Revert "Fix NPM warnings (#1329)"

This reverts commit 1a547f1.

.eslintrc.json

@@ -0,0 +1,50 @@
+{
+    "env": {
+        "browser": true,
+        "node": true,
+        "es2021": true
+    },
+    "plugins": [
+        "@stylistic"
+    ],
+    "extends": "eslint:recommended",
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+    "ignorePatterns": [
+        "/*",
+        "!/assets"
+    ],
+    "rules": {
+        "@stylistic/indent": ["error", 4],
+        "@stylistic/linebreak-style": ["error", "unix"],
+        "@stylistic/eol-last": ["error", "always"],
+        "@stylistic/arrow-parens": ["error", "always"],
+        "@stylistic/brace-style": ["error", "1tbs"],
+        "@stylistic/comma-dangle": ["error", "always-multiline"],
+        "@stylistic/comma-spacing": ["error"],
+        "@stylistic/keyword-spacing": ["error"],
+        "@stylistic/no-multiple-empty-lines": ["error", {"max": 2, "maxEOF": 0, "maxBOF": 0}],
+        "@stylistic/no-trailing-spaces": ["error"],
+        "@stylistic/no-multi-spaces": ["error"],
+        "@stylistic/object-curly-spacing": ["error", "always"],
+        "@stylistic/quotes": ["error", "single", {"avoidEscape": true}],
+        "@stylistic/semi": ["error", "always"],
+        "@stylistic/space-before-blocks": ["error"],
+        "@stylistic/space-in-parens": ["error", "never"],
+        "camelcase": ["error", {"ignoreImports": true}],
+        "curly": ["error", "all"],
+        "eqeqeq": ["error", "always"],
+        "no-console": ["off"],
+        "no-duplicate-imports": ["error"],
+        "no-empty": ["error", {"allowEmptyCatch": true}],
+        "no-empty-function": ["error", {"allow": ["arrowFunctions", "constructors"]}],
+        "no-eval": ["error"],
+        "no-implicit-coercion": ["error"],
+        "no-implied-eval": ["error"],
+        "prefer-const": ["error"],
+        "sort-imports": ["error"],
+        "yoda": ["error", "always"]
+    }
+}

assets/app.js

@@ -1,6 +1,6 @@
 import './bootstrap.js';
 import './styles/app.scss';
-import './utils/popover.js';
+import './utils/popover';
 import '@github/markdown-toolbar-element';
 import { Application } from '@hotwired/stimulus';