Eslint rule updates

.eslintrc.json

@@ -32,7 +32,10 @@
         "jsonc",
         "unused-imports",
         "@typescript-eslint",
-        "@stylistic"
+        "@stylistic",
+        "unicorn",
+        "sonarjs",
+        "import"
     ],
     "ignorePatterns": [
         "/ext/lib/",
@@ -247,7 +250,107 @@
 
         "eslint-comments/no-unused-disable": "error",
 
-        "unused-imports/no-unused-imports": "error"
+        "unused-imports/no-unused-imports": "error",
+
+        "import/extensions": ["error", "ignorePackages"],
+
+        "unicorn/catch-error-name": ["error", {"ignore": ["^(e|error2?)$"]}],
+        "unicorn/custom-error-definition": "error",
+        "unicorn/empty-brace-spaces": "error",
+        "unicorn/error-message": "error",
+        "unicorn/expiring-todo-comments": "error",
+        "unicorn/explicit-length-check": "error",
+        "unicorn/new-for-builtins": "error",
+        "unicorn/no-abusive-eslint-disable": "error",
+        "unicorn/no-array-for-each": "error",
+        "unicorn/no-array-method-this-argument": "error",
+        "unicorn/no-array-push-push": "error",
+        "unicorn/no-array-reduce": "error",
+        "unicorn/no-console-spaces": "error",
+        "unicorn/no-document-cookie": "error",
+        "unicorn/no-empty-file": "error",
+        "unicorn/no-hex-escape": "error",
+        "unicorn/no-instanceof-array": "error",
+        "unicorn/no-invalid-remove-event-listener": "error",
+        "unicorn/no-lonely-if": "error",
+        "unicorn/no-nested-ternary": "error",
+        "unicorn/no-new-buffer": "error",
+        "unicorn/no-object-as-default-parameter": "error",
+        "unicorn/no-static-only-class": "error",
+        "unicorn/no-thenable": "error",
+        "unicorn/no-unnecessary-await": "error",
+        "unicorn/no-unnecessary-polyfills": "error",
+        "unicorn/no-unreadable-array-destructuring": "error",
+        "unicorn/no-unreadable-iife": "error",
+        "unicorn/no-useless-fallback-in-spread": "error",
+        "unicorn/no-useless-length-check": "error",
+        "unicorn/no-useless-promise-resolve-reject": "error",
+        "unicorn/no-useless-spread": "error",
+        "unicorn/no-useless-switch-case": "error",
+        "unicorn/no-useless-undefined": "error",
+        "unicorn/no-zero-fractions": "error",
+        "unicorn/prefer-array-find": "error",
+        "unicorn/prefer-array-flat": "error",
+        "unicorn/prefer-array-flat-map": "error",
+        "unicorn/prefer-array-index-of": "error",
+        "unicorn/prefer-array-some": "error",
+        "unicorn/prefer-date-now": "error",
+        "unicorn/prefer-default-parameters": "error",
+        "unicorn/prefer-dom-node-dataset": "error",
+        "unicorn/prefer-dom-node-text-content": "error",
+        "unicorn/prefer-event-target": "error",
+        "unicorn/prefer-export-from": "error",
+        "unicorn/prefer-includes": "error",
+        "unicorn/prefer-keyboard-event-key": "error",
+        "unicorn/prefer-logical-operator-over-ternary": "error",
+        "unicorn/prefer-modern-math-apis": "error",
+        "unicorn/prefer-module": "error",
+        "unicorn/prefer-native-coercion-functions": "error",
+        "unicorn/prefer-negative-index": "error",
+        "unicorn/prefer-number-properties": "error",
+        "unicorn/prefer-object-from-entries": "error",
+        "unicorn/prefer-prototype-methods": "error",
+        "unicorn/prefer-reflect-apply": "error",
+        "unicorn/prefer-regexp-test": "error",
+        "unicorn/prefer-set-has": "error",
+        "unicorn/prefer-set-size": "error",
+        "unicorn/prefer-spread": "error",
+        "unicorn/prefer-string-starts-ends-with": "error",
+        "unicorn/prefer-string-trim-start-end": "error",
+        "unicorn/prefer-switch": "error",
+        "unicorn/prefer-ternary": "error",
+        "unicorn/relative-url-style": "error",
+        "unicorn/require-array-join-separator": "error",
+        "unicorn/require-number-to-fixed-digits-argument": "error",
+        "unicorn/template-indent": "error",
+        "unicorn/throw-new-error": "error",
+
+        "sonarjs/max-switch-cases": "error",
+        "sonarjs/no-all-duplicated-branches": "error",
+        "sonarjs/no-collapsible-if": "error",
+        "sonarjs/no-collection-size-mischeck": "error",
+        "sonarjs/no-duplicated-branches": "error",
+        "sonarjs/no-element-overwrite": "error",
+        "sonarjs/no-empty-collection": "error",
+        "sonarjs/no-extra-arguments": "error",
+        "sonarjs/no-gratuitous-expressions": "error",
+        "sonarjs/no-identical-conditions": "error",
+        "sonarjs/no-identical-expressions": "error",
+        "sonarjs/no-identical-functions": "error",
+        "sonarjs/no-ignored-return": "error",
+        "sonarjs/no-inverted-boolean-check": "error",
+        "sonarjs/no-one-iteration-loop": "error",
+        "sonarjs/no-redundant-boolean": "error",
+        "sonarjs/no-redundant-jump": "error",
+        "sonarjs/no-same-line-conditional": "error",
+        "sonarjs/no-unused-collection": "error",
+        "sonarjs/no-use-of-empty-return-value": "error",
+        "sonarjs/no-useless-catch": "error",
+        "sonarjs/non-existent-operator": "error",
+        "sonarjs/prefer-immediate-return": "error",
+        "sonarjs/prefer-object-literal": "error",
+        "sonarjs/prefer-single-boolean-return": "error",
+        "sonarjs/prefer-while": "error"
     },
     "overrides": [
         {

