProfile = () => {
     hideDropdown()
     navigate('/profile');
   };
 
-  const logoutAndRedirect = () => {
-    hideDropdown()
-    logout(() => {navigate('/login/');})
+  const logoutAndRedirect =
+  () => {
+    hideDropdown();
+    logout(() => { navigate('/login/'); })
   };
 
   const navigateMyWork = () => {
-    hideDropdown()
+    hideDropdown();
     navigate('/rsforms?filter=personal');
   };
 
@@ -34,7 +36,7 @@ function UserDropdown({hideDropdown}: UserDropdownProps) {
         {user?.username}
       </DropdownButton>
       <DropdownButton description='Переключение темы оформления' onClick={toggleDarkMode}>
-        {darkMode ? 'Светлая тема' : 'Темная тема'} 
+        {darkMode ? 'Светлая тема' : 'Темная тема'}
       </DropdownButton>
       <DropdownButton onClick={navigateMyWork}>
         Мои схемы
@@ -46,4 +48,4 @@ function UserDropdown({hideDropdown}: UserDropdownProps) {
   );
 }
 
-export default UserDropdown;
\ No newline at end of file
+export default UserDropdown;
diff --git a/rsconcept/frontend/src/components/Navigation/UserMenu.tsx b/rsconcept/frontend/src/components/Navigation/UserMenu.tsx
index 1ef03586..aca76e97 100644
--- a/rsconcept/frontend/src/components/Navigation/UserMenu.tsx
+++ b/rsconcept/frontend/src/components/Navigation/UserMenu.tsx
@@ -1,9 +1,10 @@
-import { UserIcon } from '../Icons';
-import { useAuth } from '../../context/AuthContext';
-import UserDropdown from './UserDropdown';
-import NavigationButton from './NavigationButton';
 import { Link } from 'react-router-dom';
+
+import { useAuth } from '../../context/AuthContext';
 import useDropdown from '../../hooks/useDropdown';
+import { UserIcon } from '../Icons';
+import NavigationButton from './NavigationButton';
+import UserDropdown from './UserDropdown';
 
 function LoginRef() {
   return (
@@ -14,23 +15,23 @@ function LoginRef() {
 }
 
 function UserMenu() {
-  const {user} = useAuth();
+  const { user } = useAuth();
   const menu = useDropdown();
   return (
     <div ref={menu.ref}>
       { !user && <LoginRef />}
-      { user && 
+      { user &&
       <NavigationButton
         icon={<UserIcon />}
         description={`Пользователь ${user?.username}`}
-        onClick={menu.toggle} 
+        onClick={menu.toggle}
       />}
-      { user && menu.isActive && 
+      { user && menu.isActive &&
       <UserDropdown
-        hideDropdown={() => menu.hide()}
+        hideDropdown={() => { menu.hide(); }}
       />}
     </div>
   );
 }
 
-export default UserMenu;
\ No newline at end of file
+export default UserMenu;
diff --git a/rsconcept/frontend/src/components/Navigation/UserTools.tsx b/rsconcept/frontend/src/components/Navigation/UserTools.tsx
index 3808266a..15907379 100644
--- a/rsconcept/frontend/src/components/Navigation/UserTools.tsx
+++ b/rsconcept/frontend/src/components/Navigation/UserTools.tsx
@@ -1,18 +1,19 @@
 import { useNavigate } from 'react-router-dom';
-import NavigationButton from './NavigationButton';
-import { BellIcon, PlusIcon, SquaresIcon } from '../Icons';
 import { toast } from 'react-toastify';
 
+import { BellIcon, PlusIcon, SquaresIcon } from '../Icons';
+import NavigationButton from './NavigationButton';
+
 function UserTools() {
   const navigate = useNavigate();
-  
-  const navigateCreateRSForm = () => navigate('/rsform-create');
-  const navigateMyWork = () => navigate('/rsforms?filter=personal');
+
+  const navigateCreateRSForm = () => { navigate('/rsform-create'); };
+  const navigateMyWork = () => { navigate('/rsforms?filter=personal'); };
 
   const handleNotifications = () => {
     toast.info('Уведомления в разработке');
   };
-  
+
   return (
     <div className='flex items-center px-2 border-r-2 border-gray-400 dark:border-gray-300'>
       <span>
@@ -28,4 +29,4 @@ function UserTools() {
   );
 }
 
-export default UserTools;
\ No newline at end of file
+export default UserTools;
diff --git a/rsconcept/frontend/src/components/RequireAuth.tsx b/rsconcept/frontend/src/components/RequireAuth.tsx
index cd37f13a..18c8b2a0 100644
--- a/rsconcept/frontend/src/components/RequireAuth.tsx
+++ b/rsconcept/frontend/src/components/RequireAuth.tsx
@@ -6,22 +6,22 @@ interface RequireAuthProps {
   children: React.ReactNode
 }
 
-function RequireAuth({children}: RequireAuthProps) {
+function RequireAuth({ children }: RequireAuthProps) {
   const { user } = useAuth()
   return (
     <>
       {user && children}
-      {!user && 
+      {!user &&
         <div className='flex flex-col items-center'>
           <InfoMessage message={'Данная функция доступна только зарегистрированным пользователям. Пожалуйста войдите в систему'} />
           <div className='flex flex-col items-start'>
             <TextURL text='Войти в систему...' href='login' />
             <TextURL text='Зарегистрироваться...' href='signup' />
-          </div> 
+          </div>
         </div>
       }
     </>
   );
 }
 
-export default RequireAuth;
\ No newline at end of file
+export default RequireAuth;
diff --git a/rsconcept/frontend/src/components/ToasterThemed.tsx b/rsconcept/frontend/src/components/ToasterThemed.tsx
index dbd3dcff..d7134931 100644
--- a/rsconcept/frontend/src/components/ToasterThemed.tsx
+++ b/rsconcept/frontend/src/components/ToasterThemed.tsx
@@ -1,14 +1,15 @@
-import { ToastContainer, ToastContainerProps } from 'react-toastify';
+import { ToastContainer, type ToastContainerProps } from 'react-toastify';
+
 import { useConceptTheme } from '../context/ThemeContext';
 
-function ToasterThemed({theme, ...props}: ToastContainerProps) {
+function ToasterThemed({ theme, ...props }: ToastContainerProps) {
   const { darkMode } = useConceptTheme();
-  
+
   return (
-    <ToastContainer 
+    <ToastContainer
       theme={ darkMode ? 'dark' : 'light'}
       {...props}
     />
   );
 }
-export default ToasterThemed;
\ No newline at end of file
+export default ToasterThemed;
diff --git a/rsconcept/frontend/src/context/AuthContext.tsx b/rsconcept/frontend/src/context/AuthContext.tsx
index 1703c5da..52072836 100644
--- a/rsconcept/frontend/src/context/AuthContext.tsx
+++ b/rsconcept/frontend/src/context/AuthContext.tsx
@@ -1,15 +1,15 @@
-import { createContext, useCallback, useContext, useEffect, useLayoutEffect, useState } from 'react';
-import { ICurrentUser, IUserSignupData } from '../utils/models';
-import { ErrorInfo } from '../components/BackendError';
-import useLocalStorage from '../hooks/useLocalStorage';
-import { BackendCallback, getAuth, postLogin, postLogout, postSignup } from '../utils/backendAPI';
+import { createContext, useCallback, useContext, useLayoutEffect, useState } from 'react';
 
+import { type ErrorInfo } from '../components/BackendError';
+import useLocalStorage from '../hooks/useLocalStorage';
+import { type BackendCallback, getAuth, postLogin, postLogout, postSignup } from '../utils/backendAPI';
+import { type ICurrentUser, type IUserSignupData } from '../utils/models';
 
 interface IAuthContext {
   user: ICurrentUser | undefined
-  login: (username: string, password: string, callback?: BackendCallback) => Promise<void>
-  logout: (callback?: BackendCallback) => Promise<void>
-  signup: (data: IUserSignupData, callback?: BackendCallback) => Promise<void>
+  login: (username: string, password: string, callback?: BackendCallback) => void
+  logout: (callback?: BackendCallback) => void
+  signup: (data: IUserSignupData, callback?: BackendCallback) => void
   loading: boolean
   error: ErrorInfo
   setError: (error: ErrorInfo) => void
@@ -37,8 +37,8 @@ export const AuthState = ({ children }: AuthStateProps) => {
 
   const loadCurrentUser = useCallback(
     async () => {
-      getAuth({
-        onError: error => setUser(undefined),
+      await getAuth({
+        onError: () => { setUser(undefined); },
         onSucccess: response => {
           if (response.data.id) {
             setUser(response.data);
@@ -49,51 +49,54 @@ export const AuthState = ({ children }: AuthStateProps) => {
       });
     }, [setUser]
   );
-  
-  async function login(uname: string, pw: string, callback?: BackendCallback) {
+
+  function login(uname: string, pw: string, callback?: BackendCallback) {
     setError(undefined);
     postLogin({
-      data: {username: uname, password: pw},
+      data: { username: uname, password: pw },
       showError: true,
-      setLoading: setLoading,
-      onError: error => setError(error),
-      onSucccess: 
-      async (response) => {
-        await loadCurrentUser();
-        if(callback) callback(response);
+      setLoading,
+      onError: error => { setError(error); },
+      onSucccess:
+      (response) => {
+        loadCurrentUser()
+        .then(() => { if (callback) callback(response); })
+        .catch(console.error);
       }
-    });
+    }).catch(console.error);
   }
 
-  async function logout(callback?: BackendCallback) {
+  function logout(callback?: BackendCallback) {
     setError(undefined);
     postLogout({
       showError: true,
-      onSucccess: 
-      async (response) => {
-        await loadCurrentUser();
-        if (callback) callback(response);
+      onSucccess:
+      (response) => {
+        loadCurrentUser()
+        .then(() => { if (callback) callback(response); })
+        .catch(console.error);
       }
-    });
+    }).catch(console.error);
   }
 
-  async function signup(data: IUserSignupData, callback?: BackendCallback) {
+  function signup(data: IUserSignupData, callback?: BackendCallback) {
     setError(undefined);
     postSignup({
-      data: data,
+      data,
       showError: true,
-      setLoading: setLoading,
-      onError: error => setError(error),
+      setLoading,
+      onError: error => { setError(error); },
       onSucccess:
-      async (response) => {
-        await loadCurrentUser();
-        if (callback) callback(response);
+      (response) => {
+        loadCurrentUser()
+        .then(() => { if (callback) callback(response); })
+        .catch(console.error);
       }
-    });
+    }).catch(console.error);
   }
 
   useLayoutEffect(() => {
-    loadCurrentUser();
+    loadCurrentUser().catch(console.error);
   }, [loadCurrentUser])
 
   return (
@@ -103,4 +106,4 @@ export const AuthState = ({ children }: AuthStateProps) => {
       {children}
     </AuthContext.Provider>
   );
-};
\ No newline at end of file
+};
diff --git a/rsconcept/frontend/src/context/RSFormContext.tsx b/rsconcept/frontend/src/context/RSFormContext.tsx
index 40c9544f..825f700d 100644
--- a/rsconcept/frontend/src/context/RSFormContext.tsx
+++ b/rsconcept/frontend/src/context/RSFormContext.tsx
@@ -1,14 +1,15 @@
-import { createContext, useState, useContext, useMemo, useCallback } from 'react';
-import { IConstituenta, IRSForm } from '../utils/models';
-import { useRSFormDetails } from '../hooks/useRSFormDetails';
-import { ErrorInfo } from '../components/BackendError';
-import { useAuth } from './AuthContext';
-import { 
-  BackendCallback, deleteRSForm, getTRSFile, 
-  patchConstituenta, patchMoveConstituenta, patchRSForm, 
-  postClaimRSForm, patchDeleteConstituenta, postNewConstituenta 
-} from '../utils/backendAPI';
-import { toast } from 'react-toastify';
+import { createContext, useCallback, useContext, useMemo, useState } from 'react'
+import { toast } from 'react-toastify'
+
+import { type ErrorInfo } from '../components/BackendError'
+import { useRSFormDetails } from '../hooks/useRSFormDetails'
+import {
+  type BackendCallback, deleteRSForm, getTRSFile,
+  patchConstituenta, patchDeleteConstituenta, patchMoveConstituenta, patchRSForm,
+  postClaimRSForm, postNewConstituenta
+} from '../utils/backendAPI'
+import { type IConstituenta, type IRSForm } from '../utils/models'
+import { useAuth } from './AuthContext'
 
 interface IRSFormContext {
   schema?: IRSForm
@@ -25,32 +26,32 @@ interface IRSFormContext {
   isReadonly: boolean
   isTracking: boolean
   isForceAdmin: boolean
-  
+
   setActiveID: React.Dispatch<React.SetStateAction<number | undefined>>
   toggleForceAdmin: () => void
   toggleReadonly: () => void
   toggleTracking: () => void
 
-  update: (data: any, callback?: BackendCallback) => Promise<void>
-  destroy: (callback?: BackendCallback) => Promise<void>
-  claim: (callback?: BackendCallback) => Promise<void>
-  download: (callback: BackendCallback) => Promise<void>
+  update: (data: any, callback?: BackendCallback) => void
+  destroy: (callback?: BackendCallback) => void
+  claim: (callback?: BackendCallback) => void
+  download: (callback: BackendCallback) => void
 
-  cstUpdate: (data: any, callback?: BackendCallback) => Promise<void>
-  cstCreate: (data: any, callback?: BackendCallback) => Promise<void>
-  cstDelete: (data: any, callback?: BackendCallback) => Promise<void>
-  cstMoveTo: (data: any, callback?: BackendCallback) => Promise<void>
+  cstUpdate: (data: any, callback?: BackendCallback) => void
+  cstCreate: (data: any, callback?: BackendCallback) => void
+  cstDelete: (data: any, callback?: BackendCallback) => void
+  cstMoveTo: (data: any, callback?: BackendCallback) => void
 }
 
-const RSFormContext = createContext<IRSFormContext | null>(null);
+const RSFormContext = createContext<IRSFormContext | null>(null)
 export const useRSForm = () => {
-  const context = useContext(RSFormContext);
-  if (!context) {
+  const context = useContext(RSFormContext)
+  if (context == null) {
     throw new Error(
       'useRSForm has to be used within <RSFormState.Provider>'
-    );
+    )
   }
-  return context;
+  return context
 }
 
 interface RSFormStateProps {
@@ -59,163 +60,181 @@ interface RSFormStateProps {
 }
 
 export const RSFormState = ({ schemaID, children }: RSFormStateProps) => {
-  const { user } = useAuth();
-  const { schema, reload, error, setError, setSchema, loading } = useRSFormDetails({target: schemaID});
+  const { user } = useAuth()
+  const { schema, reload, error, setError, setSchema, loading } = useRSFormDetails({ target: schemaID })
   const [processing, setProcessing] = useState(false)
-  const [activeID, setActiveID] = useState<number | undefined>(undefined);
+  const [activeID, setActiveID] = useState<number | undefined>(undefined)
 
-  const [isForceAdmin, setIsForceAdmin] = useState(false);
-  const [isReadonly, setIsReadonly] = useState(false);
+  const [isForceAdmin, setIsForceAdmin] = useState(false)
+  const [isReadonly, setIsReadonly] = useState(false)
 
-  const isOwned = useMemo(() => user?.id === schema?.owner || false, [user, schema?.owner]);
-  const isClaimable = useMemo(() => user?.id !== schema?.owner || false, [user, schema?.owner]);
+  const isOwned = useMemo(() => user?.id === schema?.owner || false, [user, schema?.owner])
+  const isClaimable = useMemo(() => user?.id !== schema?.owner || false, [user, schema?.owner])
   const isEditable = useMemo(
-  () => {
-    return (
-      !loading && !isReadonly && 
-      (isOwned || (isForceAdmin && user?.is_staff) || false)
-    )
-  }, [user, isReadonly, isForceAdmin, isOwned, loading]);
+    () => {
+      return (
+        !loading && !isReadonly &&
+      ((isOwned || (isForceAdmin && user?.is_staff)) ?? false)
+      )
+    }, [user, isReadonly, isForceAdmin, isOwned, loading])
 
   const activeCst = useMemo(
-  () => {
-    return schema?.items && schema?.items.find((cst) => cst.id === activeID);
-  }, [schema?.items, activeID]);
-  
+    () => {
+      return schema?.items?.find((cst) => cst.id === activeID)
+    }, [schema?.items, activeID])
+
   const isTracking = useMemo(
-  () => {
-    return true;
-  }, []);
+    () => {
+      return true
+    }, [])
 
   const toggleTracking = useCallback(
-  () => {
-    toast('not implemented yet');
-  }, []);
+    () => {
+      toast('not implemented yet')
+    }, [])
 
   const update = useCallback(
-  async (data: any, callback?: BackendCallback) => {
-    setError(undefined);
-    patchRSForm(schemaID, {
-      data: data,
-      showError: true,
-      setLoading: setProcessing,
-      onError: error => setError(error),
-      onSucccess: async (response) => {
-        await reload();
-        if (callback) callback(response);
-      }
-    });
-  }, [schemaID, setError, reload]);
-
-  const destroy = useCallback(
-  async (callback?: BackendCallback) => {
-    setError(undefined);
-    deleteRSForm(schemaID, {
-      showError: true,
-      setLoading: setProcessing,
-      onError: error => setError(error),
-      onSucccess: callback
-    });
-  }, [schemaID, setError]);
-
-  const claim = useCallback(
-  async (callback?: BackendCallback) => {
-    setError(undefined);
-    postClaimRSForm(schemaID, {
-      showError: true,
-      setLoading: setProcessing,
-      onError: error => setError(error),
-      onSucccess: async (response) => {
-        schema!.owner = user!.id
-        schema!.time_update = response.data['time_update']
-        setSchema(schema)
-        if (callback) callback(response);
-      }
-    });
-  }, [schemaID, setError, schema, user, setSchema]);
-
-  const download = useCallback(
-  async (callback: BackendCallback) => {
-    setError(undefined);
-    getTRSFile(schemaID, {
-      showError: true,
-      setLoading: setProcessing,
-      onError: error => setError(error),
-      onSucccess: callback
-    });
-  }, [schemaID, setError]);
-
-  const cstUpdate = useCallback(
-  async (data: any, callback?: BackendCallback) => {
-    setError(undefined);
-    patchConstituenta(String(activeID), {
-      data: data,
-      showError: true,
-      setLoading: setProcessing,
-      onError: error => setError(error),
-      onSucccess: callback
-    });
-  }, [activeID, setError]);
-
-  const cstCreate = useCallback(
-  async (data: any, callback?: BackendCallback) => {
-    setError(undefined);
-    postNewConstituenta(schemaID, {
-      data: data,
-      showError: true,
-      setLoading: setProcessing,
-      onError: error => setError(error),
-      onSucccess: async (response) => {
-        setSchema(response.data['schema']);
-        if (callback) callback(response);
-      }
-    });
-  }, [schemaID, setError, setSchema]);
-
-  const cstDelete = useCallback(
-    async (data: any, callback?: BackendCallback) => {
-      setError(undefined);
-      patchDeleteConstituenta(schemaID, {
-        data: data,
+    (data: any, callback?: BackendCallback) => {
+      setError(undefined)
+      patchRSForm(schemaID, {
+        data,
         showError: true,
         setLoading: setProcessing,
-        onError: error => setError(error),
-        onSucccess: async (response) => {
-          setSchema(response.data);
-          if (callback) callback(response);
+        onError: error => { setError(error) },
+        onSucccess: (response) => {
+          reload()
+          .then(() => { if (callback != null) callback(response); })
+          .catch(console.error);
         }
-      });
-    }, [schemaID, setError, setSchema]);
+      }).catch(console.error);
+    }, [schemaID, setError, reload])
 
