Updated dependencies and version bump to 2.4.0-rc1

WE2-1018

- All dependencies updated
- Version bump to 2.4.0-rc1
- Version in package.json can now have a release candidate suffix which will be excluded in the extension manifest
- Migrated `eslint` to the new flat config file format
- The `@typescript-eslint/eslint-plugin` and `@typescript-eslint/parser` packages are deprecated, changed to the new `typescript-eslint` package which contains both.
- New dependency `@stylistic/eslint-plugin-ts` - Some linter rules have been deprecated or removed from the `typescript-eslint` project and migrated to `@stylistic`, for example the `semi` rule.
- Fixed some minor linter errors
- Added additional linter rule overrides. These rules should be checked separately and might require fixes in the code.
- Renamed `rollup.config.js` to `rollup.config.mjs` as it was a ES6 module and not a CommonJS file
- Removed `findFiles` from `build-utils.mjs`. It was a promise wrapper for `glob`. After updating `glob`, it now returns a promise by itself, so the wrapper was unnecessary.
- Moved `bootstrap` from `devDependencies` to `dependencies`, which should now correctly reflect how it's used.

Signed-off-by: Tanel Metsar <taneltm@users.noreply.github.com>

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
 
     - uses: actions/setup-node@v4
       with:
-        node-version: '16.x'
+        node-version: '20.x'
 
     - name: Cache Node.js modules
       uses: actions/cache@v4

eslint.config.mjs

@@ -0,0 +1,76 @@
+// @ts-check
+import globals from "globals";
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+import stylisticTs from '@stylistic/eslint-plugin-ts';
+
+export default tseslint.config(
+  {
+    extends: [
+      eslint.configs.recommended,
+      tseslint.configs.recommendedTypeChecked,
+      tseslint.configs.stylisticTypeChecked,
+    ],
+
+    files: ["src/**/*.ts"],
+
+    ignores: [
+      "bin/",
+      "dist/",
+      "lib/**/*",
+      "**/__tests__/**/*"
+    ],
+
+    plugins: {
+      '@stylistic/ts': stylisticTs,
+      '@typescript-eslint': tseslint.plugin,
+    },
+
+    languageOptions: {
+      sourceType: "module",
+      globals: {
+          ...globals.browser,
+          ...globals.node,
+          ...globals.es2021,
+          ...globals.webextensions,
+      },
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+    },
+
+    rules: {
+      "quotes":                "error",
+      "key-spacing":           ["error", { "align": "value" }],
+      "comma-dangle":          ["error", "only-multiline"],
+      "object-curly-spacing":  ["error", "always"],
+      "array-bracket-spacing": "error",
+      "indent":                ["error", 2, { "SwitchCase": 1 }],
+      "sort-imports":          ["error", { allowSeparatedGroups: true }],
+
+      "@stylistic/ts/semi": "error",
+
+      "@typescript-eslint/array-type": ["error", { default: "generic" }],
+
+      // The following rules override the default "error" setting.
+      // These cases should be investigated and the overrides 
+      // should either be removed or set to "off".
+      "@typescript-eslint/no-explicit-any":              "warn",
+      "@typescript-eslint/no-floating-promises":         "warn",
+      "@typescript-eslint/no-unsafe-argument":           "warn",
+      "@typescript-eslint/no-unsafe-assignment":         "warn",
+      "@typescript-eslint/no-unsafe-member-access":      "warn",
+      "@typescript-eslint/no-unused-expressions":        "warn",
+      "@typescript-eslint/no-unsafe-return":             "warn",
+      "@typescript-eslint/no-unsafe-call":               "warn",
+      "@typescript-eslint/prefer-promise-reject-errors": "warn",
+      "@typescript-eslint/prefer-regexp-exec":           "warn",
+      "@typescript-eslint/prefer-nullish-coalescing":    "warn",
+      "@typescript-eslint/consistent-type-definitions":  "warn",
+      "@typescript-eslint/no-misused-promises":          "warn",
+      "@typescript-eslint/dot-notation":                 "warn",
+      "@typescript-eslint/restrict-plus-operands":       "warn",
+    },
+  },
+);

jest.config.js

@@ -1,8 +1,6 @@
-/* eslint-disable @typescript-eslint/no-var-requires */
 const { pathsToModuleNameMapper } = require("ts-jest");
 const { compilerOptions } = require("./tsconfig");
 
-/** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
 module.exports = {
   preset:           "ts-jest",
   testEnvironment:  "node",