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https://github.com/Memo-2023/mana-monorepo.git
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122 lines
3.3 KiB
JavaScript
122 lines
3.3 KiB
JavaScript
/**
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* NestJS Backend ESLint configuration
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*
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* Provides TypeScript linting for NestJS backend applications.
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* Backends should have higher code quality standards since they handle
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* business logic, database operations, and API security.
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*/
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import tseslint from 'typescript-eslint';
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import globals from 'globals';
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/** @type {import('eslint').Linter.Config[]} */
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export const nestjsConfig = [
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{
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files: ['**/*.ts'],
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languageOptions: {
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parser: tseslint.parser,
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parserOptions: {
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ecmaVersion: 2022,
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sourceType: 'module',
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},
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globals: {
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...globals.node,
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...globals.jest,
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},
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},
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plugins: {
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'@typescript-eslint': tseslint.plugin,
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},
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rules: {
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// ============================================
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// ERRORS - Backend-specific strictness
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// ============================================
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// Stricter unused vars for cleaner code
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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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ignoreRestSiblings: true,
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},
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],
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// ============================================
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// WARNINGS - Best practices for backends
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// ============================================
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// Allow any but flag it - APIs should be typed
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'@typescript-eslint/no-explicit-any': 'warn',
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// Type safety recommendations
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'@typescript-eslint/no-non-null-assertion': 'warn',
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// Encourage explicit return types for public APIs
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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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allowHigherOrderFunctions: true,
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allowDirectConstAssertionInArrowFunctions: true,
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},
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],
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// Encourage explicit module boundaries
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'@typescript-eslint/explicit-module-boundary-types': [
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'warn',
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{
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allowArgumentsExplicitlyTypedAsAny: true,
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allowDirectConstAssertionInArrowFunctions: true,
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allowHigherOrderFunctions: true,
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allowTypedFunctionExpressions: true,
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},
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],
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// Consistent type imports
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'@typescript-eslint/consistent-type-imports': [
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'warn',
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{
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prefer: 'type-imports',
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fixStyle: 'inline-type-imports',
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},
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],
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// No console in production code (use logger)
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'no-console': 'warn',
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// ============================================
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// OFF - NestJS-specific exceptions
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// ============================================
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// NestJS uses decorators and DI patterns
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'@typescript-eslint/no-empty-function': 'off', // Empty lifecycle hooks are common
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// Class methods may not use 'this' in NestJS (pure service methods)
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'class-methods-use-this': 'off',
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// NestJS interface names sometimes have 'I' prefix by convention
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'@typescript-eslint/interface-name-prefix': 'off',
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// Base rule off (TS version handles)
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'no-unused-vars': 'off',
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// Allow require for dynamic imports in NestJS
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'@typescript-eslint/no-require-imports': 'off',
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},
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},
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{
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// Test files have relaxed rules
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files: ['**/*.spec.ts', '**/*.test.ts', '**/*.e2e-spec.ts'],
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rules: {
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'@typescript-eslint/no-explicit-any': 'off',
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'@typescript-eslint/no-non-null-assertion': 'off',
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'@typescript-eslint/explicit-function-return-type': 'off',
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'@typescript-eslint/explicit-module-boundary-types': 'off',
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'no-console': 'off',
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},
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},
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];
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export default nestjsConfig;
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