-    const cstMoveTo = useCallback(
-      async (data: any, callback?: BackendCallback) => {
-        setError(undefined);
-        patchMoveConstituenta(schemaID, {
-          data: data,
-          showError: true,
-          setLoading: setProcessing,
-          onError: error => setError(error),
-          onSucccess: (response) => {
-            setSchema(response.data);
-            if (callback) callback(response);
-          }
-        });
-      }, [schemaID, setError, setSchema]);
+  const destroy = useCallback(
+    (callback?: BackendCallback) => {
+      setError(undefined)
+      deleteRSForm(schemaID, {
+        showError: true,
+        setLoading: setProcessing,
+        onError: error => { setError(error) },
+        onSucccess: callback
+      }).catch(console.error);
+    }, [schemaID, setError])
+
+  const claim = useCallback(
+    (callback?: BackendCallback) => {
+      if (!schema || !user) {
+        return;
+      }
+      setError(undefined)
+      postClaimRSForm(schemaID, {
+        showError: true,
+        setLoading: setProcessing,
+        onError: error => { setError(error) },
+        onSucccess: (response) => {
+          schema.owner = user.id
+          schema.time_update = response.data.time_update
+          setSchema(schema)
+          if (callback != null) callback(response)
+        }
+      }).catch(console.error);
+    }, [schemaID, setError, schema, user, setSchema])
+
+  const download = useCallback(
+    (callback: BackendCallback) => {
+      setError(undefined)
+      getTRSFile(schemaID, {
+        showError: true,
+        setLoading: setProcessing,
+        onError: error => { setError(error) },
+        onSucccess: callback
+      }).catch(console.error);
+    }, [schemaID, setError])
+
+  const cstUpdate = useCallback(
+    (data: any, callback?: BackendCallback) => {
+      setError(undefined)
+      patchConstituenta(String(activeID), {
+        data,
+        showError: true,
+        setLoading: setProcessing,
+        onError: error => { setError(error) },
+        onSucccess: callback
+      }).catch(console.error);
+    }, [activeID, setError])
+
+  const cstCreate = useCallback(
+    (data: any, callback?: BackendCallback) => {
+      setError(undefined)
+      postNewConstituenta(schemaID, {
+        data,
+        showError: true,
+        setLoading: setProcessing,
+        onError: error => { setError(error) },
+        onSucccess: (response) => {
+          setSchema(response.data.schema)
+          if (callback != null) callback(response)
+        }
+      }).catch(console.error);
+    }, [schemaID, setError, setSchema])
+
+  const cstDelete = useCallback(
+    (data: any, callback?: BackendCallback) => {
+      setError(undefined)
+      patchDeleteConstituenta(schemaID, {
+        data,
+        showError: true,
+        setLoading: setProcessing,
+        onError: error => { setError(error) },
+        onSucccess: (response) => {
+          setSchema(response.data)
+          if (callback != null) callback(response)
+        }
+      }).catch(console.error);
+    }, [schemaID, setError, setSchema])
+
+  const cstMoveTo = useCallback(
+    (data: any, callback?: BackendCallback) => {
+      setError(undefined)
+      patchMoveConstituenta(schemaID, {
+        data,
+        showError: true,
+        setLoading: setProcessing,
+        onError: error => { setError(error) },
+        onSucccess: (response) => {
+          setSchema(response.data)
+          if (callback != null) callback(response)
+        }
+      }).catch(console.error);
+    }, [schemaID, setError, setSchema])
 
   return (
     <RSFormContext.Provider value={{
-      schema, error, loading, processing,
-      activeID, activeCst,
+      schema,
+      error,
+      loading,
+      processing,
+      activeID,
+      activeCst,
       setActiveID,
-      isForceAdmin, isReadonly,
-      toggleForceAdmin: () => setIsForceAdmin(prev => !prev),
-      toggleReadonly: () => setIsReadonly(prev => !prev),
-      isOwned, isEditable, isClaimable,
-      isTracking, toggleTracking,
-      update, download, destroy, claim,
-      cstUpdate, cstCreate, cstDelete, cstMoveTo,
+      isForceAdmin,
+      isReadonly,
+      toggleForceAdmin: () => { setIsForceAdmin(prev => !prev) },
+      toggleReadonly: () => { setIsReadonly(prev => !prev) },
+      isOwned,
+      isEditable,
+      isClaimable,
+      isTracking,
+      toggleTracking,
+      update,
+      download,
+      destroy,
+      claim,
+      cstUpdate,
+      cstCreate,
+      cstDelete,
+      cstMoveTo
     }}>
       { children }
     </RSFormContext.Provider>
-  );
-}
\ No newline at end of file
+  )
+}
diff --git a/rsconcept/frontend/src/context/ThemeContext.tsx b/rsconcept/frontend/src/context/ThemeContext.tsx
index df0eecd2..feebb907 100644
--- a/rsconcept/frontend/src/context/ThemeContext.tsx
+++ b/rsconcept/frontend/src/context/ThemeContext.tsx
@@ -1,6 +1,6 @@
 import { createContext, useContext, useEffect, useState } from 'react';
-import useLocalStorage from '../hooks/useLocalStorage';
 
+import useLocalStorage from '../hooks/useLocalStorage';
 
 interface IThemeContext {
   darkMode: boolean
@@ -44,10 +44,12 @@ export const ThemeState = ({ children }: ThemeStateProps) => {
 
   return (
     <ThemeContext.Provider value={{
-      darkMode, toggleDarkMode: () => setDarkMode(prev => !prev),
-      noNavigation, toggleNoNavigation: () => setNoNavigation(prev => !prev),
+      darkMode,
+      toggleDarkMode: () => { setDarkMode(prev => !prev); },
+      noNavigation,
+      toggleNoNavigation: () => { setNoNavigation(prev => !prev); }
     }}>
       {children}
     </ThemeContext.Provider>
   );
-}
\ No newline at end of file
+}
diff --git a/rsconcept/frontend/src/context/UsersContext.tsx b/rsconcept/frontend/src/context/UsersContext.tsx
index 3608b838..fe7498a2 100644
--- a/rsconcept/frontend/src/context/UsersContext.tsx
+++ b/rsconcept/frontend/src/context/UsersContext.tsx
@@ -1,7 +1,7 @@
-import { createContext, useCallback, useContext, useEffect, useState } from 'react'
-import { IUserInfo } from '../utils/models'
-import { getActiveUsers } from '../utils/backendAPI'
+import { createContext, useCallback, useContext, useEffect, useState } from 'react';
 
+import { getActiveUsers } from '../utils/backendAPI';
+import { type IUserInfo } from '../utils/models';
 
 interface IUsersContext {
   users: IUserInfo[]
@@ -9,10 +9,10 @@ interface IUsersContext {
   getUserLabel: (userID?: number) => string
 }
 
-const UsersContext = createContext<IUsersContext | null>(null);
-export const useUsers = () => {
+const UsersContext = createContext<IUsersContext | null>(null)
+export const useUsers = (): IUsersContext => {
   const context = useContext(UsersContext);
-  if (!context) {
+  if (context == null) {
     throw new Error(
       'useUsers has to be used within <UsersState.Provider>'
     );
@@ -25,47 +25,48 @@ interface UsersStateProps {
 }
 
 export const UsersState = ({ children }: UsersStateProps) => {
-  const [users, setUsers] = useState<IUserInfo[]>([]);
+  const [users, setUsers] = useState<IUserInfo[]>([])
 
   const getUserLabel = (userID?: number) => {
-    const user = users.find(({id}) => id === userID);
-    if (!user) {
-      return (userID ? userID.toString() : 'Отсутствует');
+    const user = users.find(({ id }) => id === userID)
+    if (user == null) {
+      return (userID !== undefined ? userID.toString() : 'Отсутствует');
     }
-    if (user.first_name || user.last_name) {
-      if (!user.last_name) {
+    const hasFirstName = user.first_name != null && user.first_name !== '';
+    const hasLastName = user.last_name != null && user.last_name !== '';
+    if (hasFirstName || hasLastName) {
+      if (!hasLastName) {
         return user.first_name;
       }
-      if (!user.first_name) {
+      if (!hasFirstName) {
         return user.last_name;
       }
-      return user.first_name + ' ' + user.last_name
+      return user.first_name + ' ' + user.last_name;
     }
     return user.username;
-  } 
-  
+  }
+
   const reload = useCallback(
     async () => {
-      getActiveUsers({
+      await getActiveUsers({
         showError: true,
-        onError: error => setUsers([]),
-        onSucccess: response => {
-          setUsers(response ? response.data : []);
-        }
+        onError: () => { setUsers([]); },
+        onSucccess: response => { setUsers(response.data); }
       });
     }, [setUsers]
-  );
+  )
 
   useEffect(() => {
-    reload();
-  }, [reload]);
+    reload().catch(console.error);
+  }, [reload])
 
   return (
     <UsersContext.Provider value={{
       users,
-      reload, getUserLabel
+      reload,
+      getUserLabel
     }}>
       { children }
     </UsersContext.Provider>
-    );
-}
\ No newline at end of file
+  );
+}
diff --git a/rsconcept/frontend/src/hooks/useCheckExpression.ts b/rsconcept/frontend/src/hooks/useCheckExpression.ts
index 43cbf4dd..41da9220 100644
--- a/rsconcept/frontend/src/hooks/useCheckExpression.ts
+++ b/rsconcept/frontend/src/hooks/useCheckExpression.ts
@@ -1,24 +1,25 @@
+import { type AxiosResponse } from 'axios';
 import { useCallback, useState } from 'react'
-import { ErrorInfo } from '../components/BackendError';
-import { postCheckExpression } from '../utils/backendAPI';
-import { IRSForm } from '../utils/models';
-import { AxiosResponse } from 'axios';
 
-function useCheckExpression({schema}: {schema?: IRSForm}) {
+import { type ErrorInfo } from '../components/BackendError';
+import { postCheckExpression } from '../utils/backendAPI';
+import { type IRSForm } from '../utils/models';
+
+function useCheckExpression({ schema }: { schema?: IRSForm }) {
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<ErrorInfo>(undefined);
   const [parseData, setParseData] = useState<any | undefined>(undefined);
 
-  const resetParse = useCallback(() => setParseData(undefined), []);
-  
+  const resetParse = useCallback(() => { setParseData(undefined); }, []);
+
   async function checkExpression(expression: string, onSuccess?: (response: AxiosResponse) => void) {
     setError(undefined);
     setParseData(undefined);
-    postCheckExpression(String(schema!.id), {
-      data: {'expression': expression},
+    await postCheckExpression(String(schema?.id), {
+      data: { expression },
       showError: true,
-      setLoading: setLoading,
-      onError: error => setError(error),
+      setLoading,
+      onError: error => { setError(error); },
       onSucccess: (response) => {
         setParseData(response.data);
         if (onSuccess) onSuccess(response);
@@ -29,4 +30,4 @@ function useCheckExpression({schema}: {schema?: IRSForm}) {
   return { parseData, checkExpression, resetParse, error, setError, loading };
 }
 
-export default useCheckExpression;
\ No newline at end of file
+export default useCheckExpression;
diff --git a/rsconcept/frontend/src/hooks/useClickedOutside.ts b/rsconcept/frontend/src/hooks/useClickedOutside.ts
index af0b7038..5f75f4b3 100644
--- a/rsconcept/frontend/src/hooks/useClickedOutside.ts
+++ b/rsconcept/frontend/src/hooks/useClickedOutside.ts
@@ -1,12 +1,13 @@
 import { useEffect } from 'react';
+
 import { assertIsNode } from '../utils/utils';
 
-function useClickedOutside({ref, callback}: {ref: React.RefObject<HTMLElement>, callback: Function}) {
+function useClickedOutside({ ref, callback }: { ref: React.RefObject<HTMLElement>, callback?: () => void }) {
   useEffect(() => {
     function handleClickOutside(event: MouseEvent) {
       assertIsNode(event.target);
       if (ref.current && !ref.current.contains(event.target)) {
-        callback()
+        if (callback) callback();
       }
     }
     document.addEventListener('mouseup', handleClickOutside);
@@ -16,4 +17,4 @@ function useClickedOutside({ref, callback}: {ref: React.RefObject<HTMLElement>,
   }, [ref, callback]);
 };
 
-export default useClickedOutside;
\ No newline at end of file
+export default useClickedOutside;
diff --git a/rsconcept/frontend/src/hooks/useDropdown.ts b/rsconcept/frontend/src/hooks/useDropdown.ts
index eb0016c6..ef17f38e 100644
--- a/rsconcept/frontend/src/hooks/useDropdown.ts
+++ b/rsconcept/frontend/src/hooks/useDropdown.ts
@@ -1,19 +1,20 @@
 import { useRef, useState } from 'react';
+
 import useClickedOutside from './useClickedOutside';
 
 function useDropdown() {
   const [isActive, setIsActive] = useState(false);
   const ref = useRef(null);
 
-  useClickedOutside({ref: ref, callback: () => setIsActive(false)})
-  
+  useClickedOutside({ ref, callback: () => { setIsActive(false); } })
+
   return {
-    ref: ref, 
-    isActive: isActive, 
-    setIsActive: setIsActive,
-    toggle: () => setIsActive(!isActive),
-    hide: () => setIsActive(false)
+    ref,
+    isActive,
+    setIsActive,
+    toggle: () => { setIsActive(!isActive); },
+    hide: () => { setIsActive(false); }
   };
 };
 
-export default useDropdown;
\ No newline at end of file
+export default useDropdown;
diff --git a/rsconcept/frontend/src/hooks/useLocalStorage.ts b/rsconcept/frontend/src/hooks/useLocalStorage.ts
index 27d248ec..43447339 100644
--- a/rsconcept/frontend/src/hooks/useLocalStorage.ts
+++ b/rsconcept/frontend/src/hooks/useLocalStorage.ts
@@ -1,20 +1,20 @@
-import { useState, useEffect } from 'react';
+import { useEffect, useState } from 'react';
 
 function getStorageValue<ValueType>(key: string, defaultValue: ValueType) {
   const saved = localStorage.getItem(key);
-  const initial = saved ? JSON.parse(saved!) : undefined;
+  const initial = saved ? JSON.parse(saved) : undefined;
   return initial || defaultValue;
 }
 
-const useLocalStorage = 
-<ValueType>(key: string, defaultValue: ValueType): 
-[ValueType, React.Dispatch<React.SetStateAction<ValueType>>] => {
+const useLocalStorage =
+<ValueType>(key: string, defaultValue: ValueType):
+  [ValueType, React.Dispatch<React.SetStateAction<ValueType>>] => {
   const [value, setValue] = useState<ValueType>(() => {
     return getStorageValue(key, defaultValue);
   });
 
   useEffect(() => {
-    if(value === undefined) {
+    if (value === undefined) {
       localStorage.removeItem(key)
     } else {
       localStorage.setItem(key, JSON.stringify(value));
@@ -24,4 +24,4 @@ const useLocalStorage =
   return [value, setValue];
 };
 
-export default useLocalStorage;
\ No newline at end of file
+export default useLocalStorage;
diff --git a/rsconcept/frontend/src/hooks/useNewRSForm.ts b/rsconcept/frontend/src/hooks/useNewRSForm.ts
index 5b7724a4..63741fee 100644
--- a/rsconcept/frontend/src/hooks/useNewRSForm.ts
+++ b/rsconcept/frontend/src/hooks/useNewRSForm.ts
@@ -1,30 +1,32 @@
 import { useState } from 'react'
-import { ErrorInfo } from '../components/BackendError';
+
+import { type ErrorInfo } from '../components/BackendError';
 import { postNewRSForm } from '../utils/backendAPI';
 
 function useNewRSForm() {
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<ErrorInfo>(undefined);
-  
-  async function createSchema({data, file, onSuccess}: { 
-    data: any, file?: File, 
+
+  async function createSchema({ data, file, onSuccess }: {
+    data: any
+    file?: File
     onSuccess: (newID: string) => void
   }) {
     setError(undefined);
     if (file) {
-      data['file'] = file;
-      data['fileName'] = file.name;
+      data.file = file;
+      data.fileName = file.name;
     }
-    postNewRSForm({
-      data: data,
+    await postNewRSForm({
+      data,
       showError: true,
-      setLoading: setLoading,
-      onError: error => setError(error),
-      onSucccess: response => onSuccess(response.data.id)
+      setLoading,
+      onError: error => { setError(error); },
+      onSucccess: response => { onSuccess(response.data.id); }
     });
   }
 
   return { createSchema, error, setError, loading };
 }
 
-export default useNewRSForm;
\ No newline at end of file
+export default useNewRSForm;
diff --git a/rsconcept/frontend/src/hooks/useRSFormDetails.ts b/rsconcept/frontend/src/hooks/useRSFormDetails.ts
index d42497af..44dabe0c 100644
--- a/rsconcept/frontend/src/hooks/useRSFormDetails.ts
+++ b/rsconcept/frontend/src/hooks/useRSFormDetails.ts
@@ -1,9 +1,10 @@
 import { useCallback, useEffect, useState } from 'react'
-import { CalculateStats, IRSForm } from '../utils/models'
-import { ErrorInfo } from '../components/BackendError';
-import { getRSFormDetails } from '../utils/backendAPI';
 
-export function useRSFormDetails({target}: {target?: string}) {
+import { type ErrorInfo } from '../components/BackendError';
+import { getRSFormDetails } from '../utils/backendAPI';
+import { CalculateStats, type IRSForm } from '../utils/models'
+
+export function useRSFormDetails({ target }: { target?: string }) {
   const [schema, setInnerSchema] = useState<IRSForm | undefined>(undefined);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<ErrorInfo>(undefined);
@@ -15,27 +16,27 @@ export function useRSFormDetails({target}: {target?: string}) {
   }
 
   const fetchData = useCallback(
-  async () => {
-    setError(undefined);
-    setInnerSchema(undefined);
-    if (!target) {
-      return;
-    }
-    getRSFormDetails(target, {
-      showError: true,
-      setLoading: setLoading,
-      onError: error => setError(error),
-      onSucccess: (response) => setSchema(response.data)
-    });
-  }, [target]);
+    async () => {
+      setError(undefined);
+      setInnerSchema(undefined);
+      if (!target) {
+        return;
+      }
+      await getRSFormDetails(target, {
+        showError: true,
+        setLoading,
+        onError: error => { setError(error); },
+        onSucccess: (response) => { setSchema(response.data); }
+      });
+    }, [target]);
 
   async function reload() {
-    fetchData();
+    await fetchData();
   }
 
   useEffect(() => {
-    fetchData();
+    fetchData().catch((error) => { setError(error); });
   }, [fetchData])
 
   return { schema, setSchema, reload, error, setError, loading };
-}
\ No newline at end of file
+}
diff --git a/rsconcept/frontend/src/hooks/useRSForms.ts b/rsconcept/frontend/src/hooks/useRSForms.ts
index cfb41b2f..7fe91040 100644
--- a/rsconcept/frontend/src/hooks/useRSForms.ts
+++ b/rsconcept/frontend/src/hooks/useRSForms.ts
@@ -1,7 +1,8 @@
 import { useCallback, useState } from 'react'
-import { IRSForm } from '../utils/models'
-import { ErrorInfo } from '../components/BackendError';
+
+import { type ErrorInfo } from '../components/BackendError';
 import { getRSForms } from '../utils/backendAPI';
+import { type IRSForm } from '../utils/models'
 
 export enum FilterType {
   PERSONAL = 'personal',
@@ -19,13 +20,13 @@ export function useRSForms() {
   const [error, setError] = useState<ErrorInfo>(undefined);
 
   const loadList = useCallback(async (filter: RSFormsFilter) => {
-    getRSForms(filter, {
+    await getRSForms(filter, {
       showError: true,
-      setLoading: setLoading,
-      onError: error => setError(error),
-      onSucccess: response => setRSForms(response.data)
+      setLoading,
+      onError: error => { setError(error); },
+      onSucccess: response => { setRSForms(response.data); }
     });
   }, []);
 
   return { rsforms, error, loading, loadList };
-}
\ No newline at end of file
+}
diff --git a/rsconcept/frontend/src/hooks/useUserProfile.ts b/rsconcept/frontend/src/hooks/useUserProfile.ts
index 8d40c5cd..d86b3344 100644
--- a/rsconcept/frontend/src/hooks/useUserProfile.ts
+++ b/rsconcept/frontend/src/hooks/useUserProfile.ts
@@ -1,29 +1,30 @@
 import { useCallback, useEffect, useState } from 'react'
-import { IUserProfile } from '../utils/models'
-import { ErrorInfo } from '../components/BackendError'
+
+import { type ErrorInfo } from '../components/BackendError'
 import { getProfile } from '../utils/backendAPI'
+import { type IUserProfile } from '../utils/models'
 
 export function useUserProfile() {
   const [user, setUser] = useState<IUserProfile | undefined>(undefined);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<ErrorInfo>(undefined);
-  
+
   const fetchUser = useCallback(
     async () => {
       setError(undefined);
       setUser(undefined);
-      getProfile({
+      await getProfile({
         showError: true,
-        setLoading: setLoading,
-        onError: error => setError(error),
-        onSucccess: response => setUser(response.data)
+        setLoading,
+        onError: error => { setError(error); },
+        onSucccess: response => { setUser(response.data); }
       });
     }, [setUser]
   )
 
   useEffect(() => {
-    fetchUser();
+    fetchUser().catch((error) => { setError(error); });
   }, [fetchUser])
 
   return { user, fetchUser, error, loading };
-}
\ No newline at end of file
+}
diff --git a/rsconcept/frontend/src/index.tsx b/rsconcept/frontend/src/index.tsx
index fc178f60..f16d55e3 100644
--- a/rsconcept/frontend/src/index.tsx
+++ b/rsconcept/frontend/src/index.tsx
@@ -1,17 +1,19 @@
 'use client';
 
-import React from 'react';
-import axios from 'axios';
 import './index.css';
 import 'react-toastify/dist/ReactToastify.css';
+
+import axios from 'axios';
+import React from 'react';
 import ReactDOM from 'react-dom/client';
+import { ErrorBoundary } from 'react-error-boundary';
+import { IntlProvider } from 'react-intl';
 import { BrowserRouter } from 'react-router-dom';
+
 import App from './App';
+import ErrorFallback from './components/ErrorFallback';
 import { AuthState } from './context/AuthContext';
 import { ThemeState } from './context/ThemeContext';
-import { IntlProvider } from 'react-intl';
-import { ErrorBoundary } from 'react-error-boundary';
-import ErrorFallback from './components/ErrorFallback';
 import { UsersState } from './context/UsersContext';
 
 axios.defaults.withCredentials = true
@@ -28,13 +30,13 @@ const resetState = () => {
 
 const logError = (error: Error, info: { componentStack: string }) => {
   console.log('Error fallback: ' + error.message)
-  console.log('Component stack: ' + info)
+  console.log('Component stack: ' + info.componentStack)
 };
 
 root.render(
   <React.StrictMode>
   <BrowserRouter>
-  <ErrorBoundary 
+  <ErrorBoundary
     FallbackComponent={ErrorFallback}
     onReset={resetState}
     onError={logError}
diff --git a/rsconcept/frontend/src/pages/HomePage.tsx b/rsconcept/frontend/src/pages/HomePage.tsx
index 5f318855..773b6d3c 100644
--- a/rsconcept/frontend/src/pages/HomePage.tsx
+++ b/rsconcept/frontend/src/pages/HomePage.tsx
@@ -1,15 +1,16 @@
 import { useNavigate } from 'react-router-dom';
+
 import { useAuth } from '../context/AuthContext';
 
 function HomePage() {
   const navigate = useNavigate();
-  const {user} = useAuth();
+  const { user } = useAuth();
   if (user) {
     navigate('/rsforms?filter=personal');
   } else {
     navigate('/rsforms?filter=common');
   }
-  
+
   return (
     <div className='flex flex-col items-center justify-center w-full py-2'>
       <p>Home page</p>
@@ -17,4 +18,4 @@ function HomePage() {
   );
 }
 
