eslint.config.js

import process from 'node:process'

import antfu from '@antfu/eslint-config'

export default antfu({
    stylistic: {
        indent: 4,
    },
    ignores: ['**/__fixtures__', '**/dist_*.js'],
    typescript: process.env.CI
        ? {
            tsconfigPath: 'tsconfig.json',
            ignoresTypeAware: [
                '.config/**/*',
                'e2e/**',
                '**/*.md/**',
            ],
            overrides: {
                'ts/consistent-type-imports': 'off',
            },
        }
        : true,
    yaml: false,
    linterOptions: {
        reportUnusedDisableDirectives: Boolean(process.env.CI),
    },
    rules: {
        'style/indent': ['error', 4, {
            offsetTernaryExpressions: false,
            // the rest is from default config: https://github.com/eslint-stylistic/eslint-stylistic/blob/main/packages/eslint-plugin/configs/customize.ts
            ArrayExpression: 1,
            CallExpression: { arguments: 1 },
            flatTernaryExpressions: false,
            FunctionDeclaration: { body: 1, parameters: 1 },
            FunctionExpression: { body: 1, parameters: 1 },
            ignoreComments: false,
            ignoredNodes: [
                'TemplateLiteral *',
                'TSUnionType',
                'TSIntersectionType',
                'TSTypeParameterInstantiation',
                'FunctionExpression > .params[decorators.length > 0]',
                'FunctionExpression > .params > :matches(Decorator, :not(:first-child))',
            ],
            ImportDeclaration: 1,
            MemberExpression: 1,
            ObjectExpression: 1,
            outerIIFEBody: 1,
            SwitchCase: 1,
            VariableDeclarator: 1,
        }],
        'curly': ['error', 'multi-line'],
        'style/brace-style': ['error', '1tbs', { allowSingleLine: true }],
        'n/prefer-global/buffer': 'off',
        'style/quotes': ['error', 'single', { avoidEscape: true }],
        'test/consistent-test-it': 'off',
        'test/prefer-lowercase-title': 'off',
        'antfu/if-newline': 'off',
        'import/no-relative-packages': 'error',
        'style/max-statements-per-line': ['error', { max: 2 }],
        'ts/no-non-null-assertion': 'error',
        'ts/no-redeclare': 'off',
        'unused-imports/no-unused-imports': 'error',
        'import/extensions': ['error', 'always', {
            ignorePackages: true,
            checkTypeImports: true,
        }],
        'no-labels': 'off',
        'no-restricted-syntax': ['error', 'WithStatement'],
        'ts/promise-function-async': 'off',
        'ts/no-unnecessary-type-assertion': 'off',
        ...(process.env.CI
            ? {
                'dot-notation': 'error',
                'ts/dot-notation': 'off',
            }
            : {}
        ),
    },
}, {
    files: ['**/*.test.ts'],
    rules: {
        'ts/no-unsafe-argument': 'off',
        'ts/no-unsafe-assignment': 'off',
        'ts/no-unsafe-call': 'off',
        'ts/no-unsafe-return': 'off',
        'ts/no-unsafe-member-access': 'off',
        'ts/unbound-method': 'off',
        'import/extensions': 'off',
    },
})