chore(web): remove eslint-plugin-sonarjs

It is not compatible with eslint 8 yet:
SonarSource/eslint-plugin-sonarjs#286

language-web/.eslintrc.js

@@ -1,9 +1,40 @@
+// Loosely based on
+// https://github.com/iamturns/create-exposed-app/blob/f14e435b8ce179c89cce3eea89e56202153a53da/.eslintrc.js
 module.exports = {
   plugins: [
-    'sonarjs',
+    '@typescript-eslint',
   ],
   extends: [
-    './.eslintrc.ci.js',
-    'plugin:sonarjs/recommended',
+    'airbnb',
+    'airbnb-typescript',
+    'airbnb/hooks',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:@typescript-eslint/recommended-requiring-type-checking',
+  ],
+  parserOptions: {
+    project: './tsconfig.json',
+  },
+  rules: {
+    // https://basarat.gitbooks.io/typescript/docs/tips/defaultIsBad.html
+    'import/prefer-default-export': 'off',
+    'import/no-default-export': 'error',
+    // propTypes are for runtime validation, but we rely on TypeScript for build-time validation:
+    // https://github.com/yannickcr/eslint-plugin-react/issues/2275#issuecomment-492003857
+    'react/prop-types': 'off',
+    // Make sure switches are exhaustive: https://stackoverflow.com/a/60166264
+    'default-case': 'off',
+    '@typescript-eslint/switch-exhaustiveness-check': 'error',
+    // https://github.com/airbnb/javascript/pull/2501
+    'react/function-component-definition': ['error', {
+      namedComponents: 'function-expression',
+      namedComponents: 'function-declaration',
+    }],
+  },
+  env: {
+    browser: true,
+  },
+  ignorePatterns: [
+    '*.js',
+    'build/**/*',
   ],
 };

language-web/package.json

@@ -9,7 +9,7 @@
     "serve": "webpack serve --node-env development --hot",
     "check": "yarn run check:eslint && yarn run check:stylelint",
     "check:eslint": "eslint .",
-    "check:eslint:ci": "eslint -c ./.eslintrc.ci.js -f json -o build/eslint.json .",
+    "check:eslint:ci": "eslint -f json -o build/eslint.json .",
     "check:stylelint": "stylelint src/main/css/**/*.scss",
     "check:stylelint:ci": "stylelint -f json src/main/css/**/*.scss > build/stylelint.json"
   },
@@ -45,7 +45,6 @@
     "eslint-plugin-jsx-a11y": "^6.5.1",
     "eslint-plugin-react": "^7.27.1",
     "eslint-plugin-react-hooks": "^4.3.0",
-    "eslint-plugin-sonarjs": "^0.10.0",
     "html-webpack-plugin": "^5.5.0",
     "image-webpack-loader": "^8.0.1",
     "magic-comments-loader": "^1.4.1",

language-web/yarn.lock

@@ -4571,15 +4571,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"eslint-plugin-sonarjs@npm:^0.10.0":
-  version: 0.10.0
-  resolution: "eslint-plugin-sonarjs@npm:0.10.0"
-  peerDependencies:
-    eslint: ^5.0.0 || ^6.0.0 || ^7.0.0
-  checksum: 6ef5b2050180a612b310610d9b1f2a89508ecf41326573cd62977ad085b25a6be7e31f47eee5857fb43b4bbd1bea1454419b52545ee3cb6cb2185a1938872009
-  languageName: node
-  linkType: hard
-
 "eslint-scope@npm:5.1.1, eslint-scope@npm:^5.1.1":
   version: 5.1.1
   resolution: "eslint-scope@npm:5.1.1"
@@ -8721,7 +8712,6 @@ __metadata:
     eslint-plugin-jsx-a11y: ^6.5.1
     eslint-plugin-react: ^7.27.1
     eslint-plugin-react-hooks: ^4.3.0
-    eslint-plugin-sonarjs: ^0.10.0
     html-webpack-plugin: ^5.5.0
     image-webpack-loader: ^8.0.1
     loglevel: ^1.8.0