-export default HomePage;
\ No newline at end of file
+export default HomePage;
diff --git a/rsconcept/frontend/src/pages/LoginPage.tsx b/rsconcept/frontend/src/pages/LoginPage.tsx
index a32d0455..e3e99ab2 100644
--- a/rsconcept/frontend/src/pages/LoginPage.tsx
+++ b/rsconcept/frontend/src/pages/LoginPage.tsx
@@ -1,25 +1,25 @@
 import { useEffect, useState } from 'react';
-
-import TextInput from '../components/Common/TextInput';
-import Form from '../components/Common/Form';
-import { useAuth } from '../context/AuthContext';
 import { useLocation, useNavigate } from 'react-router-dom';
-import SubmitButton from '../components/Common/SubmitButton';
+
 import BackendError from '../components/BackendError';
-import InfoMessage from '../components/InfoMessage';
+import Form from '../components/Common/Form';
+import SubmitButton from '../components/Common/SubmitButton';
+import TextInput from '../components/Common/TextInput';
 import TextURL from '../components/Common/TextURL';
+import InfoMessage from '../components/InfoMessage';
+import { useAuth } from '../context/AuthContext';
 
 function LoginPage() {
   const [username, setUsername] = useState('');
   const [password, setPassword] = useState('');
   const { user, login, loading, error, setError } = useAuth()
-  
+
   const navigate = useNavigate();
   const search = useLocation().search;
 
   useEffect(() => {
     const name = new URLSearchParams(search).get('username');
-    setUsername(name || '');
+    setUsername(name ?? '');
     setPassword('');
   }, [search]);
 
@@ -30,29 +30,28 @@ function LoginPage() {
   const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
     event.preventDefault();
     if (!loading) {
-      login(username, password, () => navigate('/rsforms?filter=personal'));
+      login(username, password, () => { navigate('/rsforms?filter=personal'); });
     }
   };
 
   return (
-    <div className='w-full py-2'> { user ? 
-      <InfoMessage message={`Вы вошли в систему как ${user.username}`} /> 
-      :
-      <Form title='Ввод данных пользователя' onSubmit={handleSubmit} widthClass='w-[20rem]'>
+    <div className='w-full py-2'> { user
+      ? <InfoMessage message={`Вы вошли в систему как ${user.username}`} />
+      : <Form title='Ввод данных пользователя' onSubmit={handleSubmit} widthClass='w-[20rem]'>
         <TextInput id='username'
           label='Имя пользователя'
           required
           type='text'
           value={username}
           autoFocus
-          onChange={event => setUsername(event.target.value)} 
+          onChange={event => { setUsername(event.target.value); }}
         />
         <TextInput id='password'
           label='Пароль'
           required
           type='password'
           value={password}
-          onChange={event => setPassword(event.target.value)}
+          onChange={event => { setPassword(event.target.value); }}
         />
 
         <div className='flex items-center justify-between mt-4'>
@@ -68,4 +67,4 @@ function LoginPage() {
   );
 }
 
-export default LoginPage;
\ No newline at end of file
+export default LoginPage;
diff --git a/rsconcept/frontend/src/pages/ManualsPage.tsx b/rsconcept/frontend/src/pages/ManualsPage.tsx
index 9cdca64d..e715c7cb 100644
--- a/rsconcept/frontend/src/pages/ManualsPage.tsx
+++ b/rsconcept/frontend/src/pages/ManualsPage.tsx
@@ -20,4 +20,4 @@ function ManualsPage() {
   );
 }
 
-export default ManualsPage;
\ No newline at end of file
+export default ManualsPage;
diff --git a/rsconcept/frontend/src/pages/NotFoundPage.tsx b/rsconcept/frontend/src/pages/NotFoundPage.tsx
index 71765938..27a23c8a 100644
--- a/rsconcept/frontend/src/pages/NotFoundPage.tsx
+++ b/rsconcept/frontend/src/pages/NotFoundPage.tsx
@@ -7,4 +7,4 @@ export function NotFoundPage() {
   );
 }
 
-export default NotFoundPage;
\ No newline at end of file
+export default NotFoundPage;
diff --git a/rsconcept/frontend/src/pages/RSFormCreatePage.tsx b/rsconcept/frontend/src/pages/RSFormCreatePage.tsx
index ba9cabfd..5b347254 100644
--- a/rsconcept/frontend/src/pages/RSFormCreatePage.tsx
+++ b/rsconcept/frontend/src/pages/RSFormCreatePage.tsx
@@ -1,17 +1,17 @@
 import { useEffect, useState } from 'react';
-
-import TextInput from '../components/Common/TextInput';
-import Form from '../components/Common/Form';
-import SubmitButton from '../components/Common/SubmitButton';
-import BackendError from '../components/BackendError';
-import { IRSFormCreateData } from '../utils/models';
-import RequireAuth from '../components/RequireAuth';
-import useNewRSForm from '../hooks/useNewRSForm';
 import { useNavigate } from 'react-router-dom';
-import TextArea from '../components/Common/TextArea';
+import { toast } from 'react-toastify';
+
+import BackendError from '../components/BackendError';
 import Checkbox from '../components/Common/Checkbox';
 import FileInput from '../components/Common/FileInput';
-import { toast } from 'react-toastify';
+import Form from '../components/Common/Form';
+import SubmitButton from '../components/Common/SubmitButton';
+import TextArea from '../components/Common/TextArea';
+import TextInput from '../components/Common/TextInput';
+import RequireAuth from '../components/RequireAuth';
+import useNewRSForm from '../hooks/useNewRSForm';
+import { type IRSFormCreateData } from '../utils/models';
 
 function RSFormCreatePage() {
   const navigate = useNavigate();
@@ -29,7 +29,7 @@ function RSFormCreatePage() {
       setFile(undefined)
     }
   }
-  
+
   const onSuccess = (newID: string) => {
     toast.success('Схема успешно создана');
     navigate(`/rsforms/${newID}`);
@@ -39,54 +39,55 @@ function RSFormCreatePage() {
   useEffect(() => {
     setError(undefined)
   }, [title, alias, setError]);
-  
+
   const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
     event.preventDefault();
-    if (!loading) {
-      const data: IRSFormCreateData  = {
-        'title': title,
-        'alias': alias,
-        'comment': comment,
-        'is_common': common,
-      };
-      createSchema({
-        data: data,
-        file: file,
-        onSuccess: onSuccess
-      });
+    if (loading) {
+      return;
     }
+    const data: IRSFormCreateData = {
+      title,
+      alias,
+      comment,
+      is_common: common
+    };
+    void createSchema({
+      data,
+      file,
+      onSuccess
+    });
   };
 
   return (
-    <RequireAuth> 
+    <RequireAuth>
       <Form title='Создание концептуальной схемы' onSubmit={handleSubmit} widthClass='max-w-lg mt-4'>
         <TextInput id='title' label='Полное название' type='text'
           required={!file}
           placeholder={file && 'Загрузить из файла'}
           value={title}
-          onChange={event => setTitle(event.target.value)}
+          onChange={event => { setTitle(event.target.value); }}
         />
         <TextInput id='alias' label='Сокращение' type='text'
           required={!file}
           value={alias}
           placeholder={file && 'Загрузить из файла'}
           widthClass='max-w-sm'
-          onChange={event => setAlias(event.target.value)}
+          onChange={event => { setAlias(event.target.value); }}
         />
         <TextArea id='comment' label='Комментарий'
           value={comment}
           placeholder={file && 'Загрузить из файла'}
-          onChange={event => setComment(event.target.value)}
+          onChange={event => { setComment(event.target.value); }}
         />
         <Checkbox id='common' label='Общедоступная схема'
           value={common}
-          onChange={event => setCommon(event.target.checked)}
+          onChange={event => { setCommon(event.target.checked); }}
         />
         <FileInput id='trs' label='Загрузить *.trs'
           acceptType='.trs'
           onChange={handleFile}
         />
-        
+
         <div className='flex items-center justify-center py-2 mt-4'>
           <SubmitButton text='Создать схему' loading={loading} />
         </div>
@@ -96,4 +97,4 @@ function RSFormCreatePage() {
   );
 }
 
-export default RSFormCreatePage;
\ No newline at end of file
+export default RSFormCreatePage;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/ConstituentEditor.tsx b/rsconcept/frontend/src/pages/RSFormPage/ConstituentEditor.tsx
index 6b017ff8..9858e918 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/ConstituentEditor.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/ConstituentEditor.tsx
@@ -1,18 +1,19 @@
+import { type AxiosResponse } from 'axios';
 import { useCallback, useLayoutEffect, useState } from 'react';
-import { useRSForm } from '../../context/RSFormContext';
-import { CstType, EditMode, INewCstData } from '../../utils/models';
 import { toast } from 'react-toastify';
-import TextArea from '../../components/Common/TextArea';
-import ExpressionEditor from './ExpressionEditor';
+
 import SubmitButton from '../../components/Common/SubmitButton';
+import TextArea from '../../components/Common/TextArea';
+import { DumpBinIcon, SaveIcon, SmallPlusIcon } from '../../components/Icons';
+import { useRSForm } from '../../context/RSFormContext';
+import { type CstType, EditMode, type INewCstData } from '../../utils/models';
 import { createAliasFor, getCstTypeLabel } from '../../utils/staticUI';
 import ConstituentsSideList from './ConstituentsSideList';
-import { DumpBinIcon, SaveIcon, SmallPlusIcon } from '../../components/Icons';
 import CreateCstModal from './CreateCstModal';
-import { AxiosResponse } from 'axios';
+import ExpressionEditor from './ExpressionEditor';
 
 function ConstituentEditor() {
-  const { 
+  const {
     activeCst, activeID, schema, setActiveID, processing, isEditable,
     cstDelete, cstUpdate, cstCreate
   } = useRSForm();
@@ -30,7 +31,9 @@ function ConstituentEditor() {
 
   useLayoutEffect(() => {
     if (schema?.items && schema?.items.length > 0) {
-      setActiveID((prev) => (prev || schema?.items![0].id));
+      // TODO: figure out why schema.items could be undef?
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      setActiveID((prev) => (prev ?? schema?.items![0].id ?? undefined));
     }
   }, [schema, setActiveID])
 
@@ -38,43 +41,43 @@ function ConstituentEditor() {
     if (activeCst) {
       setAlias(activeCst.alias);
       setType(getCstTypeLabel(activeCst.cstType));
-      setConvention(activeCst.convention || '');
-      setTerm(activeCst.term?.raw || '');
-      setTextDefinition(activeCst.definition?.text?.raw || '');
-      setExpression(activeCst.definition?.formal || '');
-      setTypification(activeCst?.parse?.typification || 'N/A');
+      setConvention(activeCst.convention ?? '');
+      setTerm(activeCst.term?.raw ?? '');
+      setTextDefinition(activeCst.definition?.text?.raw ?? '');
+      setExpression(activeCst.definition?.formal ?? '');
+      setTypification(activeCst?.parse?.typification ?? 'N/A');
     }
   }, [activeCst]);
-  
-  const handleSubmit = 
-  async (event: React.FormEvent<HTMLFormElement>) => {
+
+  const handleSubmit =
+  (event: React.FormEvent<HTMLFormElement>) => {
     event.preventDefault();
     if (!processing) {
       const data = {
-        'alias': alias,
-        'convention': convention,
-        'definition_formal': expression,
-        'definition_text': {
-          'raw': textDefinition,
-          'resolved': '',
+        alias: alias,
+        convention: convention,
+        definition_formal: expression,
+        definition_text: {
+          raw: textDefinition,
+          resolved: ''
         },
-        'term': {
-          'raw': term,
-          'resolved': '',
-          'forms': activeCst?.term?.forms || [],
+        term: {
+          raw: term,
+          resolved: '',
+          forms: activeCst?.term?.forms ?? []
         }
       };
-      cstUpdate(data, () =>  toast.success('Изменения сохранены'));
+      cstUpdate(data, () => toast.success('Изменения сохранены'));
     }
   };
 
   const handleDelete = useCallback(
-  async () => {
+  () => {
     if (!activeID || !schema?.items || !window.confirm('Вы уверены, что хотите удалить конституенту?')) {
       return;
     }
-    const data = { 
-      'items': [{'id': activeID}]
+    const data = {
+      items: [{ id: activeID }]
     }
     const index = schema.items.findIndex((cst) => cst.id === activeID);
     if (index !== -1 && index + 1 < schema.items.length) {
@@ -84,24 +87,23 @@ function ConstituentEditor() {
   }, [activeID, schema, setActiveID, cstDelete]);
 
   const handleAddNew = useCallback(
-  async (csttype?: CstType) => {
+  (csttype?: CstType) => {
     if (!activeID || !schema?.items) {
       return;
     }
     if (!csttype) {
       setShowCstModal(true);
     } else {
-      const data: INewCstData = { 
-        'csttype': csttype,
-        'alias': createAliasFor(csttype, schema!),
-        'insert_after': activeID
+      const data: INewCstData = {
+        csttype: csttype,
+        alias: createAliasFor(csttype, schema),
+        insert_after: activeID
       }
-      cstCreate(data, 
-      async (response: AxiosResponse) => {
-       // navigate(`/rsforms/${schema.id}?tab=${RSFormTabsList.CST_EDIT}&active=${response.data['new_cst']['id']}`);
-        setActiveID(response.data['new_cst']['id']);
-        toast.success(`Конституента добавлена: ${response.data['new_cst']['alias']}`);
-      });      
+      cstCreate(data,
+      (response: AxiosResponse) => {
+        setActiveID(response.data.new_cst.id);
+        toast.success(`Конституента добавлена: ${response.data.new_cst.alias as string}`);
+      });
     }
   }, [activeID, schema, cstCreate, setActiveID]);
 
@@ -113,12 +115,11 @@ function ConstituentEditor() {
     toast.info('Изменение типа в разработке');
   }, []);
 
-
   return (
     <div className='flex items-start w-full gap-2'>
       <CreateCstModal
         show={showCstModal}
-        toggle={() => setShowCstModal(!showCstModal)}
+        toggle={() => { setShowCstModal(!showCstModal); }}
         onCreate={handleAddNew}
         defaultType={activeCst?.cstType as CstType}
       />
@@ -133,8 +134,8 @@ function ConstituentEditor() {
             </button>
           <div className='flex items-start justify-center w-full gap-4'>
             <span className='mr-12'>
-              <label 
-                title='Переименовать конституенту' 
+              <label
+                title='Переименовать конституенту'
                 className='font-semibold underline cursor-pointer'
                 onClick={handleRename}
               >
@@ -143,7 +144,7 @@ function ConstituentEditor() {
               <b className='ml-2'>{alias}</b>
             </span>
             <span>
-              <label 
+              <label
                 title='Изменить тип конституенты'
                 className='font-semibold underline cursor-pointer'
                 onClick={handleChangeType}
@@ -158,9 +159,9 @@ function ConstituentEditor() {
               title='Создать конституенты после данной'
               className='px-1 py-1 font-bold rounded-full whitespace-nowrap disabled:cursor-not-allowed clr-btn-clear'
               disabled={!isEditable}
-              onClick={() => handleAddNew()}
+              onClick={() => { handleAddNew(); }}
             >
-              <SmallPlusIcon size={5} color={isEditable ? 'text-green': ''} />
+              <SmallPlusIcon size={5} color={isEditable ? 'text-green' : ''} />
             </button>
             <button type='button'
               title='Удалить редактируемую конституенту'
@@ -168,7 +169,7 @@ function ConstituentEditor() {
               disabled={!isEditable}
               onClick={handleDelete}
             >
-              <DumpBinIcon size={5} color={isEditable ? 'text-red': ''} />
+              <DumpBinIcon size={5} color={isEditable ? 'text-red' : ''} />
             </button>
           </div>
         </div>
@@ -178,8 +179,8 @@ function ConstituentEditor() {
           value={term}
           disabled={!isEditable}
           spellCheck
-          onChange={event => setTerm(event.target.value)}
-          onFocus={() => setEditMode(EditMode.TEXT)}
+          onChange={event => { setTerm(event.target.value); }}
+          onFocus={() => { setEditMode(EditMode.TEXT); }}
         />
         <TextArea id='typification' label='Типизация'
           rows={1}
@@ -190,9 +191,9 @@ function ConstituentEditor() {
           placeholder='Родоструктурное выражение, задающее формальное определение'
           value={expression}
           disabled={!isEditable}
-          isActive={editMode==='rslang'}
-          toggleEditMode={() => setEditMode(EditMode.RSLANG)}
-          onChange={event => setExpression(event.target.value)}
+          isActive={editMode === 'rslang'}
+          toggleEditMode={() => { setEditMode(EditMode.RSLANG); }}
+          onChange={event => { setExpression(event.target.value); }}
           setValue={setExpression}
           setTypification={setTypification}
         />
@@ -202,8 +203,8 @@ function ConstituentEditor() {
           value={textDefinition}
           disabled={!isEditable}
           spellCheck
-          onChange={event => setTextDefinition(event.target.value)}
-          onFocus={() => setEditMode(EditMode.TEXT)}
+          onChange={event => { setTextDefinition(event.target.value); }}
+          onFocus={() => { setEditMode(EditMode.TEXT); }}
         />
         <TextArea id='convention' label='Конвенция / Комментарий'
           placeholder='Договоренность об интерпретации неопределяемого понятия&#x000D;&#x000A;Комментарий к производному понятию'
@@ -211,8 +212,8 @@ function ConstituentEditor() {
           value={convention}
           disabled={!isEditable}
           spellCheck
-          onChange={event => setConvention(event.target.value)}
-          onFocus={() => setEditMode(EditMode.TEXT)}
+          onChange={event => { setConvention(event.target.value); }}
+          onFocus={() => { setEditMode(EditMode.TEXT); }}
         />
         <div className='flex justify-center w-full mt-2'>
           <SubmitButton
@@ -227,4 +228,4 @@ function ConstituentEditor() {
   );
 }
 
-export default ConstituentEditor;
\ No newline at end of file
+export default ConstituentEditor;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/ConstituentsSideList.tsx b/rsconcept/frontend/src/pages/RSFormPage/ConstituentsSideList.tsx
index d391ec74..ac456ab9 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/ConstituentsSideList.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/ConstituentsSideList.tsx
@@ -1,18 +1,19 @@
-import { useCallback, useState, useMemo, useEffect } from 'react';
-import { useRSForm } from '../../context/RSFormContext';
-import { CstType, IConstituenta, matchConstituenta } from '../../utils/models';
+import { useCallback, useEffect, useMemo, useState } from 'react';
+
 import Checkbox from '../../components/Common/Checkbox';
 import DataTableThemed from '../../components/Common/DataTableThemed';
+import { useRSForm } from '../../context/RSFormContext';
 import useLocalStorage from '../../hooks/useLocalStorage';
+import { CstType, type IConstituenta, matchConstituenta } from '../../utils/models';
 import { extractGlobals } from '../../utils/staticUI';
 
 interface ConstituentsSideListProps {
   expression: string
 }
 
-function ConstituentsSideList({expression}: ConstituentsSideListProps) {
+function ConstituentsSideList({ expression }: ConstituentsSideListProps) {
   const { schema, setActiveID } = useRSForm();
-  const [filteredData, setFilteredData] = useState<IConstituenta[]>(schema?.items || []);
+  const [filteredData, setFilteredData] = useState<IConstituenta[]>(schema?.items ?? []);
   const [filterText, setFilterText] = useLocalStorage('side-filter-text', '')
   const [onlyExpression, setOnlyExpression] = useLocalStorage('side-filter-flag', false);
 
@@ -21,9 +22,9 @@ function ConstituentsSideList({expression}: ConstituentsSideListProps) {
       setFilteredData([]);
     } else if (onlyExpression) {
       const aliases = extractGlobals(expression);
-      let filtered = schema?.items.filter((cst) => aliases.has(cst.alias));
+      const filtered = schema?.items.filter((cst) => aliases.has(cst.alias));
       const names = filtered.map(cst => cst.alias)
-      const diff =  Array.from(aliases).filter(name => names.indexOf(name) < 0);
+      const diff = Array.from(aliases).filter(name => !names.includes(name));
       if (diff.length > 0) {
         diff.forEach(
           (alias, i) => filtered.push({
@@ -42,23 +43,23 @@ function ConstituentsSideList({expression}: ConstituentsSideListProps) {
   }, [filterText, setFilteredData, onlyExpression, expression, schema]);
 
   const handleRowClicked = useCallback(
-    (cst: IConstituenta, event: React.MouseEvent<Element, MouseEvent>) => {
-		if (event.altKey && cst.id > 0) {
+  (cst: IConstituenta, event: React.MouseEvent<Element, MouseEvent>) => {
+    if (event.altKey && cst.id > 0) {
       setActiveID(cst.id);
     }
-	}, [setActiveID]);
+  }, [setActiveID]);
 
   const handleDoubleClick = useCallback(
-    (cst: IConstituenta, event: React.MouseEvent<Element, MouseEvent>) => {
-		if (cst.id > 0) setActiveID(cst.id);
-	}, [setActiveID]);
+  (cst: IConstituenta, event: React.MouseEvent<Element, MouseEvent>) => {
+    if (cst.id > 0) setActiveID(cst.id);
+  }, [setActiveID]);
 
