Added support for TypeScript codebases

.eslintrc.js

@@ -2,7 +2,12 @@
 
 const svelteConfig = require('./configs/svelte.js');
 
-/** @type {import('eslint').Linter.Config} */
+/**
+ * Don't import this! It is the configuration for the yeslint! code and is not
+ * meant to be used elsewhere. Please refer to the readme.
+ *
+ * @type {import('eslint').Linter.Config}
+ */
 module.exports = {
   extends: './configs/node.js',
   ignorePatterns: [ '/example/wrong.*' ],

configs/generic.js

@@ -1,5 +1,13 @@
 'use strict';
 
+let typescriptInstalled = false;
+
+try {
+  require('typescript');
+  typescriptInstalled = true;
+}
+catch { /* not installed */ }
+
 /**
  * Generic ESLint configuration for all modern JavaScript runtimes.
  *
@@ -20,9 +28,7 @@ const generic = {
   rules: {
     'no-undef': [
       'error',
-      {
+      { typeof: true },
-        typeof: true,
-      },
     ],
     'require-atomic-updates': 0,
     indent: [
@@ -47,11 +53,6 @@ const generic = {
       'error',
       'always',
     ],
-    'array-element-newline': [ 'warn' ],
-    'array-bracket-newline': [
-      'warn',
-      { minItems: 2 },
-    ],
     'arrow-body-style': [
       'error',
       'as-needed',
@@ -92,9 +93,7 @@ const generic = {
     'keyword-spacing': 'error',
     'key-spacing': [
       'warn',
-      {
+      { beforeColon: false },
-        beforeColon: false,
-      },
     ],
     'linebreak-style': [
       'error',
@@ -211,6 +210,12 @@ const generic = {
     'no-nested-ternary': 'error',
     'no-lonely-if': 'error',
   },
+  overrides: typescriptInstalled ? [ {
+    files: '**/*.ts',
+    parser: '@typescript-eslint/parser',
+    plugins: [ '@typescript-eslint' ],
+    extends: [ 'plugin:@typescript-eslint/recommended' ],
+  } ] : [],
 };
 
 module.exports = generic;

example/correct.js

@@ -11,4 +11,10 @@ module.exports = {
       console.log(password);
     },
   ],
+
+  arrays: [
+    1,
+    2,
+    3,
+  ],
 };

example/wrong.js

@@ -5,5 +5,7 @@ module.exports = {
 
   object:{spacing:'required!'},
 
-  functions: [( env )=>  console.log(env.password),function  ({password}) { console.log( password  )}]
+  functions: [( env )=>  console.log(env.password),function  ({password}) { console.log( password  )}],
+
+  arrays: [1,2,3]
 }

package.json

@@ -27,12 +27,24 @@
     "eslint-plugin-import": "^2.27.5"
   },
   "peerDependencies": {
+    "@typescript-eslint/eslint-plugin": "^6.2.0",
+    "@typescript-eslint/parser": "^6.2.1",
     "eslint": "^7.9.0 || ^8.0.0",
-    "eslint-plugin-svelte": "^2.32.4"
+    "eslint-plugin-svelte": "^2.32.4",
+    "typescript": "^5.0.0"
   },
   "peerDependenciesMeta": {
+    "@typescript-eslint/parser": {
+      "optional": true
+    },
+    "@typescript-eslint/eslint-plugin": {
+      "optional": true
+    },
     "eslint-plugin-svelte": {
       "optional": true
+    },
+    "typescript": {
+      "optional": true
     }
   },
   "devDependencies": {