dev/bin/build.js

@@ -195,12 +195,10 @@ async function build(buildDir, extDir, manifestUtil, variantNames, manifestPath,
                 await createZip(extDir, excludeFiles, fullFileName, sevenZipExes, onUpdate, dryRun);
             }
 
-            if (!dryRun) {
-                if (Array.isArray(fileCopies)) {
-                    for (const fileName2 of fileCopies) {
-                        const fileName2Safe = path.basename(fileName2);
-                        fs.copyFileSync(fullFileName, path.join(buildDir, fileName2Safe));
-                    }
+            if (!dryRun && Array.isArray(fileCopies)) {
+                for (const fileName2 of fileCopies) {
+                    const fileName2Safe = path.basename(fileName2);
+                    fs.copyFileSync(fullFileName, path.join(buildDir, fileName2Safe));
                 }
             }
         }

dev/build-libs.js

@@ -64,6 +64,7 @@ export async function buildLibs() {
     const schemaFileNames = fs.readdirSync(schemaDir);
     const schemas = schemaFileNames.map((schemaFileName) => {
         /** @type {import('ajv').AnySchema} */
+        // eslint-disable-next-line sonarjs/prefer-immediate-return
         const result = parseJson(fs.readFileSync(path.join(schemaDir, schemaFileName), {encoding: 'utf8'}));
         return result;
     });

dev/data-error.js

@@ -18,12 +18,14 @@
 /**
  * Schema validation error type.
  */
-class DataError extends Error {
+export class DataError extends Error {
     /**
      * @param {string} message
      */
     constructor(message) {
         super(message);
+        /** @type {string} */
+        this.name = 'DataError';
         /** @type {unknown} */
         this._data = void 0;
     }
@@ -32,7 +34,3 @@ class DataError extends Error {
     get data() { return this._data; }
     set data(value) { this._data = value; }
 }
-
-module.exports = {
-    DataError
-};

dev/generate-css-json.js

@@ -101,11 +101,11 @@ export function formatRulesJson(rules) {
     for (const {selectors, styles} of rules) {
         if (ruleIndex > 0) { result += ','; }
         result += `\n${indent1}{\n${indent2}"selectors": `;
-        if (selectors.length === 1) {
-            result += `[${JSON.stringify(selectors[0], null, 4)}]`;
-        } else {
-            result += JSON.stringify(selectors, null, 4).replace(/\n/g, '\n' + indent2);
-        }
+        result += (
+            selectors.length === 1 ?
+            `[${JSON.stringify(selectors[0], null, 4)}]` :
+            JSON.stringify(selectors, null, 4).replace(/\n/g, '\n' + indent2)
+        );
         result += `,\n${indent2}"styles": [`;
         let styleIndex = 0;
         for (const [key, value] of styles) {

dev/lib/dexie.js

@@ -15,7 +15,6 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import Dexie from 'dexie';
-import 'dexie-export-import';
+export {default as Dexie} from 'dexie';
 