-  const columns = useMemo(() => 
+  const columns = useMemo(() =>
     [
       {
         id: 'id',
         selector: (cst: IConstituenta) => cst.id,
-        omit: true,
+        omit: true
       },
       {
         name: 'ID',
@@ -70,26 +71,27 @@ function ConstituentsSideList({expression}: ConstituentsSideListProps) {
           {
             when: (cst: IConstituenta) => cst.id <= 0,
             classNames: ['bg-[#ffc9c9]', 'dark:bg-[#592b2b]']
-          },
-        ],
+          }
+        ]
       },
       {
         name: 'Описание',
         id: 'description',
-        selector: (cst: IConstituenta) => cst.term?.resolved || cst.definition?.text.resolved || cst.definition?.formal || cst.convention || '',
+        selector: (cst: IConstituenta) =>
+          cst.term?.resolved ?? cst.definition?.text.resolved ?? cst.definition?.formal ?? cst.convention ?? '',
         minWidth: '350px',
         wrap: true,
         conditionalCellStyles: [
           {
             when: (cst: IConstituenta) => cst.id <= 0,
             classNames: ['bg-[#ffc9c9]', 'dark:bg-[#592b2b]']
-          },
-        ],
+          }
+        ]
       },
       {
         name: 'Выражение',
         id: 'expression',
-        selector: (cst: IConstituenta) => cst.definition?.formal || '',
+        selector: (cst: IConstituenta) => cst.definition?.formal ?? '',
         minWidth: '200px',
         hide: 1600,
         grow: 2,
@@ -98,8 +100,8 @@ function ConstituentsSideList({expression}: ConstituentsSideListProps) {
           {
             when: (cst: IConstituenta) => cst.id <= 0,
             classNames: ['bg-[#ffc9c9]', 'dark:bg-[#592b2b]']
-          },
-        ],
+          }
+        ]
       }
     ], []
   );
@@ -112,7 +114,7 @@ function ConstituentsSideList({expression}: ConstituentsSideListProps) {
             className='w-full px-2 outline-none dark:bg-gray-700 hover:text-clip'
             placeholder='текст для фильтрации списка'
             value={filterText}
-            onChange={event => setFilterText(event.target.value)}
+            onChange={event => { setFilterText(event.target.value); }}
             disabled={onlyExpression}
           />
         </div>
@@ -120,7 +122,7 @@ function ConstituentsSideList({expression}: ConstituentsSideListProps) {
           <Checkbox
             label='из выражения'
             value={onlyExpression}
-            onChange={event => setOnlyExpression(event.target.checked)}
+            onChange={event => { setOnlyExpression(event.target.checked); }}
           />
         </div>
       </div>
diff --git a/rsconcept/frontend/src/pages/RSFormPage/ConstituentsTable.tsx b/rsconcept/frontend/src/pages/RSFormPage/ConstituentsTable.tsx
index 432fb7dd..4993baa0 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/ConstituentsTable.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/ConstituentsTable.tsx
@@ -1,22 +1,23 @@
-import { CstType, IConstituenta, INewCstData, ParsingStatus, ValueClass, inferStatus } from '../../utils/models'
+import { type AxiosResponse } from 'axios';
 import { useCallback, useMemo, useState } from 'react';
-import DataTableThemed from '../../components/Common/DataTableThemed';
-import { useRSForm } from '../../context/RSFormContext';
-import Button from '../../components/Common/Button';
-import { ArrowDownIcon, ArrowUpIcon, ArrowsRotateIcon, DumpBinIcon, SmallPlusIcon } from '../../components/Icons';
 import { toast } from 'react-toastify';
+
+import Button from '../../components/Common/Button';
+import DataTableThemed from '../../components/Common/DataTableThemed';
 import Divider from '../../components/Common/Divider';
+import { ArrowDownIcon, ArrowsRotateIcon, ArrowUpIcon, DumpBinIcon, SmallPlusIcon } from '../../components/Icons';
+import { useRSForm } from '../../context/RSFormContext';
+import { useConceptTheme } from '../../context/ThemeContext';
+import { CstType, type IConstituenta, type INewCstData, inferStatus, ParsingStatus, ValueClass } from '../../utils/models'
 import { createAliasFor, getCstTypeLabel, getCstTypePrefix, getStatusInfo, getTypeLabel } from '../../utils/staticUI';
 import CreateCstModal from './CreateCstModal';
-import { AxiosResponse } from 'axios';
-import { useConceptTheme } from '../../context/ThemeContext';
 
 interface ConstituentsTableProps {
   onOpenEdit: (cst: IConstituenta) => void
 }
 
-function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
-  const { 
+function ConstituentsTable({ onOpenEdit }: ConstituentsTableProps) {
+  const {
     schema, isEditable,
     cstCreate, cstDelete, cstMoveTo
   } = useRSForm();
@@ -27,31 +28,31 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
   const [showCstModal, setShowCstModal] = useState(false);
 
   const handleRowClicked = useCallback(
-    (cst: IConstituenta, event: React.MouseEvent<Element, MouseEvent>) => {
-		if (event.altKey) {
+  (cst: IConstituenta, event: React.MouseEvent<Element, MouseEvent>) => {
+    if (event.altKey) {
       onOpenEdit(cst);
     }
-	}, [onOpenEdit]);
+  }, [onOpenEdit]);
 
   const handleSelectionChange = useCallback(
-    ({selectedRows}: {
-      allSelected: boolean;
-      selectedCount: number;
-      selectedRows: IConstituenta[];
+    ({ selectedRows }: {
+      allSelected: boolean
+      selectedCount: number
+      selectedRows: IConstituenta[]
     }) => {
     setSelected(selectedRows.map((cst) => cst.id));
   }, [setSelected]);
-  
+
   // Delete selected constituents
   const handleDelete = useCallback(() => {
     if (!schema?.items || !window.confirm('Вы уверены, что хотите удалить выбранные конституенты?')) {
       return;
     }
-    const data = { 
-      'items': selected.map(id => { return {'id': id }; }),
+    const data = {
+      items: selected.map(id => { return { id }; })
     }
-    const deletedNamed = selected.map(id => schema.items?.find((cst) => cst.id === id)?.alias);
-    cstDelete(data, () => toast.success(`Конституенты удалены: ${deletedNamed}`));
+    const deletedNames = selected.map(id => schema.items?.find((cst) => cst.id === id)?.alias);
+    cstDelete(data, () => toast.success(`Конституенты удалены: ${deletedNames.toString()}`));
   }, [selected, schema?.items, cstDelete]);
 
   // Move selected cst up
@@ -61,7 +62,7 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
       return;
     }
     const currentIndex = schema.items.reduce((prev, cst, index) => {
-      if (selected.indexOf(cst.id) < 0) {
+      if (!selected.includes(cst.id)) {
         return prev;
       } else if (prev === -1) {
         return index;
@@ -69,23 +70,22 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
       return Math.min(prev, index);
     }, -1);
     const insertIndex = Math.max(0, currentIndex - 1) + 1
-    const data = { 
-      'items': selected.map(id => { return {'id': id }; }),
-      'move_to': insertIndex
+    const data = {
+      items: selected.map(id => { return { id }; }),
+      move_to: insertIndex
     }
-    cstMoveTo(data);    
+    cstMoveTo(data);
   }, [selected, schema?.items, cstMoveTo]);
 
-  
   // Move selected cst down
   const handleMoveDown = useCallback(
-    async () => {
+    () => {
     if (!schema?.items || selected.length === 0) {
       return;
     }
     let count = 0;
     const currentIndex = schema.items.reduce((prev, cst, index) => {
-      if (selected.indexOf(cst.id) < 0) {
+      if (!selected.includes(cst.id)) {
         return prev;
       } else {
         count += 1;
@@ -96,32 +96,35 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
       }
     }, -1);
     const insertIndex = Math.min(schema.items.length - 1, currentIndex - count + 2) + 1
-    const data = { 
-      'items': selected.map(id => { return {'id': id }; }),
-      'move_to': insertIndex
+    const data = {
+      items: selected.map(id => { return { id }; }),
+      move_to: insertIndex
     }
-    cstMoveTo(data);    
+    cstMoveTo(data);
   }, [selected, schema?.items, cstMoveTo]);
 
   // Generate new names for all constituents
   const handleReindex = useCallback(() => {
     toast.info('Переиндексация');
   }, []);
-  
+
   // Add new constituent
   const handleAddNew = useCallback((csttype?: CstType) => {
+    if (!schema) {
+      return;
+    }
     if (!csttype) {
       setShowCstModal(true);
     } else {
-      let data: INewCstData = { 
-        'csttype': csttype,
-        'alias': createAliasFor(csttype, schema!)
+      const data: INewCstData = {
+        csttype,
+        alias: createAliasFor(csttype, schema)
       }
       if (selected.length > 0) {
-        data['insert_after'] = selected[selected.length - 1]
+        data.insert_after = selected[selected.length - 1]
       }
       cstCreate(data, (response: AxiosResponse) =>
-        toast.success(`Добавлена конституента ${response.data['new_cst']['alias']}`));      
+        toast.success(`Добавлена конституента ${response.data.new_cst.alias as string}`));
     }
   }, [schema, selected, cstCreate]);
 
@@ -133,25 +136,25 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
     if (!isEditable || selected.length === 0) {
       return;
     }
-    switch(event.key) {
+    switch (event.key) {
     case 'ArrowUp': handleMoveUp(); return;
-    case 'ArrowDown': handleMoveDown(); return;
+    case 'ArrowDown': handleMoveDown();
     }
   }, [isEditable, selected, handleMoveUp, handleMoveDown]);
-  
-  const columns = useMemo(() => 
+
+  const columns = useMemo(() =>
     [
       {
         name: 'ID',
         id: 'id',
         selector: (cst: IConstituenta) => cst.id,
-        omit: true,
+        omit: true
       },
       {
         name: 'Статус',
         id: 'status',
-        cell: (cst: IConstituenta) => 
-          <div style={{fontSize: 12}}>
+        cell: (cst: IConstituenta) =>
+          <div style={{ fontSize: 12 }}>
             {getStatusInfo(inferStatus(cst.parse?.status, cst.parse?.valueClass)).text}
           </div>,
         width: '80px',
@@ -170,8 +173,8 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
           {
             when: (cst: IConstituenta) => cst.parse?.status === ParsingStatus.VERIFIED && cst.parse?.valueClass === ValueClass.PROPERTY,
             classNames: ['bg-[#a5e9fa]', 'dark:bg-[#36899e]']
-          },
-        ],
+          }
+        ]
       },
       {
         name: 'Имя',
@@ -192,77 +195,82 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
           {
             when: (cst: IConstituenta) => cst.parse?.status === ParsingStatus.VERIFIED && cst.parse?.valueClass === ValueClass.PROPERTY,
             classNames: ['bg-[#a5e9fa]', 'dark:bg-[#36899e]']
-          },
-        ],
+          }
+        ]
       },
       {
         name: 'Тип',
         id: 'type',
-        cell: (cst: IConstituenta) => <div style={{fontSize: 12}}>{getTypeLabel(cst)}</div>,
+        cell: (cst: IConstituenta) => <div style={{ fontSize: 12 }}>{getTypeLabel(cst)}</div>,
         width: '140px',
         minWidth: '100px',
         maxWidth: '140px',
         wrap: true,
         reorder: true,
-        hide: 1600,
+        hide: 1600
       },
       {
         name: 'Термин',
         id: 'term',
-        selector: (cst: IConstituenta) => cst.term?.resolved || cst.term?.raw || '',
+        selector: (cst: IConstituenta) => cst.term?.resolved ?? cst.term?.raw ?? '',
         width: '350px',
         minWidth: '150px',
         maxWidth: '350px',
         wrap: true,
-        reorder: true,
+        reorder: true
       },
       {
         name: 'Формальное определение',
         id: 'expression',
-        selector: (cst: IConstituenta) => cst.definition?.formal || '',
+        selector: (cst: IConstituenta) => cst.definition?.formal ?? '',
         minWidth: '300px',
         maxWidth: '500px',
         grow: 2,
         wrap: true,
-        reorder: true,
+        reorder: true
       },
       {
         name: 'Текстовое определение',
         id: 'definition',
         cell: (cst: IConstituenta) => (
-          <div style={{fontSize: 12}}>
-            {cst.definition?.text.resolved || cst.definition?.text.raw || ''}
+          <div style={{ fontSize: 12 }}>
+            {cst.definition?.text.resolved ?? cst.definition?.text.raw ?? ''}
           </div>
         ),
         minWidth: '200px',
         grow: 2,
         wrap: true,
-        reorder: true,
+        reorder: true
       },
       {
         name: 'Конвенция / Комментарий',
         id: 'convention',
-        cell: (cst: IConstituenta) => <div style={{fontSize: 12}}>{cst.convention || ''}</div>,
+        cell: (cst: IConstituenta) => <div style={{ fontSize: 12 }}>{cst.convention ?? ''}</div>,
         minWidth: '100px',
         wrap: true,
         reorder: true,
-        hide: 1800,
-      },
+        hide: 1800
+      }
     ], []
   );
 
   return (<>
     <CreateCstModal
       show={showCstModal}
-      toggle={() => setShowCstModal(!showCstModal)}
+      toggle={() => { setShowCstModal(!showCstModal); }}
       onCreate={handleAddNew}
     />
     <div className='w-full'>
-      <div 
-        className={'flex justify-start w-full gap-1 px-2 py-1 border-y items-center h-[2.2rem] clr-app' 
-          + (!noNavigation ? ' sticky z-10 top-[4rem]' : ' sticky z-10 top-[0rem]')}
+      <div
+        className={'flex justify-start w-full gap-1 px-2 py-1 border-y items-center h-[2.2rem] clr-app' +
+          (!noNavigation ? ' sticky z-10 top-[4rem]' : ' sticky z-10 top-[0rem]')}
       >
-        <div className='mr-3 whitespace-nowrap'>Выбраны <span className='ml-2'><b>{selected.length}</b> из {schema?.stats?.count_all || 0}</span></div>
+        <div className='mr-3 whitespace-nowrap'>
+          Выбраны
+          <span className='ml-2'>
+            <b>{selected.length}</b> из {schema?.stats?.count_all ?? 0}
+          </span>
+        </div>
         {isEditable && <div className='flex justify-start w-full gap-1'>
           <Button
             tooltip='Переместить вверх'
@@ -280,7 +288,7 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
           />
           <Button
             tooltip='Удалить выбранные'
-            icon={<DumpBinIcon color={!nothingSelected ? 'text-red': ''} size={6}/>}
+            icon={<DumpBinIcon color={!nothingSelected ? 'text-red' : ''} size={6}/>}
             disabled={nothingSelected}
             dense
             onClick={handleDelete}
@@ -296,23 +304,23 @@ function ConstituentsTable({onOpenEdit}: ConstituentsTableProps) {
             tooltip='Новая конституента'
             icon={<SmallPlusIcon color='text-green' size={6}/>}
             dense
-            onClick={() => handleAddNew()}
+            onClick={() => { handleAddNew(); }}
           />
           {(Object.values(CstType)).map(
             (typeStr) => {
               const type = typeStr as CstType;
-              return <Button
+              return <Button key={type}
                 text={`${getCstTypePrefix(type)}`}
                 tooltip={getCstTypeLabel(type)}
                 dense
-                onClick={() =>handleAddNew(type)}
+                onClick={() => { handleAddNew(type); }}
               />;
           })}
         </div>}
       </div>
       <div className='w-full h-full' onKeyDown={handleTableKey} tabIndex={0}>
       <DataTableThemed
-        data={schema!.items!}
+        data={schema?.items ?? []}
         columns={columns}
         keyField='id'
         noDataComponent={
diff --git a/rsconcept/frontend/src/pages/RSFormPage/CreateCstModal.tsx b/rsconcept/frontend/src/pages/RSFormPage/CreateCstModal.tsx
index be5677e7..57a09c0e 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/CreateCstModal.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/CreateCstModal.tsx
@@ -1,8 +1,9 @@
-import Modal from '../../components/Common/Modal';
-import { CstType } from '../../utils/models';
-import Select from 'react-select';
-import { CstTypeSelector, getCstTypeLabel } from '../../utils/staticUI';
 import { useEffect, useState } from 'react';
+import Select from 'react-select';
+
+import Modal from '../../components/Common/Modal';
+import { type CstType } from '../../utils/models';
+import { CstTypeSelector, getCstTypeLabel } from '../../utils/staticUI';
 
 interface CreateCstModalProps {
   show: boolean
@@ -11,9 +12,9 @@ interface CreateCstModalProps {
   onCreate: (type: CstType) => void
 }
 
-function CreateCstModal({show, toggle, defaultType, onCreate}: CreateCstModalProps) {
+function CreateCstModal({ show, toggle, defaultType, onCreate }: CreateCstModalProps) {
   const [validated, setValidated] = useState(false);
-  const [selectedType, setSelectedType] = useState<CstType|undefined>(undefined);
+  const [selectedType, setSelectedType] = useState<CstType | undefined>(undefined);
 
   const handleSubmit = () => {
     if (selectedType) onCreate(selectedType);
@@ -29,22 +30,22 @@ function CreateCstModal({show, toggle, defaultType, onCreate}: CreateCstModalPro
   );
 
   return (
-    <Modal 
+    <Modal
       title='Создание конституенты'
       show={show}
       toggle={toggle}
       canSubmit={validated}
       onSubmit={handleSubmit}
     >
-      <Select 
+      <Select
         options={CstTypeSelector}
         placeholder='Выберите тип'
         filterOption={null}
-        value={selectedType && {value: selectedType, label: getCstTypeLabel(selectedType)}}
-        onChange={(data) => setSelectedType(data?.value)}
+        value={selectedType && { value: selectedType, label: getCstTypeLabel(selectedType) }}
+        onChange={(data) => { setSelectedType(data?.value); }}
       />
     </Modal>
   )
 }
 
-export default CreateCstModal;
\ No newline at end of file
+export default CreateCstModal;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/ExpressionEditor.tsx b/rsconcept/frontend/src/pages/RSFormPage/ExpressionEditor.tsx
index b92c2058..a63c8c08 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/ExpressionEditor.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/ExpressionEditor.tsx
@@ -1,17 +1,18 @@
+import { type AxiosResponse } from 'axios';
 import { useCallback, useLayoutEffect, useMemo, useRef, useState } from 'react';
+import { toast } from 'react-toastify';
+
 import Button from '../../components/Common/Button';
 import Label from '../../components/Common/Label';
-import { useRSForm } from '../../context/RSFormContext';
-import { toast } from 'react-toastify';
-import RSTokenButton from './RSTokenButton';
-import { CstType, TokenID } from '../../utils/models';
-import useCheckExpression from '../../hooks/useCheckExpression';
-import ParsingResult from './ParsingResult';
 import { Loader } from '../../components/Common/Loader';
-import StatusBar from './StatusBar';
-import { AxiosResponse } from 'axios';
-import { TextWrapper, getSymbolSubstitute } from './textEditing';
+import { useRSForm } from '../../context/RSFormContext';
+import useCheckExpression from '../../hooks/useCheckExpression';
+import { CstType, TokenID } from '../../utils/models';
+import ParsingResult from './ParsingResult';
 import RSLocalButton from './RSLocalButton';
+import RSTokenButton from './RSTokenButton';
+import StatusBar from './StatusBar';
+import { getSymbolSubstitute, TextWrapper } from './textEditing';
 
 interface ExpressionEditorProps {
   id: string
@@ -19,7 +20,7 @@ interface ExpressionEditorProps {
   isActive: boolean
   disabled?: boolean
   placeholder?: string
-  value: any
+  value: string
   onChange: (event: React.ChangeEvent<HTMLTextAreaElement>) => void
   toggleEditMode: () => void
   setTypification: (typificaiton: string) => void
@@ -32,7 +33,7 @@ function ExpressionEditor({
 }: ExpressionEditorProps) {
   const { schema, activeCst } = useRSForm();
   const [isModified, setIsModified] = useState(false);
-  const { parseData, checkExpression, resetParse, loading } = useCheckExpression({schema: schema});
+  const { parseData, checkExpression, resetParse, loading } = useCheckExpression({ schema });
   const expressionCtrl = useRef<HTMLTextAreaElement>(null);
 
   useLayoutEffect(() => {
@@ -41,14 +42,17 @@ function ExpressionEditor({
   }, [activeCst, resetParse]);
 
   const handleCheckExpression = useCallback(() => {
+    if (!activeCst) {
+      return;
+    }
     const prefix = activeCst?.alias + (activeCst?.cstType === CstType.STRUCTURED ? '::=' : ':==');
     const expression = prefix + value;
     checkExpression(expression, (response: AxiosResponse) => {
       // TODO: update cursor position
       setIsModified(false);
-      setTypification(response.data['typification']);
+      setTypification(response.data.typification);
       toast.success('проверка завершена');
-    });
+    }).catch(console.error);
   }, [value, checkExpression, activeCst, setTypification]);
 
   const handleEdit = useCallback((id: TokenID, key?: string) => {
@@ -56,9 +60,9 @@ function ExpressionEditor({
       toast.error('Нет доступа к полю редактирования формального выражения');
       return;
     }
-    let text = new TextWrapper(expressionCtrl.current);
+    const text = new TextWrapper(expressionCtrl.current);
     if (id === TokenID.ID_LOCAL) {
-      text.insertChar(key!);
+      text.insertChar(key ?? 'unknown_local');
     } else {
       text.insertToken(id);
     }
@@ -74,8 +78,11 @@ function ExpressionEditor({
   }, [setIsModified, onChange]);
 
   const handleInput = useCallback((event: React.KeyboardEvent<HTMLTextAreaElement>) => {
+    if (!expressionCtrl.current) {
+      return;
+    }
     if (event.altKey) {
-      let text = new TextWrapper(expressionCtrl.current!);
+      const text = new TextWrapper(expressionCtrl.current);
       if (text.processAltKey(event.key)) {
         event.preventDefault();
         text.finalize();
@@ -86,7 +93,7 @@ function ExpressionEditor({
       const newSymbol = getSymbolSubstitute(event.key);
       if (newSymbol) {
         event.preventDefault();
-        let text = new TextWrapper(expressionCtrl.current!);
+        const text = new TextWrapper(expressionCtrl.current);
         text.replaceWith(newSymbol);
         text.finalize();
         setValue(text.value);
@@ -99,7 +106,7 @@ function ExpressionEditor({
     toggleEditMode()
   }, [toggleEditMode]);
 
