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HarxhitHarxhit
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fix(backend): add and configure ESLint for backend workspace (#181)
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Lines changed: 1144 additions & 1 deletion

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‎apps/backend/eslint.config.js‎

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import tseslint from 'typescript-eslint';
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import pluginN from 'eslint-plugin-n';
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import pluginImportX from 'eslint-plugin-import-x';
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import pluginPromise from 'eslint-plugin-promise';
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import pluginSecurity from 'eslint-plugin-security';
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import pluginUnicorn from 'eslint-plugin-unicorn';
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export default tseslint.config(
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// ─── Global Ignores ──────────────────────────────────────────────────────────
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{
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ignores: [
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'dist/**',
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'build/**',
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'node_modules/**',
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'coverage/**',
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'prisma/migrations/**',
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'**/*.d.ts',
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],
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},
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// ─── Base: ESLint Recommended + TypeScript ──────────────────────────────────
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...tseslint.configs.recommendedTypeChecked,
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// ─── Main Config ────────────────────────────────────────────────────────────
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{
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files: ['src/**/*.ts'],
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languageOptions: {
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parserOptions: {
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projectService: true,
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tsconfigRootDir: import.meta.dirname,
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},
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},
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plugins: {
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n: pluginN,
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'import-x': pluginImportX,
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promise: pluginPromise,
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security: pluginSecurity,
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unicorn: pluginUnicorn,
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},
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settings: {
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'import-x/resolver': {
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typescript: { project: './tsconfig.json' },
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node: true,
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},
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node: { version: '>=18.0.0' },
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},
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rules: {
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// ── TypeScript: Type Safety: currently off ─────────────────────────────────────────────
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'@typescript-eslint/no-explicit-any': 'off',
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'@typescript-eslint/no-unsafe-argument': 'off',
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'@typescript-eslint/no-unsafe-assignment': 'off',
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'@typescript-eslint/no-unsafe-call': 'off',
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'@typescript-eslint/no-unsafe-member-access': 'off',
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'@typescript-eslint/no-unsafe-return': 'off',
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'@typescript-eslint/no-non-null-assertion': 'off',
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'@typescript-eslint/no-unnecessary-type-assertion': 'off',
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'@typescript-eslint/prefer-nullish-coalescing': 'off',
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'@typescript-eslint/prefer-optional-chain': 'off',
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'@typescript-eslint/strict-boolean-expressions': 'off',
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// ── TypeScript: Async / Promises: currently off ────────────────────────────────────────
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'@typescript-eslint/no-floating-promises': 'off',
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'@typescript-eslint/no-misused-promises': 'off',
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'@typescript-eslint/await-thenable': 'off',
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'@typescript-eslint/require-await': 'off',
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'@typescript-eslint/return-await': 'off',
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// ── TypeScript: Imports ─────────────────────────────────────────────────
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'@typescript-eslint/consistent-type-imports': [
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'error',
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{ prefer: 'type-imports', fixStyle: 'inline-type-imports' },
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],
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'@typescript-eslint/consistent-type-exports': 'error',
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'@typescript-eslint/no-import-type-side-effects': 'error',
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// ── TypeScript: Code Quality ────────────────────────────────────────────
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'@typescript-eslint/no-unused-vars': [
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'error',
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{
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argsIgnorePattern: '^_',
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varsIgnorePattern: '^_',
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caughtErrorsIgnorePattern: '^_',
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},
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],
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'@typescript-eslint/explicit-function-return-type': [
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'warn',
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{
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allowExpressions: true,
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allowTypedFunctionExpressions: true,
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},
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],
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'@typescript-eslint/prefer-as-const': 'error',
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'@typescript-eslint/no-redundant-type-constituents': 'warn',
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'@typescript-eslint/no-shadow': 'error',
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'@typescript-eslint/no-use-before-define': ['error', { functions: false }],
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// ── Node.js ─────────────────────────────────────────────────────────────
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'n/no-deprecated-api': 'error',
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'n/no-extraneous-import': 'error',
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'n/no-process-exit': 'off',
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'n/prefer-global/buffer': ['error', 'always'],
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'n/prefer-global/process': ['error', 'always'],
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'n/prefer-promises/fs': 'error',
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'n/prefer-promises/dns': 'error',
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'n/no-sync': 'warn',
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// ── Imports (import-x) ──────────────────────────────────────────────────
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'import-x/no-duplicates': 'error',
