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Migrate ESLint to flat config for v9 compatibility

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Replaces the FlatCompat shim (which loaded .eslintrc.cjs via @eslint/eslintrc
and emitted deprecation warnings) with a native ESLint 9 flat config. Adds
typescript-eslint meta-package as the flat-config entrypoint and pins
@eslint/js to v9 to satisfy the eslint@9 peer range. Rule set is preserved
verbatim from the Phase 1A-1 plan (Task 4).
This commit is contained in:
Anton
2026-04-14 22:01:10 +03:00
parent f7d367a315
commit 9c5f834334
5 changed files with 71 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files
.eslintignore
-6
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@@ -1,6 +0,0 @@
dist/
node_modules/
ClientApp/
wwwroot/
*.cjs
pnpm-lock.yaml
.eslintrc.cjs
-34
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@@ -1,34 +0,0 @@
/** @type {import('eslint').Linter.Config} */
module.exports = {
root: true,
parser: "@typescript-eslint/parser",
parserOptions: {
ecmaVersion: 2023,
sourceType: "module",
project: "./tsconfig.json",
ecmaFeatures: { jsx: true },
},
plugins: ["@typescript-eslint", "unused-imports"],
extends: [
"eslint:recommended",
"plugin:@typescript-eslint/recommended",
],
rules: {
"@typescript-eslint/no-unused-vars": "off",
"unused-imports/no-unused-imports": "error",
"unused-imports/no-unused-vars": [
"warn",
{
vars: "all",
varsIgnorePattern: "^_",
args: "after-used",
argsIgnorePattern: "^_",
},
],
"@typescript-eslint/consistent-type-imports": ["error", { prefer: "type-imports" }],
"@typescript-eslint/no-explicit-any": "warn",
"@typescript-eslint/no-non-null-assertion": "warn",
"no-console": ["warn", { allow: ["warn", "error"] }],
},
ignorePatterns: ["dist/", "node_modules/", "ClientApp/", "wwwroot/", "*.cjs"],
};
eslint.config.js
+45 -27
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@@ -1,37 +1,55 @@
// ESLint v9 flat-config shim that loads the legacy `.eslintrc.cjs` via FlatCompat.
// The plan (`docs/superpowers/plans/2026-04-14-phase-1a1-skeleton.md`, Task 4)
// specifies `.eslintrc.cjs` verbatim, but ESLint v9 requires a flat config file
// to be present. This shim preserves the plan's rule set without modifying
// package.json's `lint` script. A future batch can migrate fully to flat config.
import { FlatCompat } from "@eslint/eslintrc";
// ESLint v9 flat config. Mirrors the rule set from
// docs/superpowers/plans/2026-04-14-phase-1a1-skeleton.md (Task 4).
import js from "@eslint/js";
import { createRequire } from "node:module";
import { fileURLToPath } from "node:url";
import path from "node:path";
const require = createRequire(import.meta.url);
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const legacyConfig = require("./.eslintrc.cjs");
const compat = new FlatCompat({
baseDirectory: __dirname,
resolvePluginsRelativeTo: __dirname,
recommendedConfig: js.configs.recommended,
});
import tseslint from "typescript-eslint";
import unusedImports from "eslint-plugin-unused-imports";
export default [
{
ignores: [
"dist/",
"node_modules/",
"ClientApp/",
"wwwroot/",
"dist/**",
"node_modules/**",
"ClientApp/**",
"wwwroot/**",
"**/*.cjs",
"pnpm-lock.yaml",
],
},
...compat.config(legacyConfig),
js.configs.recommended,
...tseslint.configs.recommended,
{
files: ["src/**/*.{ts,tsx}"],
languageOptions: {
parser: tseslint.parser,
parserOptions: {
ecmaVersion: 2023,
sourceType: "module",
project: "./tsconfig.json",
ecmaFeatures: { jsx: true },
},
},
plugins: {
"unused-imports": unusedImports,
},
rules: {
"@typescript-eslint/no-unused-vars": "off",
"unused-imports/no-unused-imports": "error",
"unused-imports/no-unused-vars": [
"warn",
{
vars: "all",
varsIgnorePattern: "^_",
args: "after-used",
argsIgnorePattern: "^_",
},
],
"@typescript-eslint/consistent-type-imports": [
"error",
{ prefer: "type-imports" },
],
"@typescript-eslint/no-explicit-any": "warn",
"@typescript-eslint/no-non-null-assertion": "warn",
"no-console": ["warn", { allow: ["warn", "error"] }],
},
},
];
package.json
+2
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@@ -24,6 +24,7 @@
"zod": "^3.23.0"
},
"devDependencies": {
"@eslint/js": "^9.39.4",
"@types/node": "^24.0.0",
"@typescript-eslint/eslint-plugin": "^8.0.0",
"@typescript-eslint/parser": "^8.0.0",
@@ -31,6 +32,7 @@
"eslint": "^9.0.0",
"eslint-plugin-unused-imports": "^4.0.0",
"typescript": "^5.5.0",
"typescript-eslint": "^8.58.2",
"vite": "^6.0.0",
"vitest": "^3.0.0"
}
pnpm-lock.yaml
Generated
+24
View File
@@ -12,6 +12,9 @@ importers:
specifier: ^3.23.0
version: 3.25.76
devDependencies:
'@eslint/js':
specifier: ^9.39.4
version: 9.39.4
'@types/node':
specifier: ^24.0.0
version: 24.12.2
@@ -33,6 +36,9 @@ importers:
typescript:
specifier: ^5.5.0
version: 5.9.3
typescript-eslint:
specifier: ^8.58.2
version: 8.58.2(eslint@9.39.4)(typescript@5.9.3)
vite:
specifier: ^6.0.0
version: 6.4.2(@types/node@24.12.2)
@@ -927,6 +933,13 @@ packages:
resolution: {integrity: sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==}
engines: {node: '>= 0.8.0'}
typescript-eslint@8.58.2:
resolution: {integrity: sha512-V8iSng9mRbdZjl54VJ9NKr6ZB+dW0J3TzRXRGcSbLIej9jV86ZRtlYeTKDR/QLxXykocJ5icNzbsl2+5TzIvcQ==}
engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
peerDependencies:
eslint: ^8.57.0 || ^9.0.0 || ^10.0.0
typescript: '>=4.8.4 <6.1.0'
typescript@5.9.3:
resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
engines: {node: '>=14.17'}
@@ -1835,6 +1848,17 @@ snapshots:
dependencies:
prelude-ls: 1.2.1
typescript-eslint@8.58.2(eslint@9.39.4)(typescript@5.9.3):
dependencies:
'@typescript-eslint/eslint-plugin': 8.58.2(@typescript-eslint/parser@8.58.2(eslint@9.39.4)(typescript@5.9.3))(eslint@9.39.4)(typescript@5.9.3)
'@typescript-eslint/parser': 8.58.2(eslint@9.39.4)(typescript@5.9.3)
'@typescript-eslint/typescript-estree': 8.58.2(typescript@5.9.3)
'@typescript-eslint/utils': 8.58.2(eslint@9.39.4)(typescript@5.9.3)
eslint: 9.39.4
typescript: 5.9.3
transitivePeerDependencies:
- supports-color
typescript@5.9.3: {}
undici-types@7.16.0: {}