-  const EditButtons = useMemo( () => {
+  const EditButtons = useMemo(() => {
     return (<div className='flex items-center justify-between w-full'>
     <div className='text-sm w-fit'>
       <div className='flex justify-start'>
@@ -112,7 +119,7 @@ function ExpressionEditor({
         <RSTokenButton id={TokenID.REDUCE} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.CARD} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.BOOL} onInsert={handleEdit}/>
-        
+
       </div>
       <div className='flex justify-start'>
         <RSTokenButton id={TokenID.BOOLEAN} onInsert={handleEdit}/>
@@ -126,7 +133,7 @@ function ExpressionEditor({
         <RSTokenButton id={TokenID.AND} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.IMPLICATION} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.SET_MINUS} onInsert={handleEdit}/>
-        <RSTokenButton id={TokenID.PUNC_ITERATE} onInsert={handleEdit}/>      
+        <RSTokenButton id={TokenID.PUNC_ITERATE} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.SUBSET} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.DEBOOL} onInsert={handleEdit}/>
       </div>
@@ -134,7 +141,7 @@ function ExpressionEditor({
         <RSTokenButton id={TokenID.DECART} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.PUNC_SL} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.UNION} onInsert={handleEdit}/>
-        <RSTokenButton id={TokenID.LIT_INTSET} onInsert={handleEdit}/>  
+        <RSTokenButton id={TokenID.LIT_INTSET} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.EXISTS} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.NOTEQUAL} onInsert={handleEdit}/>
         <RSTokenButton id={TokenID.NOTIN} onInsert={handleEdit}/>
@@ -176,10 +183,10 @@ function ExpressionEditor({
     </div>
     </div>);
   }, [handleEdit])
-  
+
   return (
     <div className='flex flex-col items-start [&:not(:first-child)]:mt-3 w-full'>
-      <Label 
+      <Label
         text={label}
         required={false}
         htmlFor={id}
@@ -220,4 +227,4 @@ function ExpressionEditor({
   );
 }
 
-export default ExpressionEditor;
\ No newline at end of file
+export default ExpressionEditor;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/ParsingResult.tsx b/rsconcept/frontend/src/pages/RSFormPage/ParsingResult.tsx
index 0000332f..b46e633d 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/ParsingResult.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/ParsingResult.tsx
@@ -4,7 +4,7 @@ interface ParsingResultProps {
   data?: any
 }
 
-function ParsingResult({data}: ParsingResultProps) {
+function ParsingResult({ data }: ParsingResultProps) {
   return (
     <div className='w-full px-3 py-2 mt-2 border'>
       <PrettyJson data={data} />
@@ -18,4 +18,4 @@ function ParsingResult({data}: ParsingResultProps) {
   )
 }
 
-export default ParsingResult;
\ No newline at end of file
+export default ParsingResult;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/RSFormCard.tsx b/rsconcept/frontend/src/pages/RSFormPage/RSFormCard.tsx
index b3bdbb02..1baf09db 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/RSFormCard.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/RSFormCard.tsx
@@ -1,25 +1,26 @@
+import { useCallback, useEffect, useState } from 'react';
 import { useIntl } from 'react-intl';
+import { useNavigate } from 'react-router-dom';
+import { toast } from 'react-toastify';
+
+import Button from '../../components/Common/Button';
 import Checkbox from '../../components/Common/Checkbox';
 import SubmitButton from '../../components/Common/SubmitButton';
 import TextArea from '../../components/Common/TextArea';
 import TextInput from '../../components/Common/TextInput';
-import { useRSForm } from '../../context/RSFormContext';
-import { useCallback, useEffect, useState } from 'react';
-import Button from '../../components/Common/Button';
 import { CrownIcon, DownloadIcon, DumpBinIcon, SaveIcon, ShareIcon } from '../../components/Icons';
-import { useUsers } from '../../context/UsersContext';
-import { useNavigate } from 'react-router-dom';
-import { toast } from 'react-toastify';
 import { useAuth } from '../../context/AuthContext';
+import { useRSForm } from '../../context/RSFormContext';
+import { useUsers } from '../../context/UsersContext';
 import { claimOwnershipProc, deleteRSFormProc, downloadRSFormProc, shareCurrentURLProc } from '../../utils/procedures';
 
 function RSFormCard() {
   const navigate = useNavigate();
   const intl = useIntl();
   const { getUserLabel } = useUsers();
-  const { 
-    schema, update, download, 
-    isEditable, isOwned, isClaimable, processing, destroy, claim 
+  const {
+    schema, update, download,
+    isEditable, isOwned, isClaimable, processing, destroy, claim
   } = useRSForm();
   const { user } = useAuth();
 
@@ -29,28 +30,30 @@ function RSFormCard() {
   const [common, setCommon] = useState(false);
 
   useEffect(() => {
-    setTitle(schema!.title)
-    setAlias(schema!.alias)
-    setComment(schema!.comment)
-    setCommon(schema!.is_common)
+    setTitle(schema?.title ?? '');
+    setAlias(schema?.alias ?? '');
+    setComment(schema?.comment ?? '');
+    setCommon(schema?.is_common ?? false);
   }, [schema]);
-  
+
   const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
     event.preventDefault();
     const data = {
-      'title': title,
-      'alias': alias,
-      'comment': comment,
-      'is_common': common,
+      title,
+      alias,
+      comment,
+      is_common: common
     };
+    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     update(data, () => toast.success('Изменения сохранены'));
   };
 
-  const handleDelete = 
-    useCallback(() => deleteRSFormProc(destroy, navigate), [destroy, navigate]);
+  const handleDelete =
+    useCallback(() => { deleteRSFormProc(destroy, navigate); }, [destroy, navigate]);
 
   const handleDownload = useCallback(() => {
-    const fileName = (schema?.alias || 'Schema') + '.trs';
+    const fileName = (schema?.alias ?? 'Schema') + '.trs';
+    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     downloadRSFormProc(download, fileName);
   }, [download, schema?.alias]);
 
@@ -60,62 +63,62 @@ function RSFormCard() {
         required
         value={title}
         disabled={!isEditable}
-        onChange={event => setTitle(event.target.value)}
+        onChange={event => { setTitle(event.target.value); }}
       />
       <TextInput id='alias' label='Сокращение' type='text'
         required
         value={alias}
         disabled={!isEditable}
         widthClass='max-w-sm'
-        onChange={event => setAlias(event.target.value)}
+        onChange={event => { setAlias(event.target.value); }}
       />
       <TextArea id='comment' label='Комментарий'
         value={comment}
         disabled={!isEditable}
-        onChange={event => setComment(event.target.value)}
+        onChange={event => { setComment(event.target.value); }}
       />
       <Checkbox id='common' label='Общедоступная схема'
         value={common}
         disabled={!isEditable}
-        onChange={event => setCommon(event.target.checked)}
+        onChange={event => { setCommon(event.target.checked); }}
       />
-      
+
       <div className='flex items-center justify-between gap-1 py-2 mt-2'>
         <SubmitButton
-          text='Сохранить изменения' 
+          text='Сохранить изменения'
           loading={processing}
           disabled={!isEditable || processing}
           icon={<SaveIcon size={6} />}
         />
         <div className='flex justify-end gap-1'>
-          <Button 
+          <Button
             tooltip='Поделиться схемой'
             icon={<ShareIcon color='text-primary'/>}
             onClick={shareCurrentURLProc}
           />
-          <Button 
+          <Button
             disabled={processing}
             tooltip='Скачать TRS файл'
             icon={<DownloadIcon color='text-primary'/>}
             loading={processing}
             onClick={handleDownload}
           />
-          <Button 
+          <Button
             tooltip={isClaimable ? 'Стать владельцем' : 'Вы уже являетесь владельцем' }
             disabled={!isClaimable || processing || !user}
             icon={<CrownIcon color={isOwned ? '' : 'text-green'}/>}
-            onClick={() => claimOwnershipProc(claim)}
+            onClick={() => { claimOwnershipProc(claim); }}
           />
-          <Button 
+          <Button
             tooltip={ isEditable ? 'Удалить схему' : 'Вы не можете редактировать данную схему'}
             disabled={!isEditable || processing}
-            icon={<DumpBinIcon color={isEditable ? 'text-red': ''} />}
+            icon={<DumpBinIcon color={isEditable ? 'text-red' : ''} />}
             loading={processing}
             onClick={handleDelete}
           />
         </div>
       </div>
-      
+
       <div className='flex justify-start mt-2'>
         <label className='font-semibold'>Владелец:</label>
         <span className='min-w-[200px] ml-2 overflow-ellipsis overflow-hidden whitespace-nowrap'>
@@ -124,14 +127,14 @@ function RSFormCard() {
       </div>
       <div className='flex justify-start mt-2'>
         <label className='font-semibold'>Дата обновления:</label>
-        <span className='ml-2'>{new Date(schema!.time_update).toLocaleString(intl.locale)}</span>
+        <span className='ml-2'>{schema && new Date(schema?.time_update).toLocaleString(intl.locale)}</span>
       </div>
       <div className='flex justify-start mt-2'>
         <label className='font-semibold'>Дата создания:</label>
-        <span className='ml-8'>{new Date(schema!.time_create).toLocaleString(intl.locale)}</span>
+        <span className='ml-8'>{schema && new Date(schema?.time_create).toLocaleString(intl.locale)}</span>
       </div>
     </form>
   );
 }
 
-export default RSFormCard;
\ No newline at end of file
+export default RSFormCard;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/RSFormStats.tsx b/rsconcept/frontend/src/pages/RSFormPage/RSFormStats.tsx
index 3f9b325a..5f784e90 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/RSFormStats.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/RSFormStats.tsx
@@ -1,13 +1,13 @@
 import Card from '../../components/Common/Card';
 import Divider from '../../components/Common/Divider';
 import LabeledText from '../../components/Common/LabeledText';
-import { IRSFormStats } from '../../utils/models';
+import { type IRSFormStats } from '../../utils/models';
 
 interface RSFormStatsProps {
   stats: IRSFormStats
 }
 
-function RSFormStats({stats}: RSFormStatsProps) {  
+function RSFormStats({ stats }: RSFormStatsProps) {
   return (
     <Card>
       <LabeledText id='count_all'
@@ -78,4 +78,4 @@ function RSFormStats({stats}: RSFormStatsProps) {
   );
 }
 
-export default RSFormStats;
\ No newline at end of file
+export default RSFormStats;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/RSFormTabs.tsx b/rsconcept/frontend/src/pages/RSFormPage/RSFormTabs.tsx
index 9b4eabd6..35a6bfe8 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/RSFormTabs.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/RSFormTabs.tsx
@@ -1,15 +1,16 @@
-import { Tabs, TabList, TabPanel } from 'react-tabs';
-import ConstituentsTable from './ConstituentsTable';
-import { IConstituenta } from '../../utils/models';
-import { useRSForm } from '../../context/RSFormContext';
 import { useEffect, useLayoutEffect, useState } from 'react';
-import ConceptTab from '../../components/Common/ConceptTab';
-import RSFormCard from './RSFormCard';
-import { Loader } from '../../components/Common/Loader';
+import { TabList, TabPanel, Tabs } from 'react-tabs';
+
 import BackendError from '../../components/BackendError';
-import ConstituentEditor from './ConstituentEditor';
-import RSFormStats from './RSFormStats';
+import ConceptTab from '../../components/Common/ConceptTab';
+import { Loader } from '../../components/Common/Loader';
+import { useRSForm } from '../../context/RSFormContext';
 import useLocalStorage from '../../hooks/useLocalStorage';
+import { type IConstituenta } from '../../utils/models';
+import ConstituentEditor from './ConstituentEditor';
+import ConstituentsTable from './ConstituentsTable';
+import RSFormCard from './RSFormCard';
+import RSFormStats from './RSFormStats';
 import TablistTools from './TablistTools';
 
 export enum RSFormTabsList {
@@ -19,7 +20,7 @@ export enum RSFormTabsList {
 }
 
 function RSFormTabs() {
-  const { setActiveID, activeCst, activeID, error, schema, loading } = useRSForm();
+  const { setActiveID, activeID, error, schema, loading } = useRSForm();
   const [tabIndex, setTabIndex] = useLocalStorage('rsform_edit_tab', RSFormTabsList.CARD);
   const [init, setInit] = useState(false);
 
@@ -37,7 +38,7 @@ function RSFormTabs() {
     if (schema) {
       const url = new URL(window.location.href);
       const activeQuery = url.searchParams.get('active');
-      const activeCst = schema?.items?.find((cst) => cst.id === Number(activeQuery)) || undefined;
+      const activeCst = schema?.items?.find((cst) => cst.id === Number(activeQuery));
       setActiveID(activeCst?.id);
       setInit(true);
     }
@@ -52,7 +53,7 @@ function RSFormTabs() {
   useEffect(() => {
     if (init) {
       const url = new URL(window.location.href);
-      let currentActive = url.searchParams.get('active');
+      const currentActive = url.searchParams.get('active');
       const currentTab = url.searchParams.get('tab');
       const saveHistory = tabIndex === RSFormTabsList.CST_EDIT && currentActive !== String(activeID);
       if (currentTab !== String(tabIndex)) {
@@ -78,7 +79,7 @@ function RSFormTabs() {
     { loading && <Loader /> }
     { error && <BackendError error={error} />}
     { schema && !loading &&
-    <Tabs 
+    <Tabs
       selectedIndex={tabIndex}
       onSelect={onSelectTab}
       defaultFocus={true}
@@ -89,7 +90,7 @@ function RSFormTabs() {
         <ConceptTab>Паспорт схемы</ConceptTab>
         <ConceptTab className='border-x-2 clr-border min-w-[10rem] flex justify-between gap-2'>
           <span>Конституенты</span>
-          <span>{`${schema.stats?.count_errors} | ${schema.stats?.count_all}`}</span> 
+          <span>{`${schema.stats?.count_errors ?? 0} | ${schema.stats?.count_all ?? 0}`}</span>
         </ConceptTab>
         <ConceptTab>Редактор</ConceptTab>
       </TabList>
@@ -111,4 +112,4 @@ function RSFormTabs() {
   </div>);
 }
 
-export default RSFormTabs;
\ No newline at end of file
+export default RSFormTabs;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/RSLocalButton.tsx b/rsconcept/frontend/src/pages/RSFormPage/RSLocalButton.tsx
index 37d19e10..d05ec7db 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/RSLocalButton.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/RSLocalButton.tsx
@@ -1,18 +1,18 @@
 import { TokenID } from '../../utils/models'
 
-interface  RSLocalButtonProps {
+interface RSLocalButtonProps {
   text: string
   tooltip: string
   disabled?: boolean
   onInsert: (token: TokenID, key?: string) => void
 }
 
-function RSLocalButton({text, tooltip, disabled, onInsert}: RSLocalButtonProps) {
+function RSLocalButton({ text, tooltip, disabled, onInsert }: RSLocalButtonProps) {
   return (
     <button
       type='button'
       disabled={disabled}
-      onClick={() => onInsert(TokenID.ID_LOCAL, text)}
+      onClick={() => { onInsert(TokenID.ID_LOCAL, text); }}
       title={tooltip}
       tabIndex={-1}
       className='w-[1.5rem] h-7 cursor-pointer border rounded-none clr-btn-clear'
@@ -22,4 +22,4 @@ function RSLocalButton({text, tooltip, disabled, onInsert}: RSLocalButtonProps)
   );
 }
 
-export default RSLocalButton;
\ No newline at end of file
+export default RSLocalButton;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/RSTokenButton.tsx b/rsconcept/frontend/src/pages/RSFormPage/RSTokenButton.tsx
index c22d48c5..14c42cb8 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/RSTokenButton.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/RSTokenButton.tsx
@@ -1,20 +1,20 @@
-import { TokenID } from '../../utils/models'
+import { type TokenID } from '../../utils/models'
 import { getRSButtonData } from '../../utils/staticUI'
 
-interface  RSTokenButtonProps {
+interface RSTokenButtonProps {
   id: TokenID
   disabled?: boolean
   onInsert: (token: TokenID, key?: string) => void
 }
 
-function RSTokenButton({id, disabled, onInsert}: RSTokenButtonProps) {
+function RSTokenButton({ id, disabled, onInsert }: RSTokenButtonProps) {
   const data = getRSButtonData(id);
   const width = data.text.length > 3 ? 'w-[4rem]' : 'w-[2rem]';
   return (
     <button
       type='button'
       disabled={disabled}
-      onClick={() => onInsert(id)}
+      onClick={() => { onInsert(id); }}
       title={data.tooltip}
       tabIndex={-1}
       className={`px-1 cursor-pointer border rounded-none h-7 ${width} clr-btn-clear`}
@@ -24,4 +24,4 @@ function RSTokenButton({id, disabled, onInsert}: RSTokenButtonProps) {
   );
 }
 
-export default RSTokenButton;
\ No newline at end of file
+export default RSTokenButton;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/StatusBar.tsx b/rsconcept/frontend/src/pages/RSFormPage/StatusBar.tsx
index 139d66b2..fd6824fd 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/StatusBar.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/StatusBar.tsx
@@ -1,5 +1,6 @@
 import { useMemo } from 'react';
-import { ExpressionStatus, IConstituenta, ParsingStatus, inferStatus } from '../../utils/models';
+
+import { ExpressionStatus, type IConstituenta, inferStatus, ParsingStatus } from '../../utils/models';
 import { getStatusInfo } from '../../utils/staticUI';
 
 interface StatusBarProps {
@@ -8,14 +9,14 @@ interface StatusBarProps {
   constituenta?: IConstituenta
 }
 
-function StatusBar({isModified, constituenta, parseData}: StatusBarProps) {
+function StatusBar({ isModified, constituenta, parseData }: StatusBarProps) {
   const status = useMemo(() => {
     if (isModified) {
       return ExpressionStatus.UNKNOWN;
     }
     if (parseData) {
-      const parse = parseData['parseResult'] ? ParsingStatus.VERIFIED : ParsingStatus.INCORRECT;
-      return inferStatus(parse, parseData['valueClass']);
+      const parse = parseData.parseResult ? ParsingStatus.VERIFIED : ParsingStatus.INCORRECT;
+      return inferStatus(parse, parseData.valueClass);
     }
     return inferStatus(constituenta?.parse?.status, constituenta?.parse?.valueClass);
   }, [isModified, constituenta, parseData]);
@@ -29,4 +30,4 @@ function StatusBar({isModified, constituenta, parseData}: StatusBarProps) {
   )
 }
 
-export default StatusBar;
\ No newline at end of file
+export default StatusBar;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/TablistTools.tsx b/rsconcept/frontend/src/pages/RSFormPage/TablistTools.tsx
index 9a46d53e..d3857c7c 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/TablistTools.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/TablistTools.tsx
@@ -1,20 +1,22 @@
 import { useCallback } from 'react';
-import Button from '../../components/Common/Button';
-import Dropdown from '../../components/Common/Dropdown';
-import { CloneIcon, CrownIcon, DownloadIcon, DumpBinIcon, EyeIcon, EyeOffIcon, MenuIcon, PenIcon, ShareIcon, UploadIcon } from '../../components/Icons';
-import { useRSForm } from '../../context/RSFormContext';
-import useDropdown from '../../hooks/useDropdown';
-import DropdownButton from '../../components/Common/DropdownButton';
-import Checkbox from '../../components/Common/Checkbox';
-import { useAuth } from '../../context/AuthContext';
-import { claimOwnershipProc, deleteRSFormProc, downloadRSFormProc, shareCurrentURLProc } from '../../utils/procedures';
 import { useNavigate } from 'react-router-dom';
 import { toast } from 'react-toastify';
 
+import Button from '../../components/Common/Button';
+import Checkbox from '../../components/Common/Checkbox';
+import Dropdown from '../../components/Common/Dropdown';
+import DropdownButton from '../../components/Common/DropdownButton';
+import { CloneIcon, CrownIcon, DownloadIcon, DumpBinIcon, EyeIcon, EyeOffIcon, MenuIcon, PenIcon, ShareIcon, UploadIcon } from '../../components/Icons';
+import { useAuth } from '../../context/AuthContext';
+import { useRSForm } from '../../context/RSFormContext';
+import useDropdown from '../../hooks/useDropdown';
+import { claimOwnershipProc, deleteRSFormProc, downloadRSFormProc, shareCurrentURLProc } from '../../utils/procedures';
+
 function TablistTools() {
   const navigate = useNavigate();
-  const {user} = useAuth();
-  const { schema,
+  const { user } = useAuth();
+  const {
+    schema,
     isOwned, isEditable, isTracking, isReadonly: readonly, isForceAdmin: forceAdmin,
     toggleTracking, toggleForceAdmin, toggleReadonly,
     claim, destroy, download
@@ -24,7 +26,7 @@ function TablistTools() {
 
   const handleClaimOwner = useCallback(() => {
     editMenu.hide();
-    claimOwnershipProc(claim);
+    claimOwnershipProc(claim)
   }, [claim, editMenu]);
 
   const handleDelete = useCallback(() => {
@@ -34,7 +36,7 @@ function TablistTools() {
 
   const handleDownload = useCallback(() => {
     schemaMenu.hide();
-    const fileName = (schema?.alias || 'Schema') + '.trs';
+    const fileName = (schema?.alias ?? 'Schema') + '.trs';
     downloadRSFormProc(download, fileName);
   }, [schemaMenu, download, schema?.alias]);
 
@@ -44,7 +46,6 @@ function TablistTools() {
     toast.info('Замена содержимого на файл Экстеора');
   }, [schemaMenu]);
 
