eslint.config.js

import eslint from '@eslint/js';
import eslintPluginSvelte from 'eslint-plugin-svelte';
import eslintPrettierConfig from 'eslint-config-prettier';
import globals from 'globals';
import svelteParser from 'svelte-eslint-parser';
import tsEslint from 'typescript-eslint';

export default tsEslint.config(
    eslint.configs.recommended,
    ...eslintPluginSvelte.configs['flat/recommended'],
    ...eslintPluginSvelte.configs['flat/prettier'],
    ...tsEslint.configs.recommended,
    {
        files: ['src/**/*.svelte'],
        languageOptions: {
            parser: svelteParser,
            parserOptions: {
                parser: tsEslint.parser,
                extraFileExtensions: ['.svelte'],
            },
        },
    },
    {
        languageOptions: { globals: { ...globals.browser, ...globals.node } },
        rules: {
            '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
            'no-constant-binary-expression': 'error',
            'no-constructor-return': 'error',
            'no-duplicate-imports': 'error',
            'no-new-native-nonconstructor': 'error',
            'no-promise-executor-return': 'error',
            'no-self-assign': 'off',
            'no-self-compare': 'error',
            'no-template-curly-in-string': 'error',
            'no-unmodified-loop-condition': 'error',
            'no-unreachable-loop': 'error',
            'no-unused-private-class-members': 'error',
            'no-unused-vars': 'off',
            'require-atomic-updates': 'error',
            'block-scoped-var': 'error',
            'class-methods-use-this': 'error',
            'consistent-this': ['error', 'self'],
            curly: ['error', 'multi', 'consistent'],
            'default-case': 'error',
            'dot-notation': 'error',
            eqeqeq: 'error',
            'func-style': ['error', 'declaration'],
            'init-declarations': 'error',
            'logical-assignment-operators': 'error',
            'new-cap': 'error',
            'no-alert': 'warn',
            'no-array-constructor': 'error',
            'no-caller': 'error',
            'no-console': 'warn',
            'no-else-return': 'error',
            'no-empty-function': 'error',
            'no-empty-static-block': 'error',
            'no-eq-null': 'error',
            'no-eval': 'error',
            'no-extend-native': 'error',
            'no-extra-bind': 'error',
            'no-implicit-coercion': 'error',
            'no-implicit-globals': 'error',
            'no-implied-eval': 'error',
            'no-invalid-this': 'off',
            'no-iterator': 'error',
            'no-label-var': 'error',
            'no-lone-blocks': 'error',
            'no-lonely-if': 'error',
            'no-loop-func': 'error',
            'no-nested-ternary': 'warn',
            'no-new': 'error',
            'no-new-func': 'error',
            'no-new-object': 'error',
            'no-new-wrappers': 'error',
            'no-proto': 'error',
            'no-return-assign': 'error',
            'no-script-url': 'error',
            'no-sequences': 'error',
            'no-throw-literal': 'error',
            'no-undef-init': 'error',
            'no-unneeded-ternary': 'error',
            'no-unused-expressions': 'error',
            'no-useless-call': 'error',
            'no-useless-computed-key': 'error',
            'no-useless-concat': 'error',
            'no-useless-constructor': 'error',
            'no-useless-rename': 'error',
            'no-var': 'error',
            'operator-assignment': 'error',
            'prefer-arrow-callback': 'warn',
            'prefer-const': 'error',
            'prefer-exponentiation-operator': 'warn',
            'prefer-named-capture-group': 'error',
            'prefer-numeric-literals': 'error',
            'prefer-object-has-own': 'error',
            'prefer-object-spread': 'error',
            'prefer-rest-params': 'error',
            'prefer-spread': 'error',
            'prefer-template': 'error',
            radix: 'error',
            'require-await': 'error',
            'sort-imports': ['error', { allowSeparatedGroups: true }],
            'spaced-comment': ['error', 'always', { markers: ['/'] }],
            yoda: ['warn', 'never', { exceptRange: true }],
        },
    },
    { ignores: ['.svelte-kit/**/*', 'build/**/*', 'drizzle/**/*', 'node_modules/**/*'] },
    eslintPrettierConfig,
);