-export {Dexie};
+import 'dexie-export-import';

dev/schema-validate.js

@@ -18,6 +18,7 @@
 
 import Ajv from 'ajv';
 import {readFileSync} from 'fs';
+import {fileURLToPath} from 'url';
 import {JsonSchema} from '../ext/js/data/json-schema.js';
 import {DataError} from './data-error.js';
 import {parseJson} from './json.js';
@@ -32,7 +33,7 @@ class JsonSchemaAjv {
             strictTuples: false,
             allowUnionTypes: true
         });
-        const metaSchemaPath = require.resolve('ajv/dist/refs/json-schema-draft-07.json');
+        const metaSchemaPath = fileURLToPath(import.meta.resolve('ajv/dist/refs/json-schema-draft-07.json'));
         /** @type {import('ajv').AnySchemaObject} */
         const metaSchema = parseJson(readFileSync(metaSchemaPath, {encoding: 'utf8'}));
         ajv.addMetaSchema(metaSchema);

dev/util.js

@@ -40,10 +40,8 @@ export function getAllFiles(baseDirectory, predicate = null) {
                 if (typeof predicate !== 'function' || predicate(relativeFileName, false)) {
                     results.push(relativeFileName);
                 }
-            } else if (stats.isDirectory()) {
-                if (typeof predicate !== 'function' || predicate(relativeFileName, true)) {
-                    directories.push(fullFileName);
-                }
+            } else if (stats.isDirectory() && (typeof predicate !== 'function' || predicate(relativeFileName, true))) {
+                directories.push(fullFileName);
             }
         }
     }

ext/js/accessibility/google-docs-util.js

@@ -86,6 +86,8 @@ export class GoogleDocsUtil {
         const content = document.createTextNode(text);
         const svgText = document.createElementNS('http://www.w3.org/2000/svg', 'text');
         const transform = element.getAttribute('transform') || '';
+        // Using getAttribute instead of dataset because element is an SVG element
+        // eslint-disable-next-line unicorn/prefer-dom-node-dataset
         const font = element.getAttribute('data-font-css') || '';
         const elementX = element.getAttribute('x');
         const elementY = element.getAttribute('y');

ext/js/app/frontend.js

@@ -82,9 +82,9 @@ export class Frontend {
         /** @type {?import('settings').ProfileOptions} */
         this._options = null;
         /** @type {number} */
-        this._pageZoomFactor = 1.0;
+        this._pageZoomFactor = 1;
         /** @type {number} */
-        this._contentScale = 1.0;
+        this._contentScale = 1;
         /** @type {Promise<void>} */
         this._lastShowPromise = Promise.resolve();
         /** @type {TextSourceGenerator} */
@@ -788,7 +788,7 @@ export class Frontend {
         }
         if (popupScaleRelativeToVisualViewport) {
             const {visualViewport} = window;
-            const visualViewportScale = (typeof visualViewport !== 'undefined' && visualViewport !== null ? visualViewport.scale : 1.0);
+            const visualViewportScale = (typeof visualViewport !== 'undefined' && visualViewport !== null ? visualViewport.scale : 1);
             contentScale /= visualViewportScale;
         }
         if (contentScale === this._contentScale) { return; }

ext/js/app/popup.js

@@ -68,7 +68,7 @@ export class Popup extends EventDispatcher {
         /** @type {?import('settings').OptionsContext} */
         this._optionsContext = null;
         /** @type {number} */
-        this._contentScale = 1.0;
+        this._contentScale = 1;
         /** @type {string} */
         this._targetOrigin = chrome.runtime.getURL('/').replace(/\/$/, '');
 