-
   const handleClone = useCallback(() => {
     // TODO: implement
     schemaMenu.hide();
@@ -55,7 +56,7 @@ function TablistTools() {
     schemaMenu.hide();
     shareCurrentURLProc();
   }, [schemaMenu]);
-  
+
   return (
     <div className='flex items-center w-fit'>
       <div ref={schemaMenu.ref}>
@@ -64,23 +65,23 @@ function TablistTools() {
           icon={<MenuIcon size={5}/>}
           borderClass=''
           dense
-          onClick={schemaMenu.toggle} 
+          onClick={schemaMenu.toggle}
         />
         { schemaMenu.isActive &&
         <Dropdown>
-          <DropdownButton  onClick={handleShare}>
+          <DropdownButton onClick={handleShare}>
             <div className='inline-flex items-center justify-start gap-2'>
               <ShareIcon color='text-primary' size={4}/>
               <p>Поделиться</p>
             </div>
           </DropdownButton>
-          <DropdownButton  onClick={handleClone}>
+          <DropdownButton onClick={handleClone}>
             <div className='inline-flex items-center justify-start gap-2'>
               <CloneIcon color='text-primary' size={4}/>
               <p>Клонировать</p>
             </div>
           </DropdownButton>
-          <DropdownButton  onClick={handleDownload}>
+          <DropdownButton onClick={handleDownload}>
             <div className='inline-flex items-center justify-start gap-2'>
               <DownloadIcon color='text-primary' size={4}/>
               <p>Выгрузить файл Экстеор</p>
@@ -102,11 +103,11 @@ function TablistTools() {
       </div>
       <div ref={editMenu.ref}>
         <Button
-          tooltip={'измнение: ' + (isEditable ? '[доступно]': '[запрещено]')}
+          tooltip={'измнение: ' + (isEditable ? '[доступно]' : '[запрещено]')}
           borderClass=''
-          icon={<PenIcon size={5} color={isEditable ? 'text-green': 'text-red'}/>}
+          icon={<PenIcon size={5} color={isEditable ? 'text-green' : 'text-red'}/>}
           dense
-          onClick={editMenu.toggle} 
+          onClick={editMenu.toggle}
         />
         { editMenu.isActive &&
         <Dropdown>
@@ -130,18 +131,18 @@ function TablistTools() {
       </div>
       <div>
         <Button
-          tooltip={'отслеживание: ' + (isTracking ? '[включено]': '[выключено]')}
-          icon={isTracking ? 
-            <EyeIcon color='text-primary' size={5}/> 
+          tooltip={'отслеживание: ' + (isTracking ? '[включено]' : '[выключено]')}
+          icon={isTracking
+            ? <EyeIcon color='text-primary' size={5}/>
             : <EyeOffIcon size={5}/>
           }
           borderClass=''
           dense
-          onClick={toggleTracking} 
+          onClick={toggleTracking}
           />
       </div>
     </div>
   );
 }
 
-export default TablistTools
\ No newline at end of file
+export default TablistTools
diff --git a/rsconcept/frontend/src/pages/RSFormPage/index.tsx b/rsconcept/frontend/src/pages/RSFormPage/index.tsx
index e5d1a998..05995a72 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/index.tsx
+++ b/rsconcept/frontend/src/pages/RSFormPage/index.tsx
@@ -1,14 +1,15 @@
 import { useParams } from 'react-router-dom';
+
 import { RSFormState } from '../../context/RSFormContext';
 import RSFormTabs from './RSFormTabs';
 
 function RSFormPage() {
   const { id } = useParams();
   return (
-    <RSFormState schemaID={id || ''}>
+    <RSFormState schemaID={id ?? ''}>
       <RSFormTabs />
     </RSFormState>
   );
 }
 
-export default RSFormPage;
\ No newline at end of file
+export default RSFormPage;
diff --git a/rsconcept/frontend/src/pages/RSFormPage/textEditing.ts b/rsconcept/frontend/src/pages/RSFormPage/textEditing.ts
index d8fb794a..ea748412 100644
--- a/rsconcept/frontend/src/pages/RSFormPage/textEditing.ts
+++ b/rsconcept/frontend/src/pages/RSFormPage/textEditing.ts
@@ -3,7 +3,7 @@
 import { TokenID } from '../../utils/models'
 
 export function getSymbolSubstitute(input: string): string | undefined {
-  switch(input) {
+  switch (input) {
   case '`': return '∀';
   case '~': return '∃';
 
@@ -71,7 +71,7 @@ export class TextWrapper implements IManagedText {
     this.object.selectionStart = this.selStart;
     this.object.selectionEnd = this.selEnd;
   }
- 
+
   replaceWith(data: string) {
     this.value = this.value.substring(0, this.selStart) + data + this.value.substring(this.selEnd, this.value.length);
     this.selEnd += data.length - this.selEnd + this.selStart;
@@ -79,8 +79,8 @@ export class TextWrapper implements IManagedText {
   }
 
   envelopeWith(left: string, right: string) {
-    this.value = this.value.substring(0, this.selStart) + left + 
-                  this.value.substring(this.selStart, this.selEnd) + right + 
+    this.value = this.value.substring(0, this.selStart) + left +
+                  this.value.substring(this.selStart, this.selEnd) + right +
                   this.value.substring(this.selEnd, this.value.length);
     this.selEnd += left.length + right.length;
   }
@@ -100,18 +100,18 @@ export class TextWrapper implements IManagedText {
   }
 
   insertToken(tokenID: TokenID): boolean {
-    switch(tokenID) {
-    case TokenID.NT_DECLARATIVE_EXPR:   this.envelopeWith('D{ξ∈X1 | ', '}'); return true;
-    case TokenID.NT_IMPERATIVE_EXPR:    this.envelopeWith('I{(σ, γ) | σ:∈X1; γ:=F1[σ]; ', '}'); return true;
-    case TokenID.NT_RECURSIVE_FULL:     this.envelopeWith('R{ ξ:=D1 | 1=1 | ', '}'); return true;
-    case TokenID.BIGPR:                 this.envelopeWith('Pr1(', ')'); return true;
-    case TokenID.SMALLPR:               this.envelopeWith('pr1(', ')'); return true;
-    case TokenID.FILTER:                this.envelopeWith('Fi1[α](', ')'); return true;
-    case TokenID.REDUCE:                this.envelopeWith('red(', ')'); return true;
-    case TokenID.CARD:                  this.envelopeWith('card(', ')'); return true;
-    case TokenID.BOOL:                  this.envelopeWith('bool(', ')'); return true;
-    case TokenID.DEBOOL:                this.envelopeWith('debool(', ')'); return true;
-    
+    switch (tokenID) {
+    case TokenID.NT_DECLARATIVE_EXPR: this.envelopeWith('D{ξ∈X1 | ', '}'); return true;
+    case TokenID.NT_IMPERATIVE_EXPR: this.envelopeWith('I{(σ, γ) | σ:∈X1; γ:=F1[σ]; ', '}'); return true;
+    case TokenID.NT_RECURSIVE_FULL: this.envelopeWith('R{ ξ:=D1 | 1=1 | ', '}'); return true;
+    case TokenID.BIGPR: this.envelopeWith('Pr1(', ')'); return true;
+    case TokenID.SMALLPR: this.envelopeWith('pr1(', ')'); return true;
+    case TokenID.FILTER: this.envelopeWith('Fi1[α](', ')'); return true;
+    case TokenID.REDUCE: this.envelopeWith('red(', ')'); return true;
+    case TokenID.CARD: this.envelopeWith('card(', ')'); return true;
+    case TokenID.BOOL: this.envelopeWith('bool(', ')'); return true;
+    case TokenID.DEBOOL: this.envelopeWith('debool(', ')'); return true;
+
     case TokenID.PUNC_PL: {
       this.envelopeWith('(', ')');
       this.selEnd = this.selStart + 1;
@@ -130,41 +130,41 @@ export class TextWrapper implements IManagedText {
       } else {
         this.envelopeWith('ℬ(', ')');
       }
-       return true;
+      return true;
     }
-    
-    case TokenID.DECART:                this.replaceWith('×'); return true;
-    case TokenID.FORALL:                this.replaceWith('∀'); return true;
-    case TokenID.EXISTS:                this.replaceWith('∃'); return true;
-    case TokenID.IN:                    this.replaceWith('∈'); return true;
-    case TokenID.NOTIN:                 this.replaceWith('∉'); return true;
-    case TokenID.OR:                    this.replaceWith('∨'); return true;
-    case TokenID.AND:                   this.replaceWith('&'); return true;
-    case TokenID.SUBSET_OR_EQ:          this.replaceWith('⊆'); return true;
-    case TokenID.IMPLICATION:           this.replaceWith('⇒'); return true;
-    case TokenID.INTERSECTION:          this.replaceWith('∩'); return true;
-    case TokenID.UNION:                 this.replaceWith('∪'); return true;
-    case TokenID.SET_MINUS:             this.replaceWith('\\'); return true;
-    case TokenID.SYMMINUS:              this.replaceWith('∆'); return true;
-    case TokenID.LIT_EMPTYSET:          this.replaceWith('∅'); return true;
-    case TokenID.LIT_INTSET:            this.replaceWith('Z'); return true;
-    case TokenID.SUBSET:                this.replaceWith('⊂'); return true;
-    case TokenID.NOTSUBSET:             this.replaceWith('⊄'); return true;
-    case TokenID.EQUAL:                 this.replaceWith('='); return true;
-    case TokenID.NOTEQUAL:              this.replaceWith('≠'); return true;
-    case TokenID.NOT:                   this.replaceWith('¬'); return true;
-    case TokenID.EQUIVALENT:            this.replaceWith('⇔'); return true;
-    case TokenID.GREATER_OR_EQ:         this.replaceWith('≥'); return true;
-    case TokenID.LESSER_OR_EQ:          this.replaceWith('≤'); return true;
-    case TokenID.PUNC_ASSIGN:           this.replaceWith(':='); return true;
-    case TokenID.PUNC_ITERATE:          this.replaceWith(':∈'); return true;
-    case TokenID.MULTIPLY:              this.replaceWith('*'); return true;
+
+    case TokenID.DECART: this.replaceWith('×'); return true;
+    case TokenID.FORALL: this.replaceWith('∀'); return true;
+    case TokenID.EXISTS: this.replaceWith('∃'); return true;
+    case TokenID.IN: this.replaceWith('∈'); return true;
+    case TokenID.NOTIN: this.replaceWith('∉'); return true;
+    case TokenID.OR: this.replaceWith('∨'); return true;
+    case TokenID.AND: this.replaceWith('&'); return true;
+    case TokenID.SUBSET_OR_EQ: this.replaceWith('⊆'); return true;
+    case TokenID.IMPLICATION: this.replaceWith('⇒'); return true;
+    case TokenID.INTERSECTION: this.replaceWith('∩'); return true;
+    case TokenID.UNION: this.replaceWith('∪'); return true;
+    case TokenID.SET_MINUS: this.replaceWith('\\'); return true;
+    case TokenID.SYMMINUS: this.replaceWith('∆'); return true;
+    case TokenID.LIT_EMPTYSET: this.replaceWith('∅'); return true;
+    case TokenID.LIT_INTSET: this.replaceWith('Z'); return true;
+    case TokenID.SUBSET: this.replaceWith('⊂'); return true;
+    case TokenID.NOTSUBSET: this.replaceWith('⊄'); return true;
+    case TokenID.EQUAL: this.replaceWith('='); return true;
+    case TokenID.NOTEQUAL: this.replaceWith('≠'); return true;
+    case TokenID.NOT: this.replaceWith('¬'); return true;
+    case TokenID.EQUIVALENT: this.replaceWith('⇔'); return true;
+    case TokenID.GREATER_OR_EQ: this.replaceWith('≥'); return true;
+    case TokenID.LESSER_OR_EQ: this.replaceWith('≤'); return true;
+    case TokenID.PUNC_ASSIGN: this.replaceWith(':='); return true;
+    case TokenID.PUNC_ITERATE: this.replaceWith(':∈'); return true;
+    case TokenID.MULTIPLY: this.replaceWith('*'); return true;
     }
     return false;
   }
 
   processAltKey(key: string): boolean {
-  switch(key) {
+    switch (key) {
     // qwert
     //  asdfg
     //   zxcvb
@@ -183,7 +183,7 @@ export class TextWrapper implements IManagedText {
     case 'c': return this.insertToken(TokenID.CARD);
     case 'v': return this.insertToken(TokenID.DEBOOL);
     case 'b': return this.insertToken(TokenID.BOOL);
-    
+
     // `123456
     // ~!@#$%^
     case '`': return this.insertToken(TokenID.NOT);
@@ -209,4 +209,4 @@ export class TextWrapper implements IManagedText {
     }
     return false;
   }
-};
\ No newline at end of file
+};
diff --git a/rsconcept/frontend/src/pages/RSFormsPage/index.tsx b/rsconcept/frontend/src/pages/RSFormsPage/index.tsx
index e5342edf..cc3ee8d5 100644
--- a/rsconcept/frontend/src/pages/RSFormsPage/index.tsx
+++ b/rsconcept/frontend/src/pages/RSFormsPage/index.tsx
@@ -1,10 +1,11 @@
+import { useEffect } from 'react';
 import { useLocation } from 'react-router-dom';
+
 import BackendError from '../../components/BackendError'
 import { Loader } from '../../components/Common/Loader'
-import { FilterType, RSFormsFilter, useRSForms } from '../../hooks/useRSForms'
-import RSFormsTable from './RSFormsTable';
-import { useEffect } from 'react';
 import { useAuth } from '../../context/AuthContext';
+import { FilterType, type RSFormsFilter, useRSForms } from '../../hooks/useRSForms'
+import RSFormsTable from './RSFormsTable';
 
 function RSFormsPage() {
   const search = useLocation().search;
@@ -14,13 +15,13 @@ function RSFormsPage() {
   useEffect(() => {
     const filterQuery = new URLSearchParams(search).get('filter');
     const type = (!user || !filterQuery ? FilterType.COMMON : filterQuery as FilterType);
-    let filter: RSFormsFilter = {type: type};
+    const filter: RSFormsFilter = { type };
     if (type === FilterType.PERSONAL) {
       filter.data = user?.id;
     }
-    loadList(filter);
+    loadList(filter).catch(console.error);
   }, [search, user, loadList]);
-  
+
   return (
     <div className='w-full'>
       { loading && <Loader /> }
@@ -30,4 +31,4 @@ function RSFormsPage() {
   );
 }
 
-export default RSFormsPage;
\ No newline at end of file
+export default RSFormsPage;
diff --git a/rsconcept/frontend/src/pages/RegisterPage.tsx b/rsconcept/frontend/src/pages/RegisterPage.tsx
index ccf70803..b5af9e8d 100644
--- a/rsconcept/frontend/src/pages/RegisterPage.tsx
+++ b/rsconcept/frontend/src/pages/RegisterPage.tsx
@@ -1,13 +1,13 @@
 import { useEffect, useState } from 'react';
 
-import TextInput from '../components/Common/TextInput';
-import Form from '../components/Common/Form';
-import { useAuth } from '../context/AuthContext';
-import SubmitButton from '../components/Common/SubmitButton';
 import BackendError from '../components/BackendError';
-import { IUserSignupData } from '../utils/models';
-import InfoMessage from '../components/InfoMessage';
+import Form from '../components/Common/Form';
+import SubmitButton from '../components/Common/SubmitButton';
+import TextInput from '../components/Common/TextInput';
 import TextURL from '../components/Common/TextURL';
+import InfoMessage from '../components/InfoMessage';
+import { useAuth } from '../context/AuthContext';
+import { type IUserSignupData } from '../utils/models';
 
 function RegisterPage() {
   const [username, setUsername] = useState('');
@@ -16,7 +16,7 @@ function RegisterPage() {
   const [password2, setPassword2] = useState('');
   const [firstName, setFirstName] = useState('');
   const [lastName, setLastName] = useState('');
-  
+
   const [success, setSuccess] = useState(false);
   const { user, signup, loading, error, setError } = useAuth()
 
@@ -27,43 +27,43 @@ function RegisterPage() {
   const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
     event.preventDefault();
     if (!loading) {
-      const data: IUserSignupData  = {
-        'username': username,
-        'email': email,
-        'password': password,
-        'password2': password2,
-        'first_name': firstName,
-        'last_name': lastName,
+      const data: IUserSignupData = {
+        username,
+        email,
+        password,
+        password2,
+        first_name: firstName,
+        last_name: lastName
       };
-      signup(data, () => setSuccess(true));
+      signup(data, () => { setSuccess(true); });
     }
   };
 
   return (
-    <div className='w-full py-2'> 
-    { success && 
+    <div className='w-full py-2'>
+    { success &&
       <div className='flex flex-col items-center'>
         <InfoMessage message={`Вы успешно зарегистрировали пользователя ${username}`}/>
         <TextURL text='Войти в аккаунт' href={`/login?username=${username}`}/>
       </div>}
     { !success && user &&
       <InfoMessage message={`Вы вошли в систему как ${user.username}. Если хотите зарегистрировать нового пользователя, выйдите из системы (меню в правом верхнем углу экрана)`} /> }
-    { !success && !user && 
+    { !success && !user &&
       <Form title='Регистрация пользователя' onSubmit={handleSubmit}>
         <TextInput id='username' label='Имя пользователя' type='text'
           required
           value={username}
-          onChange={event => setUsername(event.target.value)} 
+          onChange={event => { setUsername(event.target.value); }}
         />
-        <TextInput id='password' label='Пароль' type='password' 
+        <TextInput id='password' label='Пароль' type='password'
           required
           value={password}
-          onChange={event => setPassword(event.target.value)}
+          onChange={event => { setPassword(event.target.value); }}
         />
         <TextInput id='password2' label='Повторите пароль' type='password'
           required
           value={password2}
-          onChange={event => setPassword2(event.target.value)} 
+          onChange={event => { setPassword2(event.target.value); }}
         />
         <div className='text-sm'>
           <p>- минимум 8 символов</p>
@@ -73,15 +73,15 @@ function RegisterPage() {
         <TextInput id='email' label='email' type='text'
           required
           value={email}
-          onChange={event => setEmail(event.target.value)}
+          onChange={event => { setEmail(event.target.value); }}
         />
         <TextInput id='first_name' label='Имя' type='text'
           value={firstName}
-          onChange={event => setFirstName(event.target.value)}
+          onChange={event => { setFirstName(event.target.value); }}
         />
         <TextInput id='last_name' label='Фамилия' type='text'
           value={lastName}
-          onChange={event => setLastName(event.target.value)}
+          onChange={event => { setLastName(event.target.value); }}
         />
 
         <div className='flex items-center justify-between my-4'>
@@ -94,4 +94,4 @@ function RegisterPage() {
   );
 }
 
-export default RegisterPage;
\ No newline at end of file
+export default RegisterPage;
diff --git a/rsconcept/frontend/src/pages/RestorePasswordPage.tsx b/rsconcept/frontend/src/pages/RestorePasswordPage.tsx
index e57d569d..b6879018 100644
--- a/rsconcept/frontend/src/pages/RestorePasswordPage.tsx
+++ b/rsconcept/frontend/src/pages/RestorePasswordPage.tsx
@@ -6,4 +6,4 @@ function RestorePasswordPage() {
   );
 }
 
-export default RestorePasswordPage;
\ No newline at end of file
+export default RestorePasswordPage;
diff --git a/rsconcept/frontend/src/pages/UserProfilePage/UserProfile.tsx b/rsconcept/frontend/src/pages/UserProfilePage/UserProfile.tsx
index f0a0d9b2..fb594591 100644
--- a/rsconcept/frontend/src/pages/UserProfilePage/UserProfile.tsx
+++ b/rsconcept/frontend/src/pages/UserProfilePage/UserProfile.tsx
@@ -1,14 +1,14 @@
-import { IUserProfile } from '../../utils/models';
+import { type IUserProfile } from '../../utils/models';
 
 interface UserProfileProps {
   profile: IUserProfile
 }
 
-export function UserProfile({profile}: UserProfileProps) {
-    return (
-        <div className='flex justify-center'>
-            <p>username: {profile.username}</p>
-            <p>email: {profile.email}</p>
-        </div>
-    );
+export function UserProfile({ profile }: UserProfileProps) {
+  return (
+    <div className='flex justify-center'>
+        <p>username: {profile.username}</p>
+        <p>email: {profile.email}</p>
+    </div>
+  );
 }
diff --git a/rsconcept/frontend/src/pages/UserProfilePage/index.tsx b/rsconcept/frontend/src/pages/UserProfilePage/index.tsx
index f01eda97..70046401 100644
--- a/rsconcept/frontend/src/pages/UserProfilePage/index.tsx
+++ b/rsconcept/frontend/src/pages/UserProfilePage/index.tsx
@@ -15,4 +15,4 @@ function UserProfilePage() {
   );
 }
 
-export default UserProfilePage;
\ No newline at end of file
+export default UserProfilePage;
diff --git a/rsconcept/frontend/src/utils/backendAPI.ts b/rsconcept/frontend/src/utils/backendAPI.ts
index 1703e39e..de8158ad 100644
--- a/rsconcept/frontend/src/utils/backendAPI.ts
+++ b/rsconcept/frontend/src/utils/backendAPI.ts
@@ -1,9 +1,10 @@
-import axios, { AxiosResponse } from 'axios'
-import { config } from './constants'
-import { ErrorInfo } from '../components/BackendError'
+import axios, { type AxiosResponse } from 'axios'
 import { toast } from 'react-toastify'
-import { ICurrentUser, IRSForm, IUserInfo, IUserProfile } from './models'
-import { FilterType, RSFormsFilter } from '../hooks/useRSForms'
+
+import { type ErrorInfo } from '../components/BackendError'
+import { FilterType, type RSFormsFilter } from '../hooks/useRSForms'
+import { config } from './constants'
+import { type ICurrentUser, type IRSForm, type IUserInfo, type IUserProfile } from './models'
 
 export type BackendCallback = (response: AxiosResponse) => void;
 
