.eslintrc.cjs

module.exports = {
    env: {
        // See https://node.green/#ES2022
        es2022: true,
        node: true,
    },
    extends: 'eslint:recommended',
    parserOptions: {
        sourceType: 'module',
    },
    ignorePatterns: [
        'reference/**',
        'tmp/**',
        'data/**',
        'config/**',
    ],
    rules: {
        'array-bracket-spacing': [
            'error',
            'always',
            { objectsInArrays: false },
        ],
        'arrow-parens': [
            'error',
            'always',
        ],
        'arrow-spacing': [
            'error',
        ],
        'block-spacing': [
            'error',
        ],
        'brace-style': [
            'error',
        ],
        'capitalized-comments': [
            'warn',
            'always',
            { ignoreConsecutiveComments: true },
        ],
        'comma-dangle': [
            'error',
            {
                arrays: 'always-multiline',
                objects: 'always-multiline',
                functions: 'never',
                imports: 'never',
                exports: 'never',
            },
        ],
        'comma-spacing': [
            'error',
        ],
        'comma-style': [
            'error',
        ],
        'consistent-return': [
            'error',
        ],
        curly: [
            'error',
        ],
        'default-case-last': [
            'error',
        ],
        'eol-last': [
            'error',
        ],
        eqeqeq: [
            'error',
        ],
        'func-call-spacing': [
            'error',
        ],
        'func-style': [
            'error',
            'declaration',
            { allowArrowFunctions: true },
        ],
        'grouped-accessor-pairs': [
            'error',
            'getBeforeSet',
        ],
        'guard-for-in': [
            'error',
        ],
        'implicit-arrow-linebreak': [
            'error',
        ],
        indent: [
            'error',
            4,
            { SwitchCase: 1 },
        ],
        'key-spacing': [
            'error',
            { beforeColon: false, afterColon: true },
        ],
        'keyword-spacing': [
            'error',
        ],
        'linebreak-style': [
            'error',
            'unix',
        ],
        'lines-between-class-members': [
            'error',
            'always',
            { exceptAfterSingleLine: true },
        ],
        'max-statements-per-line': [
            'error',
            { max: 1 },
        ],
        'new-cap': [
            'error',
        ],
        'new-parens': [
            'error',
        ],
        'no-await-in-loop': [
            'off',
        ],
        'no-bitwise': [
            'warn',
        ],
        'no-caller': [
            'error',
        ],
        'no-console': [
            'warn',
        ],
        'no-constant-binary-expression': [
            'error',
        ],
        'no-duplicate-imports': [
            'error',
        ],
        'no-else-return': [
            'error',
        ],
        'no-eq-null': [
            'error',
        ],
        'no-eval': [
            'error',
        ],
        'no-extend-native': [
            'error',
        ],
        'no-floating-decimal': [
            'error',
        ],
        'no-implicit-coercion': [
            'error',
        ],
        'no-implied-eval': [
            'error',
        ],
        'no-invalid-this': [
            'error',
        ],
        'no-lonely-if': [
            'error',
        ],
        'no-loop-func': [
            'error',
        ],
        'no-mixed-operators': [
            'warn',
        ],
        'no-multi-assign': [
            'error',
        ],
        'no-multi-spaces': [
            'error',
        ],
        'no-nested-ternary': [
            'error',
        ],
        'no-new-wrappers': [
            'error',
        ],
        'no-plusplus': [
            'error',
        ],
        'no-promise-executor-return': [
            'error',
        ],
        'no-return-assign': [
            'error',
        ],
        'no-return-await': [
            'error',
        ],
        'no-sequences': [
            'error',
        ],
        'no-shadow': [
            'error',
            { builtinGlobals: true, hoist: 'all' },
        ],
        'no-template-curly-in-string': [
            'error',
        ],
        'no-throw-literal': [
            'error',
        ],
        'no-trailing-spaces': [
            'error',
        ],
        'no-undefined': [
            'error',
        ],
        'no-underscore-dangle': [
            'error',
        ],
        'no-unmodified-loop-condition': [
            'error',
        ],
        'no-unreachable-loop': [
            'error',
        ],
        'no-unused-expressions': [
            'error',
        ],
        'no-useless-computed-key': [
            'error',
        ],
        'no-useless-concat': [
            'error',
        ],
        'no-useless-constructor': [
            'error',
        ],
        'no-useless-return': [
            'error',
        ],
        'no-use-before-define': [
            'error',
            { functions: false, classes: false },
        ],
        'no-var': [
            'error',
        ],
        'no-warning-comments': [
            'warn',
            { location: 'anywhere' },
        ],
        'no-whitespace-before-property': [
            'error',
        ],
        'object-curly-spacing': [
            'error',
            'always',
        ],
        'object-shorthand': [
            'error',
            'always',
        ],
        'operator-linebreak': [
            'error',
            'before',
        ],
        // Prevents programmer errors mistakenly refering to the wrong `this`.
        'prefer-arrow-callback': [
            'error',
            {
                allowNamedFunctions: true,
                allowUnboundThis: false,
            },
        ],
        'prefer-const': [
            'error',
        ],
        'prefer-numeric-literals': [
            'error',
        ],
        'prefer-promise-reject-errors': [
            'error',
        ],
        'prefer-rest-params': [
            'error',
        ],
        quotes: [
            'error',
            'single',
            { avoidEscape: true, allowTemplateLiterals: true },
        ],
        'quote-props': [
            'error',
            'as-needed',
        ],
        radix: [
            'error',
        ],
        'require-atomic-updates': [
            'error',
        ],
        'require-await': [
            'error',
        ],
        'rest-spread-spacing': [
            'error',
            'never',
        ],
        semi: [
            'error',
            'always',
        ],
        'semi-spacing': [
            'error',
        ],
        'spaced-comment': [
            'error',
        ],
        'space-before-blocks': [
            'error',
        ],
        'space-before-function-paren': [
            'error',
            {
                anonymous: 'always',
                named: 'never',
                asyncArrow: 'never',
            },
        ],
        'space-in-parens': [
            'error',
        ],
        'space-infix-ops': [
            'error',
        ],
        'space-unary-ops': [
            'error',
            { words: true, nonwords: false },
        ],
        strict: [
            'error',
        ],
        'switch-colon-spacing': [
            'error',
        ],
        'template-curly-spacing': [
            'error',
            'always',
        ],
        'template-tag-spacing': [
            'error',
            'always',
        ],
        'wrap-iife': [
            'error',
            'outside',
        ],
    },
};