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'import-x/no-cycle': 'off',
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'import-x/no-self-import': 'error',
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'import-x/first': 'error',
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'import-x/newline-after-import': 'error',
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'import-x/order': [
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'error',
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{
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groups: ['builtin', 'external', 'internal', 'parent', 'sibling', 'index', 'type'],
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'newlines-between': 'always',
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alphabetize: { order: 'asc', caseInsensitive: true },
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},
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],
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// ── Promises ────────────────────────────────────────────────────────────
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'promise/always-return': 'off',
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'promise/catch-or-return': 'off',
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'promise/no-new-statics': 'error',
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'promise/no-return-wrap': 'error',
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'promise/param-names': 'error',
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'promise/no-promise-in-callback': 'warn',
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// ── Security ────────────────────────────────────────────────────────────
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'security/detect-object-injection': 'off',
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'security/detect-non-literal-regexp': 'warn',
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'security/detect-non-literal-fs-filename': 'warn',
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'security/detect-eval-with-expression': 'error',
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'security/detect-child-process': 'warn',
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'security/detect-possible-timing-attacks': 'warn',
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// ── Unicorn ─────────────────────────────────────────────────────────────
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'unicorn/prefer-node-protocol': 'error',
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'unicorn/no-process-exit': 'off',
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'unicorn/error-message': 'off',
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'unicorn/throw-new-error': 'off',
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'unicorn/no-useless-undefined': 'off',
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'unicorn/prefer-string-slice': 'warn',
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'unicorn/no-for-loop': 'off',
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'unicorn/prefer-includes': 'warn',
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'unicorn/no-array-for-each': 'off',
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'unicorn/prefer-ternary': 'off',
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'unicorn/prevent-abbreviations': 'off',
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// ── Core ESLint ─────────────────────────────────────────────────────────
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'no-console': 'warn',
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'eqeqeq': ['error', 'always'],
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'no-var': 'error',
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'prefer-const': 'error',
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'no-throw-literal': 'error',
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'curly': ['error', 'all'],
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'object-shorthand': 'error',
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'no-lonely-if': 'warn',
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'no-nested-ternary': 'off',
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'prefer-rest-params': 'error',
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'prefer-spread': 'error',
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'no-param-reassign': [
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'error',
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{
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props: true,
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ignorePropertyModificationsFor: ['acc', 'request', 'reply'],
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},
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],
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},
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},
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// ─── Test File Overrides ────────────────────────────────────────────────────
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{
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files: ['**/*.test.ts', '**/*.spec.ts', 'src/__tests__/**/*.ts'],
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rules: {
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'@typescript-eslint/no-explicit-any': 'off',
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'@typescript-eslint/no-unsafe-assignment': 'off',
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'@typescript-eslint/no-unsafe-member-access': 'off',
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'@typescript-eslint/no-non-null-assertion': 'off',
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'@typescript-eslint/no-floating-promises': 'off',
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'security/detect-object-injection': 'off',
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'no-console': 'off',
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},
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},
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// ─── Prisma Seed / Scripts Override ────────────────────────────────────────
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{
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files: ['prisma/**/*.ts', 'scripts/**/*.ts'],
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rules: {
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'n/no-process-exit': 'off',
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'unicorn/no-process-exit': 'off',
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'no-console': 'off',
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},
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},
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);

‎apps/backend/package.json‎

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"start": "node dist/server.js",
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"test": "vitest run",
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"test:watch": "vitest",
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"lint:fix": "eslint src/ --fix",
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"lint": "eslint src/",
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"db:migrate": "prisma migrate dev",
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"db:deploy": "prisma migrate deploy",
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"devDependencies": {
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"@types/node": "^22.0.0",
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"@types/qrcode": "^1.5.0",
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"eslint": "^10.4.0",
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"eslint-import-resolver-typescript": "^4.4.4",
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"eslint-plugin-import-x": "^4.16.2",
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"eslint-plugin-n": "^18.0.1",
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"eslint-plugin-promise": "^7.3.0",
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"eslint-plugin-security": "^4.0.0",
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"eslint-plugin-unicorn": "^64.0.0",
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"pino-pretty": "^13.1.3",
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"prisma": "^6.0.0",
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"tsx": "^4.0.0",
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"typescript": "^5.4.0",
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"typescript-eslint": "^8.59.3",
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"vitest": "^2.0.0"
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}
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}
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}

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