@@ -23,231 +24,230 @@ interface IAxiosRequest {
 
 // ================= Export API ==============
 export async function postLogin(request?: IFrontRequest) {
-  AxiosPost({
+  await AxiosPost({
     title: 'Login',
     endpoint: `${config.url.AUTH}login`,
-    request: request
+    request
   });
 }
 
 export async function getAuth(request?: IFrontRequest) {
-  AxiosGet<ICurrentUser>({
+  await AxiosGet<ICurrentUser>({
     title: 'Current user',
     endpoint: `${config.url.AUTH}auth`,
-    request: request
+    request
   });
 }
 
 export async function getProfile(request?: IFrontRequest) {
-  AxiosGet<IUserProfile>({
+  await AxiosGet<IUserProfile>({
     title: 'Current user profile',
     endpoint: `${config.url.AUTH}profile`,
-    request: request
+    request
   });
 }
 
 export async function postLogout(request?: IFrontRequest) {
-  AxiosPost({
+  await AxiosPost({
     title: 'Logout',
     endpoint: `${config.url.AUTH}logout`,
-    request: request
+    request
   });
 };
 
 export async function postSignup(request?: IFrontRequest) {
-  AxiosPost({
+  await AxiosPost({
     title: 'Register user',
     endpoint: `${config.url.AUTH}signup`,
-    request: request
+    request
   });
 }
 
 export async function getActiveUsers(request?: IFrontRequest) {
-  AxiosGet<IUserInfo>({
+  await AxiosGet<IUserInfo>({
     title: 'Active users list',
     endpoint: `${config.url.AUTH}active-users`,
-    request: request
+    request
   });
 }
 
 export async function getRSForms(filter: RSFormsFilter, request?: IFrontRequest) {
   let endpoint: string = ''
   if (filter.type === FilterType.PERSONAL) {
-    endpoint = `${config.url.BASE}rsforms?owner=${filter.data!}`
+    endpoint = `${config.url.BASE}rsforms?owner=${filter.data as number}`
   } else {
     endpoint = `${config.url.BASE}rsforms?is_common=true`
   }
 
-  AxiosGet<IRSForm[]>({
-    title: `RSForms list`,
-    endpoint: endpoint,
-    request: request
+  await AxiosGet<IRSForm[]>({
+    title: 'RSForms list',
+    endpoint,
+    request
   });
 }
 
 export async function postNewRSForm(request?: IFrontRequest) {
-  AxiosPost({
-    title: `New RSForm`,
+  await AxiosPost({
+    title: 'New RSForm',
     endpoint: `${config.url.BASE}rsforms/create-detailed/`,
-    request: request
+    request
   });
 }
 
 export async function getRSFormDetails(target: string, request?: IFrontRequest) {
-  AxiosGet<IRSForm>({
+  await AxiosGet<IRSForm>({
     title: `RSForm details for id=${target}`,
     endpoint: `${config.url.BASE}rsforms/${target}/details/`,
-    request: request
+    request
   });
 }
 
 export async function patchRSForm(target: string, request?: IFrontRequest) {
-  AxiosPatch({
+  await AxiosPatch({
     title: `RSForm id=${target}`,
     endpoint: `${config.url.BASE}rsforms/${target}/`,
-    request: request
+    request
   });
 }
 
 export async function patchConstituenta(target: string, request?: IFrontRequest) {
-  AxiosPatch({
+  await AxiosPatch({
     title: `Constituenta id=${target}`,
     endpoint: `${config.url.BASE}constituents/${target}/`,
-    request: request
+    request
   });
 }
 
-
 export async function deleteRSForm(target: string, request?: IFrontRequest) {
-  AxiosDelete({
+  await AxiosDelete({
     title: `RSForm id=${target}`,
     endpoint: `${config.url.BASE}rsforms/${target}/`,
-    request: request
+    request
   });
 }
 
 export async function getTRSFile(target: string, request?: IFrontRequest) {
-  AxiosGetBlob({
+  await AxiosGetBlob({
     title: `RSForm TRS file for id=${target}`,
     endpoint: `${config.url.BASE}rsforms/${target}/export-trs/`,
-    request: request
+    request
   });
 }
 
 export async function postClaimRSForm(target: string, request?: IFrontRequest) {
-  AxiosPost({
+  await AxiosPost({
     title: `Claim on RSForm id=${target}`,
     endpoint: `${config.url.BASE}rsforms/${target}/claim/`,
-    request: request
+    request
   });
 }
 
 export async function postCheckExpression(schema: string, request?: IFrontRequest) {
-  AxiosPost({
-    title: `Check expression for RSForm id=${schema}: ${request?.data['expression']}`,
+  await AxiosPost({
+    title: `Check expression for RSForm id=${schema}: ${request?.data.expression as string}`,
     endpoint: `${config.url.BASE}rsforms/${schema}/check/`,
-    request: request
+    request
   });
 }
 
 export async function postNewConstituenta(schema: string, request?: IFrontRequest) {
-  AxiosPost({
-    title: `New Constituenta for RSForm id=${schema}: ${request?.data['alias']}`,
+  await AxiosPost({
+    title: `New Constituenta for RSForm id=${schema}: ${request?.data.alias as string}`,
     endpoint: `${config.url.BASE}rsforms/${schema}/cst-create/`,
-    request: request
+    request
   });
 }
 
 export async function patchDeleteConstituenta(schema: string, request?: IFrontRequest) {
-  AxiosPatch<IRSForm>({
-    title: `Delete Constituents for RSForm id=${schema}: ${request?.data['items'].toString()}`,
+  await AxiosPatch<IRSForm>({
+    // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
+    title: `Delete Constituents for RSForm id=${schema}: ${request?.data.items.toString()}`,
     endpoint: `${config.url.BASE}rsforms/${schema}/cst-multidelete/`,
-    request: request
+    request
   });
 }
 
 export async function patchMoveConstituenta(schema: string, request?: IFrontRequest) {
-  AxiosPatch<IRSForm>({
-    title: `Moving Constituents for RSForm id=${schema}: ${JSON.stringify(request?.data['items'])} to ${request?.data['move_to']}`,
+  await AxiosPatch<IRSForm>({
+    title: `Moving Constituents for RSForm id=${schema}: ${JSON.stringify(request?.data.items)} to ${request?.data.move_to as number}`,
     endpoint: `${config.url.BASE}rsforms/${schema}/cst-moveto/`,
-    request: request
+    request
   });
 }
 
-
 // ====== Helper functions ===========
-async function AxiosGet<ReturnType>({endpoint, request, title}: IAxiosRequest) {
+async function AxiosGet<ReturnType>({ endpoint, request, title }: IAxiosRequest) {
   if (title) console.log(`[[${title}]] requested`);
   if (request?.setLoading) request?.setLoading(true);
   axios.get<ReturnType>(endpoint)
-  .then((response) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.onSucccess) request.onSucccess(response);
-  })
-  .catch((error) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.showError) toast.error(error.message);
-    if (request?.onError) request.onError(error);
-  });
+    .then((response) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.onSucccess) request.onSucccess(response);
+    })
+    .catch((error) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.showError) toast.error(error.message);
+      if (request?.onError) request.onError(error);
+    });
 }
 
-async function AxiosGetBlob({endpoint, request, title}: IAxiosRequest) {
+async function AxiosGetBlob({ endpoint, request, title }: IAxiosRequest) {
   if (title) console.log(`[[${title}]] requested`);
   if (request?.setLoading) request?.setLoading(true);
-  axios.get(endpoint, {responseType: 'blob'})
-  .then((response) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.onSucccess) request.onSucccess(response);
-  })
-  .catch((error) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.showError) toast.error(error.message);
-    if (request?.onError) request.onError(error);
-  });
+  axios.get(endpoint, { responseType: 'blob' })
+    .then((response) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.onSucccess) request.onSucccess(response);
+    })
+    .catch((error) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.showError) toast.error(error.message);
+      if (request?.onError) request.onError(error);
+    });
 }
 
-async function AxiosPost({endpoint, request, title}: IAxiosRequest) {
+async function AxiosPost({ endpoint, request, title }: IAxiosRequest) {
   if (title) console.log(`[[${title}]] posted`);
   if (request?.setLoading) request?.setLoading(true);
   axios.post(endpoint, request?.data)
-  .then((response) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.onSucccess) request.onSucccess(response);
-  })
-  .catch((error) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.showError) toast.error(error.message);
-    if (request?.onError) request.onError(error);
-  });
+    .then((response) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.onSucccess) request.onSucccess(response);
+    })
+    .catch((error) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.showError) toast.error(error.message);
+      if (request?.onError) request.onError(error);
+    });
 }
 
-async function AxiosDelete({endpoint, request, title}: IAxiosRequest) {
+async function AxiosDelete({ endpoint, request, title }: IAxiosRequest) {
   if (title) console.log(`[[${title}]] is being deleted`);
   if (request?.setLoading) request?.setLoading(true);
   axios.delete(endpoint)
-  .then((response) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.onSucccess) request.onSucccess(response);
-  })
-  .catch((error) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.showError) toast.error(error.message);
-    if (request?.onError) request.onError(error);
-  });
+    .then((response) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.onSucccess) request.onSucccess(response);
+    })
+    .catch((error) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.showError) toast.error(error.message);
+      if (request?.onError) request.onError(error);
+    });
 }
 
-async function AxiosPatch<ReturnType>({endpoint, request, title}: IAxiosRequest) {
+async function AxiosPatch<ReturnType>({ endpoint, request, title }: IAxiosRequest) {
   if (title) console.log(`[[${title}]] is being patrially updated`);
   if (request?.setLoading) request?.setLoading(true);
   axios.patch<ReturnType>(endpoint, request?.data)
-  .then((response) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.onSucccess) request.onSucccess(response);
-    return response.data;
-  })
-  .catch((error) => {
-    if (request?.setLoading) request?.setLoading(false);
-    if (request?.showError) toast.error(error.message);
-    if (request?.onError) request.onError(error);
-  });
-}
\ No newline at end of file
+    .then((response) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.onSucccess) request.onSucccess(response);
+      return response.data;
+    })
+    .catch((error) => {
+      if (request?.setLoading) request?.setLoading(false);
+      if (request?.showError) toast.error(error.message);
+      if (request?.onError) request.onError(error);
+    });
+}
diff --git a/rsconcept/frontend/src/utils/constants.ts b/rsconcept/frontend/src/utils/constants.ts
index d36452b3..46064ae4 100644
--- a/rsconcept/frontend/src/utils/constants.ts
+++ b/rsconcept/frontend/src/utils/constants.ts
@@ -1,25 +1,25 @@
 // Constants
 const prod = {
-	url: {
-		BASE: 'http://rs.acconcept.ru:8000/api/',
-		AUTH: 'http://rs.acconcept.ru:8000/users/api/',
-	},
+  url: {
+    BASE: 'http://rs.acconcept.ru:8000/api/',
+    AUTH: 'http://rs.acconcept.ru:8000/users/api/'
+  }
 };
 
 const dev = {
-	url: {
-		BASE: 'http://localhost:8000/api/',
-		AUTH: 'http://localhost:8000/users/api/',
-	},
+  url: {
+    BASE: 'http://localhost:8000/api/',
+    AUTH: 'http://localhost:8000/users/api/'
+  }
 };
 
 export const urls = {
-	concept: 'https://www.acconcept.ru/',
-	exteor32: 'https://drive.google.com/open?id=1IHlMMwaYlAUBRSxU1RU_hXM5mFU9-oyK&usp=drive_fs',
-	exteor64: 'https://drive.google.com/open?id=1IJt25ZRQ-ZMA6t7hOqmo5cv05WJCQKMv&usp=drive_fs',
-	ponomarev: 'https://inponomarev.ru/textbook',
-	intro_video: 'https://www.youtube.com/watch?v=0Ty9mu9sOJo',
-	full_course: 'https://www.youtube.com/playlist?list=PLGe_JiAwpqu1C70ruQmCm_OWTWU3KJwDo',
+  concept: 'https://www.acconcept.ru/',
+  exteor32: 'https://drive.google.com/open?id=1IHlMMwaYlAUBRSxU1RU_hXM5mFU9-oyK&usp=drive_fs',
+  exteor64: 'https://drive.google.com/open?id=1IJt25ZRQ-ZMA6t7hOqmo5cv05WJCQKMv&usp=drive_fs',
+  ponomarev: 'https://inponomarev.ru/textbook',
+  intro_video: 'https://www.youtube.com/watch?v=0Ty9mu9sOJo',
+  full_course: 'https://www.youtube.com/playlist?list=PLGe_JiAwpqu1C70ruQmCm_OWTWU3KJwDo'
 };
 
-export const config = process.env.NODE_ENV === 'production' ? prod : dev;
\ No newline at end of file
+export const config = process.env.NODE_ENV === 'production' ? prod : dev;
diff --git a/rsconcept/frontend/src/utils/models.ts b/rsconcept/frontend/src/utils/models.ts
index 3d6106ad..7deac8d0 100644
--- a/rsconcept/frontend/src/utils/models.ts
+++ b/rsconcept/frontend/src/utils/models.ts
@@ -1,388 +1,352 @@
 // Current user info
 export interface ICurrentUser {
-    id: number
-    username: string
-    is_staff: boolean
+  id: number
+  username: string
+  is_staff: boolean
 }
 
 // User profile data
 export interface IUserProfile {
-    id: number
-    username: string
-    email: string
-    first_name: string
-    last_name: string
+  id: number
+  username: string
+  email: string
+  first_name: string
+  last_name: string
 }
 
 // User base info
 export interface IUserInfo {
-    id: number
-    username: string
-    first_name: string
-    last_name: string
+  id: number
+  username: string
+  first_name: string
+  last_name: string
 }
 
 // User data for signup
 export interface IUserSignupData {
-    username: string
-    email: string
-    first_name: string
-    last_name: string
-    password: string
-    password2: string
+  username: string
+  email: string
+  first_name: string
+  last_name: string
+  password: string
+  password2: string
 }
 
 // User data for signup
 export interface INewCstData {
-    alias: string
-    csttype: CstType
-    insert_after?: number
+  alias: string
+  csttype: CstType
+  insert_after?: number
 }
 
 // Constituenta type
 export enum CstType {
-    BASE = 'basic',
-    CONSTANT = 'constant',
-    STRUCTURED = 'structure',
-    AXIOM = 'axiom',
-    TERM = 'term',
-    FUNCTION = 'function',
-    PREDICATE = 'predicate',
-    THEOREM = 'theorem'
+  BASE = 'basic',
+  CONSTANT = 'constant',
+  STRUCTURED = 'structure',
+  AXIOM = 'axiom',
+  TERM = 'term',
+  FUNCTION = 'function',
+  PREDICATE = 'predicate',
+  THEOREM = 'theorem'
 }
 
 // ValueClass
 export enum ValueClass {
-    INVALID = 'invalid',
-    VALUE = 'value',
-    PROPERTY = 'property'
+  INVALID = 'invalid',
+  VALUE = 'value',
+  PROPERTY = 'property'
 }
 
 // Syntax
 export enum Syntax {
-    UNDEF = 'undefined',
-    ASCII = 'ascii',
-    MATH = 'math'
+  UNDEF = 'undefined',
+  ASCII = 'ascii',
+  MATH = 'math'
 }
 
 // ParsingStatus
 export enum ParsingStatus {
-    UNDEF = 'undefined',
-    VERIFIED = 'verified',
-    INCORRECT = 'incorrect'
+  UNDEF = 'undefined',
+  VERIFIED = 'verified',
+  INCORRECT = 'incorrect'
 }
 
 // Constituenta data
 export interface IConstituenta {
-    id: number
-    alias: string
-    cstType: CstType
-    convention?: string
-    term?: {
-        raw: string
-        resolved?: string
-        forms?: string[]
-    }
-    definition?: {
-        formal: string
-        text: {
-            raw: string
-            resolved?: string
-        }
-    }
-    parse?: {
-        status: ParsingStatus
-        valueClass: ValueClass
-        typification: string
-        syntaxTree: string
+  id: number
+  alias: string
+  cstType: CstType
+  convention?: string
+  term?: {
+    raw: string
+    resolved?: string
+    forms?: string[]
+  }
+  definition?: {
+    formal: string
+    text: {
+      raw: string
+      resolved?: string
     }
+  }
+  parse?: {
+    status: ParsingStatus
+    valueClass: ValueClass
+    typification: string
+    syntaxTree: string
+  }
 }
 
 // RSForm stats
 export interface IRSFormStats {
-    count_all: number
-    count_errors: number
-    count_property: number
-    count_incalc: number
+  count_all: number
+  count_errors: number
+  count_property: number
+  count_incalc: number
 
-    count_termin: number
+  count_termin: number
 
-    count_base: number
-    count_constant: number
-    count_structured: number
-    count_axiom: number
-    count_term: number
-    count_function: number
-    count_predicate: number
-    count_theorem: number
+  count_base: number
+  count_constant: number
+  count_structured: number
+  count_axiom: number
+  count_term: number
+  count_function: number
+  count_predicate: number
+  count_theorem: number
 }
 
 // RSForm data
 export interface IRSForm {
-    id: number
-    title: string
-    alias: string
-    comment: string
-    is_common: boolean
-    time_create: string
-    time_update: string
-    owner?: number
-    items?: IConstituenta[]
-    stats?: IRSFormStats
+  id: number
+  title: string
+  alias: string
+  comment: string
+  is_common: boolean
+  time_create: string
+  time_update: string
+  owner?: number
+  items?: IConstituenta[]
+  stats?: IRSFormStats
 }
 
 // RSForm user input
 export interface IRSFormCreateData {
-    title: string
-    alias: string
-    comment: string
-    is_common: boolean
-    file?: File
+  title: string
+  alias: string
+  comment: string
+  is_common: boolean
+  file?: File
 }
 
 //! RS language token types enumeration
 export enum TokenID {
-	// Global, local IDs and literals
-	ID_LOCAL = 258,
-	ID_GLOBAL,
-	ID_FUNCTION,
-	ID_PREDICATE,
-	ID_RADICAL,
-	LIT_INTEGER,
-	LIT_INTSET,
-	LIT_EMPTYSET,
+  // Global, local IDs and literals
+  ID_LOCAL = 258,
+  ID_GLOBAL,
+  ID_FUNCTION,
+  ID_PREDICATE,
+  ID_RADICAL,
+  LIT_INTEGER,
+  LIT_INTSET,
+  LIT_EMPTYSET,
 
-	// Aithmetic
-	PLUS,
-	MINUS,
-	MULTIPLY,
+  // Aithmetic
+  PLUS,
+  MINUS,
+  MULTIPLY,
 
-	// Integer predicate symbols
-	GREATER,
-	LESSER,
-	GREATER_OR_EQ,
-	LESSER_OR_EQ,
+  // Integer predicate symbols
+  GREATER,
+  LESSER,
+  GREATER_OR_EQ,
+  LESSER_OR_EQ,
 
-	// Equality comparison
-	EQUAL,
-	NOTEQUAL,
+  // Equality comparison
+  EQUAL,
+  NOTEQUAL,
 
-	// Logic predicate symbols
-	FORALL,
-	EXISTS,
-	NOT,
-	EQUIVALENT,
-	IMPLICATION,
-	OR,
-	AND,
+  // Logic predicate symbols
+  FORALL,
+  EXISTS,
+  NOT,
+  EQUIVALENT,
+  IMPLICATION,
+  OR,
+  AND,
 
-	// Set theory predicate symbols
-	IN,
-	NOTIN,
-	SUBSET,
-	SUBSET_OR_EQ,
-	NOTSUBSET,
+  // Set theory predicate symbols
+  IN,
+  NOTIN,
+  SUBSET,
+  SUBSET_OR_EQ,
+  NOTSUBSET,
 
-	// Set theory operators
-	DECART,
-	UNION,
-	INTERSECTION,
-	SET_MINUS,
-	SYMMINUS,
-	BOOLEAN,
+  // Set theory operators
+  DECART,
+  UNION,
+  INTERSECTION,
+  SET_MINUS,
+  SYMMINUS,
+  BOOLEAN,
 
-	// Structure operations
-	BIGPR,
-	SMALLPR,
-	FILTER,
-	CARD,
-	BOOL,
-	DEBOOL,
-	REDUCE,
+  // Structure operations
+  BIGPR,
+  SMALLPR,
+  FILTER,
+  CARD,
+  BOOL,
+  DEBOOL,
+  REDUCE,
 
-	// Term constructions prefixes
-	DECLARATIVE,
-	RECURSIVE,
-	IMPERATIVE,
+  // Term constructions prefixes
+  DECLARATIVE,
+  RECURSIVE,
+  IMPERATIVE,
 
-	// Punctuation
-	PUNC_DEFINE,
-	PUNC_STRUCT,
-	PUNC_ASSIGN,
-	PUNC_ITERATE,
-	PUNC_PL,
-	PUNC_PR,
-	PUNC_CL,
-	PUNC_CR,
-	PUNC_SL,
-	PUNC_SR,
-	PUNC_BAR,
-	PUNC_COMMA,
-	PUNC_SEMICOLON,
+  // Punctuation
+  PUNC_DEFINE,
+  PUNC_STRUCT,
+  PUNC_ASSIGN,
+  PUNC_ITERATE,
+  PUNC_PL,
+  PUNC_PR,
+  PUNC_CL,
+  PUNC_CR,
+  PUNC_SL,
+  PUNC_SR,
+  PUNC_BAR,
+  PUNC_COMMA,
+  PUNC_SEMICOLON,
 
-	// ======= Non-terminal tokens =========
-	NT_ENUM_DECL, // Перечисление переменных в кванторной декларации
-	NT_TUPLE, // Кортеж (a,b,c), типизация B(T(a)xT(b)xT(c))
-	NT_ENUMERATION, // Задание множества перечислением
-	NT_TUPLE_DECL,  // Декларация переменных с помощью кортежа
-	NT_ARG_DECL, // Объявление аргумента
+  // ======= Non-terminal tokens =========
+  NT_ENUM_DECL, // Перечисление переменных в кванторной декларации
+  NT_TUPLE, // Кортеж (a,b,c), типизация B(T(a)xT(b)xT(c))
+  NT_ENUMERATION, // Задание множества перечислением
+  NT_TUPLE_DECL, // Декларация переменных с помощью кортежа
+  NT_ARG_DECL, // Объявление аргумента
 
