ESLINT Upgraded Eslint (#262)

* ESLINT Upgraded Eslint

* ESLINT Cleanup

* ESLINT Cleanup

---------

Co-authored-by: Hangjit Rai <hangjit.rai@outlook.com>

.husky/prepare-commit-msg

@@ -1,4 +1,11 @@
 #!/bin/bash
+
+# Bash sets the BASH environment variable, so if it is not set, then we
+# are running in a different shell, so manually run ourselves in BASH.
+if [ -z "${BASH:-}" ]; then
+  exec bash "$0" "$@"
+fi
+
 # Include any branches for which you wish to disable this script
 if [ -z "$BRANCHES_TO_SKIP" ]; then
     BRANCHES_TO_SKIP=(master develop staging test)

.nvmrc

@@ -1 +1 @@
-v21.1.0
+v20.15.0

eslint.config.mjs

@@ -0,0 +1,49 @@
+import globals from "globals";
+import babelParser from "@babel/eslint-parser";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [{
+    ignores: [
+        "distribution/dependencies/*.css",
+        "distribution/dependencies/*.js",
+        "**/lib/",
+        "**/jest.config.js",
+        "**/test-env.js",
+    ],
+}, ...compat.extends("eslint:recommended"), {
+    languageOptions: {
+        globals: {
+            ...globals.jest,
+            ...globals.browser,
+            ...globals.webextensions,
+            ...globals.jquery,
+            ...globals.node,
+        },
+
+        parser: babelParser,
+        ecmaVersion: 7,
+        sourceType: "module",
+
+        parserOptions: {
+            ecmaFeatures: {
+                modules: true,
+            },
+        },
+    },
+
+    rules: {
+        "linebreak-style": ["error", "unix"],
+        "no-console": "off",
+    },
+}];