Migrate Nx and convert ESLint to flat config (#374)

* Migrate Nx to 21

* Convert to flat ESLint

Author: eddeee888

.eslintignore

@@ -39,3 +39,5 @@ Thumbs.db
 
 .nx/cache
 .nx/workspace-data
+.cursor/rules/nx-rules.mdc
+.github/instructions/nx.instructions.md

.eslintrc.json

@@ -0,0 +1,88 @@
+import { FlatCompat } from '@eslint/eslintrc';
+import { dirname } from 'path';
+import { fileURLToPath } from 'url';
+import js from '@eslint/js';
+import nxEslintPlugin from '@nx/eslint-plugin';
+
+const compat = new FlatCompat({
+  baseDirectory: dirname(fileURLToPath(import.meta.url)),
+  recommendedConfig: js.configs.recommended,
+});
+
+export default [
+  {
+    ignores: ['**/dist'],
+  },
+  { plugins: { '@nx': nxEslintPlugin } },
+  {
+    files: ['**/*.ts', '**/*.tsx', '**/*.js', '**/*.jsx'],
+    rules: {
+      '@nx/enforce-module-boundaries': [
+        'error',
+        {
+          enforceBuildableLibDependency: true,
+          allow: [],
+          depConstraints: [
+            {
+              sourceTag: '*',
+              onlyDependOnLibsWithTags: ['*'],
+            },
+          ],
+        },
+      ],
+    },
+  },
+  ...compat
+    .config({
+      extends: [
+        'plugin:@nx/typescript',
+        // FIXME: change to flat config
+        //'plugin:@eddeee888/typescript'
+      ],
+    })
+    .map((config) => ({
+      ...config,
+      files: ['**/*.ts', '**/*.tsx', '**/*.cts', '**/*.mts'],
+      rules: {
+        ...config.rules,
+      },
+    })),
+  ...compat
+    .config({
+      extends: ['plugin:@nx/javascript'],
+    })
+    .map((config) => ({
+      ...config,
+      files: ['**/*.js', '**/*.jsx', '**/*.cjs', '**/*.mjs'],
+      rules: {
+        ...config.rules,
+      },
+    })),
+  ...compat
+    .config({
+      env: {
+        jest: true,
+      },
+    })
+    .map((config) => ({
+      ...config,
+      files: ['**/*.spec.ts', '**/*.spec.tsx', '**/*.spec.js', '**/*.spec.jsx'],
+      rules: {
+        ...config.rules,
+      },
+    })),
+  {
+    files: ['**/*.json'],
+    // Override or add rules here
+    rules: {},
+    languageOptions: {
+      parser: await import('jsonc-eslint-parser'),
+    },
+  },
+  {
+    ignores: [
+      'packages/typescript-resolver-files-e2e/src/**/*.generated.*',
+      'packages/typescript-resolver-files-e2e/src/**/*.gen.*',
+    ],
+  },
+];

.gitignore

@@ -23,7 +23,11 @@
       }
     },
     "@nx/eslint:lint": {
-      "inputs": ["default", "{workspaceRoot}/.eslintrc.json"],
+      "inputs": [
+        "default",
+        "{workspaceRoot}/.eslintrc.json",
+        "{workspaceRoot}/eslint.config.mjs"
+      ],
       "cache": true,
       "outputs": ["{options.outputFile}"],
       "options": {
@@ -42,7 +46,8 @@
       "!{projectRoot}/**/?(*.)+(spec|test).[jt]s?(x)?(.snap)",
       "!{projectRoot}/tsconfig.spec.json",
       "!{projectRoot}/jest.config.[jt]s",
-      "!{projectRoot}/src/test-setup.[jt]s"
+      "!{projectRoot}/src/test-setup.[jt]s",
+      "!{projectRoot}/eslint.config.mjs"
     ],
     "sharedGlobals": [
       "{workspaceRoot}/package.json",
@@ -52,6 +57,5 @@
   "workspaceLayout": {
     "appsDir": "packages",
     "libsDir": "packages"
-  },
-  "useLegacyCache": true
+  }
 }