-	NT_FUNC_DEFINITION, // Определение функции
-	NT_ARGUMENTS, // Задание аргументов функции
-	NT_FUNC_CALL, // Вызов функции
+  NT_FUNC_DEFINITION, // Определение функции
+  NT_ARGUMENTS, // Задание аргументов функции
+  NT_FUNC_CALL, // Вызов функции
 
-	NT_DECLARATIVE_EXPR, // Задание множества с помощью выражения D{x из H | A(x) }
-	NT_IMPERATIVE_EXPR, // Императивное определение
-	NT_RECURSIVE_FULL, // Полная рекурсия
-	NT_RECURSIVE_SHORT, // Сокращенная рекурсия
+  NT_DECLARATIVE_EXPR, // Задание множества с помощью выражения D{x из H | A(x) }
+  NT_IMPERATIVE_EXPR, // Императивное определение
+  NT_RECURSIVE_FULL, // Полная рекурсия
+  NT_RECURSIVE_SHORT, // Сокращенная рекурсия
 
-	NT_IMP_DECLARE, // Блок декларации
-	NT_IMP_ASSIGN, // Блок присвоения
-	NT_IMP_LOGIC, // Блок проверки
+  NT_IMP_DECLARE, // Блок декларации
+  NT_IMP_ASSIGN, // Блок присвоения
+  NT_IMP_LOGIC, // Блок проверки
 
-	// ======= Helper tokens ========
-	INTERRUPT,
-	END,
+  // ======= Helper tokens ========
+  INTERRUPT,
+  END,
 };
 
 // Constituenta edit mode
 export enum EditMode {
-    TEXT = 'text',
-    RSLANG = 'rslang'
+  TEXT = 'text',
+  RSLANG = 'rslang'
 }
 
 // RSExpression status
 export enum ExpressionStatus {
-    UNDEFINED = 0,
-    UNKNOWN,
-    INCORRECT,
-    INCALCULABLE,
-    PROPERTY,
-    VERIFIED
+  UNDEFINED = 0,
+  UNKNOWN,
+  INCORRECT,
+  INCALCULABLE,
+  PROPERTY,
+  VERIFIED
 }
 
 export function inferStatus(parse?: ParsingStatus, value?: ValueClass): ExpressionStatus {
-    if (!parse || !value) {
-        return ExpressionStatus.UNDEFINED;
-    }
-    if (parse === ParsingStatus.UNDEF) {
-        return ExpressionStatus.UNKNOWN;
-    }
-    if (parse === ParsingStatus.INCORRECT) {
-        return ExpressionStatus.INCORRECT;
-    }
-    if (value === ValueClass.INVALID) {
-        return ExpressionStatus.INCALCULABLE;
-    }
-    if (value === ValueClass.PROPERTY) {
-        return ExpressionStatus.PROPERTY;
-    }
-    return ExpressionStatus.VERIFIED
+  if (!parse || !value) {
+    return ExpressionStatus.UNDEFINED;
+  }
+  if (parse === ParsingStatus.UNDEF) {
+    return ExpressionStatus.UNKNOWN;
+  }
+  if (parse === ParsingStatus.INCORRECT) {
+    return ExpressionStatus.INCORRECT;
+  }
+  if (value === ValueClass.INVALID) {
+    return ExpressionStatus.INCALCULABLE;
+  }
+  if (value === ValueClass.PROPERTY) {
+    return ExpressionStatus.PROPERTY;
+  }
+  return ExpressionStatus.VERIFIED
 }
 
 export function CalculateStats(schema: IRSForm) {
-    if (!schema.items) {
-        schema.stats = {
-            count_all: 0,
-            count_errors: 0,
-            count_property: 0,
-            count_incalc: 0,
-
-            count_termin: 0,
-
-            count_base: 0,
-            count_constant: 0,
-            count_structured: 0,
-            count_axiom: 0,
-            count_term: 0,
-            count_function: 0,
-            count_predicate: 0,
-            count_theorem: 0,
-        }
-        return;
-    }
+  if (!schema.items) {
     schema.stats = {
-        count_all: schema.items?.length || 0,
-        count_errors: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.parse?.status === ParsingStatus.INCORRECT ? 1 : 0) || 0,
-            0
-        ),
-        count_property: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.parse?.valueClass === ValueClass.PROPERTY ? 1 : 0) || 0,
-            0
-        ),
-        count_incalc: schema.items?.reduce(
-            (sum, cst) => sum +
-                ((cst.parse?.status === ParsingStatus.VERIFIED &&
-                    cst.parse?.valueClass === ValueClass.INVALID) ? 1 : 0) || 0,
-            0
-        ),
+      count_all: 0,
+      count_errors: 0,
+      count_property: 0,
+      count_incalc: 0,
 
-        count_termin: schema.items?.reduce(
-            (sum, cst) => (sum +
-                (cst.term?.raw ? 1 : 0) || 0),
-            0
-        ),
+      count_termin: 0,
 
-        count_base: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.BASE ? 1 : 0),
-            0
-        ),
-        count_constant: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.CONSTANT ? 1 : 0),
-            0
-        ),
-        count_structured: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.STRUCTURED ? 1 : 0),
-            0
-        ),
-        count_axiom: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.AXIOM ? 1 : 0),
-            0
-        ),
-        count_term: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.TERM ? 1 : 0),
-            0
-        ),
-        count_function: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.FUNCTION ? 1 : 0),
-            0
-        ),
-        count_predicate: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.PREDICATE ? 1 : 0),
-            0
-        ),
-        count_theorem: schema.items?.reduce(
-            (sum, cst) => sum +
-                (cst.cstType === CstType.THEOREM ? 1 : 0),
-            0
-        ),
+      count_base: 0,
+      count_constant: 0,
+      count_structured: 0,
+      count_axiom: 0,
+      count_term: 0,
+      count_function: 0,
+      count_predicate: 0,
+      count_theorem: 0
     }
+    return;
+  }
+  schema.stats = {
+    count_all: schema.items?.length || 0,
+    count_errors: schema.items?.reduce(
+      (sum, cst) => sum + (cst.parse?.status === ParsingStatus.INCORRECT ? 1 : 0) || 0, 0),
+    count_property: schema.items?.reduce(
+      (sum, cst) => sum + (cst.parse?.valueClass === ValueClass.PROPERTY ? 1 : 0) || 0, 0),
+    count_incalc: schema.items?.reduce(
+      (sum, cst) => sum +
+      ((cst.parse?.status === ParsingStatus.VERIFIED && cst.parse?.valueClass === ValueClass.INVALID) ? 1 : 0) || 0, 0),
+
+    count_termin: schema.items?.reduce(
+      (sum, cst) => (sum + (cst.term?.raw ? 1 : 0) || 0), 0),
+
+    count_base: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.BASE ? 1 : 0), 0),
+    count_constant: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.CONSTANT ? 1 : 0), 0),
+    count_structured: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.STRUCTURED ? 1 : 0), 0),
+    count_axiom: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.AXIOM ? 1 : 0), 0),
+    count_term: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.TERM ? 1 : 0), 0),
+    count_function: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.FUNCTION ? 1 : 0), 0),
+    count_predicate: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.PREDICATE ? 1 : 0), 0),
+    count_theorem: schema.items?.reduce(
+      (sum, cst) => sum + (cst.cstType === CstType.THEOREM ? 1 : 0), 0)
+  }
 }
 
 export function matchConstituenta(query: string, target?: IConstituenta) {
-    if (!target) {
-        return false;
-    } else if (target.alias.match(query)) {
-        return true;
-    } else if (target.term?.resolved?.match(query)) {
-        return true;
-    } else if (target.definition?.formal.match(query)) {
-        return true;
-    } else if (target.definition?.text.resolved?.match(query)) {
-        return true;
-    } else if (target.convention?.match(query)) {
-        return true;
-    }else {
-        return false;
-    }
-}
\ No newline at end of file
+  if (!target) {
+    return false;
+  } else if (target.alias.match(query)) {
+    return true;
+  } else if (target.term?.resolved?.match(query)) {
+    return true;
+  } else if (target.definition?.formal.match(query)) {
+    return true;
+  } else if (target.definition?.text.resolved?.match(query)) {
+    return true;
+  } else if (target.convention?.match(query)) {
+    return true;
+  } else {
+    return false;
+  }
+}
diff --git a/rsconcept/frontend/src/utils/procedures.ts b/rsconcept/frontend/src/utils/procedures.ts
index 3ecce735..d34ef8ea 100644
--- a/rsconcept/frontend/src/utils/procedures.ts
+++ b/rsconcept/frontend/src/utils/procedures.ts
@@ -1,15 +1,17 @@
-import { toast } from 'react-toastify';
-import { BackendCallback } from './backendAPI';
 import fileDownload from 'js-file-download';
+import { toast } from 'react-toastify';
+
+import { type BackendCallback } from './backendAPI';
 
 export function shareCurrentURLProc() {
   const url = window.location.href + '&share';
-  navigator.clipboard.writeText(url);
-  toast.success(`Ссылка скопирована: ${url}`);
+  navigator.clipboard.writeText(url)
+  .then(() => toast.success(`Ссылка скопирована: ${url}`))
+  .catch(console.error);
 }
 
-export async function claimOwnershipProc(
-  claim: (callback: BackendCallback) => Promise<void>,
+export function claimOwnershipProc(
+  claim: (callback: BackendCallback) => void
 ) {
   if (!window.confirm('Вы уверены, что хотите стать владельцем данной схемы?')) {
     return;
@@ -17,9 +19,9 @@ export async function claimOwnershipProc(
   claim(() => toast.success('Вы стали владельцем схемы'));
 }
 
-export async function deleteRSFormProc(
-  destroy: (callback: BackendCallback) => Promise<void>, 
-  navigate: Function
+export function deleteRSFormProc(
+  destroy: (callback: BackendCallback) => void,
+  navigate: (path: string) => void
 ) {
   if (!window.confirm('Вы уверены, что хотите удалить данную схему?')) {
     return;
@@ -30,8 +32,8 @@ export async function deleteRSFormProc(
   });
 }
 
-export async function downloadRSFormProc(
-  download: (callback: BackendCallback) => Promise<void>, 
+export function downloadRSFormProc(
+  download: (callback: BackendCallback) => void,
   fileName: string
 ) {
   download((response) => {
diff --git a/rsconcept/frontend/src/utils/staticUI.ts b/rsconcept/frontend/src/utils/staticUI.ts
index 9efdc472..fa91bcf7 100644
--- a/rsconcept/frontend/src/utils/staticUI.ts
+++ b/rsconcept/frontend/src/utils/staticUI.ts
@@ -1,4 +1,4 @@
-import { CstType, ExpressionStatus, IConstituenta, IRSForm, ParsingStatus, TokenID } from './models';
+import { CstType, ExpressionStatus, type IConstituenta, type IRSForm, ParsingStatus, TokenID } from './models';
 
 export interface IRSButtonData {
   text: string
@@ -13,177 +13,177 @@ export interface IStatusInfo {
 
 export function getTypeLabel(cst: IConstituenta) {
   if (cst.parse?.typification) {
-      return cst.parse.typification;
+    return cst.parse.typification;
   }
-  if (cst.parse?.status !==  ParsingStatus.VERIFIED) {
-      return 'N/A';
+  if (cst.parse?.status !== ParsingStatus.VERIFIED) {
+    return 'N/A';
   }
   return 'Логический';
 }
 
 export function getRSButtonData(id: TokenID): IRSButtonData {
-  switch(id) {
+  switch (id) {
   case TokenID.BOOLEAN: return {
     text: 'ℬ()',
-    tooltip: 'Булеан [Alt + E]',
+    tooltip: 'Булеан [Alt + E]'
   };
   case TokenID.DECART: return {
     text: '×',
-    tooltip: 'Декартово произведение [Shift + 8]',
+    tooltip: 'Декартово произведение [Shift + 8]'
   };
   case TokenID.PUNC_PL: return {
     text: '( )',
-    tooltip: 'Скобки вокруг выражения [ Alt + Shift + 9 ]',
+    tooltip: 'Скобки вокруг выражения [ Alt + Shift + 9 ]'
   };
   case TokenID.PUNC_SL: return {
     text: '[ ]',
-    tooltip: 'Скобки вокруг выражения [ Alt + [ ]',
+    tooltip: 'Скобки вокруг выражения [ Alt + [ ]'
   };
   case TokenID.FORALL: return {
     text: '∀',
-    tooltip: 'Квантор всеобщности [`]',
+    tooltip: 'Квантор всеобщности [`]'
   };
   case TokenID.EXISTS: return {
     text: '∃',
-    tooltip: 'Квантор существования [Shift + `]',
+    tooltip: 'Квантор существования [Shift + `]'
   };
   case TokenID.NOT: return {
     text: '¬',
-    tooltip: 'Отрицание [Alt + `]',
+    tooltip: 'Отрицание [Alt + `]'
   };
   case TokenID.AND: return {
     text: '&',
-    tooltip: 'Конъюнкция [Alt + 3 ~ Shift + 7]',
+    tooltip: 'Конъюнкция [Alt + 3 ~ Shift + 7]'
   };
   case TokenID.OR: return {
     text: '∨',
-    tooltip: 'дизъюнкция [Alt + Shift + 3]',
+    tooltip: 'дизъюнкция [Alt + Shift + 3]'
   };
   case TokenID.IMPLICATION: return {
     text: '⇒',
-    tooltip: 'импликация [Alt + 4]',
+    tooltip: 'импликация [Alt + 4]'
   };
   case TokenID.EQUIVALENT: return {
     text: '⇔',
-    tooltip: 'эквивалентность [Alt + Shift + 4]',
+    tooltip: 'эквивалентность [Alt + Shift + 4]'
   };
   case TokenID.LIT_EMPTYSET: return {
     text: '∅',
-    tooltip: 'пустое множество [Alt + X]',
+    tooltip: 'пустое множество [Alt + X]'
   };
   case TokenID.LIT_INTSET: return {
     text: 'Z',
-    tooltip: 'целые числа [Alt + Z]',
+    tooltip: 'целые числа [Alt + Z]'
   };
   case TokenID.EQUAL: return {
     text: '=',
-    tooltip: 'равенство',
+    tooltip: 'равенство'
   };
   case TokenID.NOTEQUAL: return {
     text: '≠',
-    tooltip: 'неравенство [Alt + Shift + `]',
+    tooltip: 'неравенство [Alt + Shift + `]'
   };
   case TokenID.GREATER_OR_EQ: return {
     text: '≥',
-    tooltip: 'больше или равно',
+    tooltip: 'больше или равно'
   };
   case TokenID.LESSER_OR_EQ: return {
     text: '≤',
-    tooltip: 'меньше или равно',
+    tooltip: 'меньше или равно'
   };
   case TokenID.IN: return {
     text: '∈',
-    tooltip: 'быть элементом (принадлежит) [Alt + \']',
+    tooltip: 'быть элементом (принадлежит) [Alt + \']'
   };
   case TokenID.NOTIN: return {
     text: '∉',
-    tooltip: 'не принадлежит [Alt + Shift + \']',
+    tooltip: 'не принадлежит [Alt + Shift + \']'
   };
   case TokenID.SUBSET_OR_EQ: return {
     text: '⊆',
-    tooltip: 'быть частью (нестрогое подмножество) [Alt + 2]',
+    tooltip: 'быть частью (нестрогое подмножество) [Alt + 2]'
   };
   case TokenID.SUBSET: return {
     text: '⊂',
-    tooltip: 'строгое подмножество [Alt + ;]',
+    tooltip: 'строгое подмножество [Alt + ;]'
   };
   case TokenID.NOTSUBSET: return {
     text: '⊄',
-    tooltip: 'не подмножество [Alt + Shift + 2]',
+    tooltip: 'не подмножество [Alt + Shift + 2]'
   };
   case TokenID.INTERSECTION: return {
     text: '∩',
-    tooltip: 'пересечение [Alt + Y]',
+    tooltip: 'пересечение [Alt + Y]'
   };
   case TokenID.UNION: return {
     text: '∪',
-    tooltip: 'объединение [Alt + U]',
+    tooltip: 'объединение [Alt + U]'
   };
   case TokenID.SET_MINUS: return {
     text: '\\',
-    tooltip: 'Разность множеств [Alt + 5]',
+    tooltip: 'Разность множеств [Alt + 5]'
   };
   case TokenID.SYMMINUS: return {
     text: '∆',
-    tooltip: 'Симметрическая разность [Alt + Shift + 5]',
+    tooltip: 'Симметрическая разность [Alt + Shift + 5]'
   };
   case TokenID.NT_DECLARATIVE_EXPR: return {
     text: 'D{}',
-    tooltip: 'Декларативная форма определения терма [Alt + D]',
+    tooltip: 'Декларативная форма определения терма [Alt + D]'
   };
   case TokenID.NT_IMPERATIVE_EXPR: return {
     text: 'I{}',
-    tooltip: 'императивная форма определения терма [Alt + G]',
+    tooltip: 'императивная форма определения терма [Alt + G]'
   };
   case TokenID.NT_RECURSIVE_FULL: return {
     text: 'R{}',
-    tooltip: 'рекурсивная (цикличная) форма определения терма [Alt + T]',
+    tooltip: 'рекурсивная (цикличная) форма определения терма [Alt + T]'
   };
   case TokenID.BIGPR: return {
     text: 'Pr1()',
-    tooltip: 'большая проекция [Alt + Q]',
+    tooltip: 'большая проекция [Alt + Q]'
   };
   case TokenID.SMALLPR: return {
     text: 'pr1()',
-    tooltip: 'малая проекция [Alt + W]',
+    tooltip: 'малая проекция [Alt + W]'
   };
   case TokenID.FILTER: return {
     text: 'Fi1[]()',
-    tooltip: 'фильтр [Alt + F]',
+    tooltip: 'фильтр [Alt + F]'
   };
   case TokenID.REDUCE: return {
     text: 'red()',
-    tooltip: 'множество-сумма [Alt + R]',
+    tooltip: 'множество-сумма [Alt + R]'
   };
   case TokenID.CARD: return {
     text: 'card()',
-    tooltip: 'мощность [Alt + C]',
+    tooltip: 'мощность [Alt + C]'
   };
   case TokenID.BOOL: return {
     text: 'bool()',
-    tooltip: 'синглетон [Alt + B]',
+    tooltip: 'синглетон [Alt + B]'
   };
   case TokenID.DEBOOL: return {
     text: 'debool()',
-    tooltip: 'десинглетон [Alt + V]',
+    tooltip: 'десинглетон [Alt + V]'
   };
   case TokenID.PUNC_ASSIGN: return {
     text: ':=',
-    tooltip: 'присвоение (императивный синтаксис)',
+    tooltip: 'присвоение (императивный синтаксис)'
   };
   case TokenID.PUNC_ITERATE: return {
     text: ':∈',
-    tooltip: 'перебор элементов множества (императивный синтаксис)',
+    tooltip: 'перебор элементов множества (императивный синтаксис)'
   };
   }
   return {
     text: 'undefined',
-    tooltip: 'undefined',
+    tooltip: 'undefined'
   }
 }
 
 export function getCstTypeLabel(type: CstType) {
-  switch(type) {
+  switch (type) {
   case CstType.BASE: return 'Базисное множество';
   case CstType.CONSTANT: return 'Константное множество';
   case CstType.STRUCTURED: return 'Родовая структура';
@@ -198,11 +198,11 @@ export function getCstTypeLabel(type: CstType) {
 export const CstTypeSelector = (Object.values(CstType)).map(
   (typeStr) => {
     const type = typeStr as CstType;
-    return {value: type, label: getCstTypeLabel(type)};
-});
+    return { value: type, label: getCstTypeLabel(type) };
+  });
 
 export function getCstTypePrefix(type: CstType) {
-  switch(type) {
+  switch (type) {
   case CstType.BASE: return 'X';
   case CstType.CONSTANT: return 'C';
   case CstType.STRUCTURED: return 'S';
@@ -255,11 +255,11 @@ export function getStatusInfo(status?: ExpressionStatus): IStatusInfo {
 }
 
 export function extractGlobals(expression: string): Set<string> {
-  return new Set(expression.match(/[XCSADFPT]\d+/g) || []);
+  return new Set(expression.match(/[XCSADFPT]\d+/g) ?? []);
 }
 
 export function createAliasFor(type: CstType, schema: IRSForm): string {
-  let prefix = getCstTypePrefix(type);
+  const prefix = getCstTypePrefix(type);
   if (!schema.items || schema.items.length <= 0) {
     return `${prefix}1`;
   }
@@ -271,4 +271,4 @@ export function createAliasFor(type: CstType, schema: IRSForm): string {
     return Math.max(prev, index);
   }, 1);
   return `${prefix}${index}`;
-}
\ No newline at end of file
+}
diff --git a/rsconcept/frontend/src/utils/utils.tsx b/rsconcept/frontend/src/utils/utils.tsx
index 3b930bcd..9adcb45c 100644
--- a/rsconcept/frontend/src/utils/utils.tsx
+++ b/rsconcept/frontend/src/utils/utils.tsx
@@ -1,9 +1,9 @@
 export function assertIsNode(e: EventTarget | null): asserts e is Node {
   if (!e || !('nodeType' in e)) {
-      throw new Error(`Node expected`);
+    throw new Error('Node expected');
   }
 }
 
-export function delay(ms: number) {
-  return new Promise(resolve => setTimeout(resolve, ms));
-}
\ No newline at end of file
+export async function delay(ms: number) {
+  return await new Promise(resolve => setTimeout(resolve, ms));
+}