@@ -777,7 +777,7 @@ export class Popup extends EventDispatcher {
     _getPosition(sourceRects, writingMode, viewport) {
         sourceRects = this._convertSourceRectsCoordinateSpace(sourceRects);
         const contentScale = this._contentScale;
-        const scaleRatio = this._frameSizeContentScale === null ? 1.0 : contentScale / this._frameSizeContentScale;
+        const scaleRatio = this._frameSizeContentScale === null ? 1 : contentScale / this._frameSizeContentScale;
         this._frameSizeContentScale = contentScale;
         const frameRect = this._frame.getBoundingClientRect();
         const frameWidth = Math.max(frameRect.width * scaleRatio, this._initialWidth * contentScale);
@@ -1133,6 +1133,8 @@ class PopupError extends ExtensionError {
      */
     constructor(message, source) {
         super(message);
+        /** @type {string} */
+        this.name = 'PopupError';
         /** @type {Popup} */
         this._source = source;
     }

ext/js/app/theme-controller.js

@@ -190,9 +190,9 @@ export class ThemeController {
         if (color === null) { return; }
 
         const a = color[3];
-        if (a <= 0.0) { return; }
+        if (a <= 0) { return; }
 
-        const aInv = 1.0 - a;
+        const aInv = 1 - a;
         for (let i = 0; i < 3; ++i) {
             target[i] = target[i] * aInv + color[i] * a;
         }
@@ -212,7 +212,7 @@ export class ThemeController {
             Number.parseInt(m[1], 10),
             Number.parseInt(m[2], 10),
             Number.parseInt(m[3], 10),
-            m4 ? Math.max(0.0, Math.min(1.0, Number.parseFloat(m4))) : 1.0
+            m4 ? Math.max(0, Math.min(1, Number.parseFloat(m4))) : 1
         ];
     }
 }

ext/js/background/backend.js

@@ -702,7 +702,7 @@ export class Backend {
                 typeof chrome.tabs.getZoom === 'function'
             )) {
                 // Not supported
-                resolve({zoomFactor: 1.0});
+                resolve({zoomFactor: 1});
                 return;
             }
             chrome.tabs.getZoom(tabId, (zoomFactor) => {
@@ -1702,10 +1702,8 @@ export class Backend {
                 // NOP
             }
 
-            if (okay && !done) {
-                if (add(item)) {
-                    done = true;
-                }
+            if (okay && !done && add(item)) {
+                done = true;
             }
         };
 
@@ -2295,7 +2293,7 @@ export class Backend {
      */
     _replaceInvalidFileNameCharacters(fileName) {
         // eslint-disable-next-line no-control-regex
-        return fileName.replace(/[<>:"/\\|?*\x00-\x1F]/g, '-');
+        return fileName.replace(/[<>:"/\\|?*\u0000-\u001F]/g, '-');
     }
 
     /**

ext/js/background/offscreen-proxy.js

@@ -144,8 +144,7 @@ export class DictionaryDatabaseProxy {
      */
     async getMedia(targets) {
         const serializedMedia = /** @type {import('dictionary-database').Media<string>[]} */ (await this._offscreen.sendMessagePromise({action: 'databaseGetMediaOffscreen', params: {targets}}));
-        const media = serializedMedia.map((m) => ({...m, content: base64ToArrayBuffer(m.content)}));
-        return media;
+        return serializedMedia.map((m) => ({...m, content: base64ToArrayBuffer(m.content)}));
     }
 }
 

ext/js/background/offscreen.js

@@ -109,8 +109,7 @@ export class Offscreen {
     /** @type {import('offscreen').ApiHandler<'databaseGetMediaOffscreen'>} */
     async _getMediaHandler({targets}) {
         const media = await this._dictionaryDatabase.getMedia(targets);
-        const serializedMedia = media.map((m) => ({...m, content: arrayBufferToBase64(m.content)}));
-        return serializedMedia;
+        return media.map((m) => ({...m, content: arrayBufferToBase64(m.content)}));
     }
 
     /** @type {import('offscreen').ApiHandler<'translatorPrepareOffscreen'>} */

ext/js/core/extension-error.js

@@ -26,6 +26,8 @@ export class ExtensionError extends Error {
      */
     constructor(message) {
         super(message);
+        /** @type {string} */
+        this.name = 'ExtensionError';
         /** @type {unknown} */
         this._data = void 0;
     }