eslint.config.mjs

@@ -13,45 +13,45 @@
     "@changesets/cli": "2.27.1",
     "@eddeee888/eslint-plugin": "0.0.1",
     "@eddeee888/nx-graphql-code-generator": "2.0.0",
+    "@eslint/eslintrc": "3.3.1",
     "@graphql-codegen/add": "5.0.3",
     "@graphql-codegen/cli": "5.0.4",
     "@graphql-codegen/plugin-helpers": "5.1.0",
     "@graphql-codegen/schema-ast": "4.1.0",
     "@graphql-codegen/typescript": "4.1.3",
     "@graphql-codegen/typescript-resolvers": "4.4.2",
     "@graphql-tools/merge": "9.0.4",
-    "@nx/devkit": "20.3.0",
-    "@nx/eslint": "20.3.0",
-    "@nx/eslint-plugin": "20.3.0",
-    "@nx/jest": "20.3.0",
-    "@nx/js": "20.3.0",
-    "@nx/node": "20.3.0",
-    "@nx/plugin": "20.3.0",
-    "@nx/workspace": "20.3.0",
+    "@nx/devkit": "21.3.1",
+    "@nx/eslint": "21.3.1",
+    "@nx/eslint-plugin": "21.3.1",
+    "@nx/jest": "21.3.1",
+    "@nx/js": "21.3.1",
+    "@nx/node": "21.3.1",
+    "@nx/plugin": "21.3.1",
+    "@nx/workspace": "21.3.1",
     "@swc-node/register": "1.9.2",
     "@swc/core": "1.5.7",
     "@swc/helpers": "0.5.12",
-    "@types/jest": "29.5.14",
+    "@types/jest": "30.0.0",
     "@types/micromatch": "4.0.6",
     "@types/node": "22.0.3",
-    "@typescript-eslint/eslint-plugin": "7.18.0",
-    "@typescript-eslint/parser": "7.18.0",
-    "eslint": "8.57.0",
-    "eslint-config-prettier": "9.0.0",
+    "eslint": "9.31.0",
+    "eslint-config-prettier": "10.1.8",
     "graphql": "16.10.0",
     "graphql-scalars": "1.24.0",
-    "jest": "29.7.0",
-    "jest-environment-jsdom": "29.7.0",
-    "jest-environment-node": "^29.4.3",
+    "jest": "30.0.4",
+    "jest-environment-jsdom": "30.0.4",
+    "jest-environment-node": "30.0.4",
     "jsonc-eslint-parser": "^2.1.0",
     "micromatch": "4.0.5",
-    "nx": "20.3.0",
+    "nx": "21.3.1",
     "prettier": "^2.6.2",
     "rimraf": "5.0.0",
     "ts-jest": "29.1.0",
     "ts-morph": "22.0.0",
     "ts-node": "10.9.1",
-    "typescript": "5.6.3"
+    "typescript": "5.8.3",
+    "typescript-eslint": "8.37.0"
   },
   "workspaces": [
     "packages/**"

nx.json

@@ -0,0 +1,46 @@
+import { FlatCompat } from '@eslint/eslintrc';
+import { dirname } from 'path';
+import { fileURLToPath } from 'url';
+import js from '@eslint/js';
+import baseConfig from '../../eslint.config.mjs';
+
+const compat = new FlatCompat({
+  baseDirectory: dirname(fileURLToPath(import.meta.url)),
+  recommendedConfig: js.configs.recommended,
+});
+
+export default [
+  {
+    ignores: ['**/dist'],
+  },
+  ...baseConfig,
+  {
+    files: ['**/*.ts', '**/*.tsx', '**/*.js', '**/*.jsx'],
+    // Override or add rules here
+    rules: {},
+  },
+  {
+    files: ['**/*.ts', '**/*.tsx'],
+    // Override or add rules here
+    rules: {},
+    languageOptions: {
+      parserOptions: {
+        project: ['packages/server-config/tsconfig(.*)?.json'],
+      },
+    },
+  },
+  {
+    files: ['**/*.js', '**/*.jsx'],
+    // Override or add rules here
+    rules: {},
+  },
+  {
+    files: ['**/*.json'],
+    rules: {
+      '@nx/dependency-checks': 'error',
+    },
+    languageOptions: {
+      parser: await import('jsonc-eslint-parser'),
+    },
+  },
+];

package.json

@@ -0,0 +1,28 @@
+import baseConfig from '../../eslint.config.mjs';
+
+export default [
+  {
+    ignores: ['**/dist'],
+  },
+  ...baseConfig,
+  {
+    files: ['**/*.ts', '**/*.tsx', '**/*.js', '**/*.jsx'],
+    // Override or add rules here
+    rules: {},
+  },
+  {
+    files: ['**/*.ts', '**/*.tsx'],
+    // Override or add rules here
+    rules: {},
+    languageOptions: {
+      parserOptions: {
+        project: ['packages/typescript-resolver-files-e2e/tsconfig(.*)?.json'],
+      },
+    },
+  },
+  {
+    files: ['**/*.js', '**/*.jsx'],
+    // Override or add rules here
+    rules: {},
+  },
+];