feat: @lexical/eslint-plugin - add a rules-of-lexical linter to help …

…with $function rules

.eslintrc.js

@@ -19,6 +19,7 @@ module.exports = {
     'fbjs',
     'plugin:react-hooks/recommended',
     'plugin:lexical/all',
+    'plugin:@lexical/all',
     'prettier',
   ],
 
@@ -79,8 +80,13 @@ module.exports = {
       },
     },
     {
-      // These aren't compiled, but they're written in module JS
-      files: ['packages/lexical-playground/esm/*.mjs'],
+      files: [
+        // These aren't compiled, but they're written in module JS
+        'packages/lexical-playground/esm/*.mjs',
+        // These are written in module JS for bootstrapping reasons, so we
+        // can use the plugin without compiling it first
+        'packages/lexical-eslint-plugin/**/*.mjs',
+      ],
       parserOptions: {
         sourceType: 'module',
       },
@@ -119,6 +125,7 @@ module.exports = {
     'react',
     'no-only-tests',
     'lexical',
+    '@lexical',
   ],
 
   // Stop ESLint from looking for a configuration file in parent folders

.flowconfig

@@ -24,6 +24,7 @@ module.name_mapper='^@lexical/clipboard$' -> '<PROJECT_ROOT>/packages/lexical-cl
 module.name_mapper='^@lexical/code$' -> '<PROJECT_ROOT>/packages/lexical-code/flow/LexicalCode.js.flow'
 module.name_mapper='^@lexical/devtools-core$' -> '<PROJECT_ROOT>/packages/lexical-devtools-core/flow/LexicalDevtoolsCore.js.flow'
 module.name_mapper='^@lexical/dragon$' -> '<PROJECT_ROOT>/packages/lexical-dragon/flow/LexicalDragon.js.flow'
+module.name_mapper='^@lexical/eslint-plugin$' -> '<PROJECT_ROOT>/packages/lexical-eslint-plugin/flow/LexicalEslintPlugin.js.flow'
 module.name_mapper='^@lexical/file$' -> '<PROJECT_ROOT>/packages/lexical-file/flow/LexicalFile.js.flow'
 module.name_mapper='^@lexical/hashtag$' -> '<PROJECT_ROOT>/packages/lexical-hashtag/flow/LexicalHashtag.js.flow'
 module.name_mapper='^@lexical/headless$' -> '<PROJECT_ROOT>/packages/lexical-headless/flow/LexicalHeadless.js.flow'

.npmrc

@@ -1 +1,2 @@
 legacy-peer-deps=true
+init-module=./scripts/npm/npm-init.js

eslint-plugin/package.json

@@ -4,6 +4,6 @@
   "description": "ESLint plugin for lexical",
   "main": "src/index.js",
   "peerDependencies": {
-    "eslint": ">=4.19.1"
+    "eslint": "^7.31.0 || ^8.0.0"
   }
 }