feat: add support for flat configs

.eslintrc.js

@@ -26,7 +26,7 @@ module.exports = {
   parserOptions: {
     sourceType: 'module',
     project: [
-      './tsconfig.eslint.json',
+      './tsconfig.json',
       './packages/*/tsconfig.json',
       /**
        * We are currently in the process of transitioning to nx's out of the box structure and
@@ -301,6 +301,7 @@ module.exports = {
         './packages/eslint-plugin-internal/src/rules/**/*.ts',
         './packages/eslint-plugin-tslint/src/rules/**/*.ts',
         './packages/eslint-plugin/src/configs/**/*.ts',
+        './packages/core/src/configs/**/*.ts',
         './packages/eslint-plugin/src/rules/**/*.ts',
       ],
       rules: {
@@ -362,6 +363,7 @@ module.exports = {
       files: [
         './packages/scope-manager/src/lib/*.ts',
         './packages/eslint-plugin/src/configs/*.ts',
+        './packages/core/src/configs/*.ts',
       ],
       rules: {
         '@typescript-eslint/internal/no-poorly-typed-ts-props': 'off',

.github/ISSUE_TEMPLATE/07-enhancement-other.yaml

@@ -24,6 +24,7 @@ body:
       description: Select the package against which you want to report the bug.
       options:
         - ast-spec
+        - core
         - eslint-plugin-tslint
         - parser
         - scope-manager

.github/renovate.json5

@@ -78,6 +78,11 @@
       matchPackagePrefixes: ['@types/jest', 'jest', '@jest'],
       groupName: 'jest',
     },
+    {
+      matchPackageNames: ['eslint'],
+      matchPackagePrefixes: ['@eslint'],
+      groupName: 'eslint',
+    },
   ],
   postUpdateOptions: [
     // run yarn dedupe to cleanup the lockfile after updates

.github/workflows/ci.yml

@@ -163,6 +163,7 @@ jobs:
         package:
           [
             'ast-spec',
+            'core',
             'eslint-plugin',
             'eslint-plugin-internal',
             'eslint-plugin-tslint',

.github/workflows/semantic-pr-titles.yml

@@ -27,6 +27,7 @@ jobs:
           scopes: |
             deps
             ast-spec
+            core
             eslint-plugin
             eslint-plugin-internal
             eslint-plugin-tslint

.vscode/settings.json

@@ -9,6 +9,8 @@
       "typescript",
       "typescriptreact"
   ],
+  // required to make the extension pickup the flat config
+  "eslint.experimental.useFlatConfig": true,
 
   // When enabled, will trim trailing whitespace when saving a file.
   "files.trimTrailingWhitespace": true,

docs/packages/Core.mdx

@@ -0,0 +1,12 @@
+---
+id: core
+sidebar_label: core
+---
+
+# `@typescript-eslint/core`
+
+> Tooling which enables you to use TypeScript with ESLint
+
+This package is the main entrypoint that you can use to consume our tooling with ESLint.
+
+// TODO(bradzacher) - docs on using the tooling