eslint.config.js

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

/** @type {import('eslint').Linter.FlatConfig[]} */
export default [
    js.configs.recommended,
    ...ts.configs.strict,
    ...ts.configs.stylistic,
    ...svelte.configs['flat/recommended'],
    prettier,
    ...svelte.configs['flat/prettier'],
    {
        languageOptions: {
            globals: {
                ...globals.browser,
                ...globals.node
            }
        }
    },
    {
        files: ['**/*.ts'],
        languageOptions: {
            globals: {
                ...globals.browser,
                ...globals.node
            },
            parserOptions: {
                project: true,
                tsconfigRootDir: import.meta.dirname
            }
        }
    },
    {
        files: ['**/*.svelte'],
        languageOptions: {
            globals: {
                ...globals.browser
            },
            parser: svelteParser,
            parserOptions: {
                parser: ts.parser,
                extraFileExtensions: ['.svelte']
            }
        }
    },
    {
        rules: {
            '@typescript-eslint/no-invalid-void-type': 'off',
            'no-empty-function': 'off',
            '@typescript-eslint/no-empty-function': 'off',
            '@typescript-eslint/no-non-null-assertion': 'off',
            '@typescript-eslint/no-namespace': 'off',
            '@typescript-eslint/no-unused-vars': [
                'error',
                {
                    args: 'all',
                    argsIgnorePattern: '^_',
                    caughtErrors: 'all',
                    caughtErrorsIgnorePattern: '^_',
                    destructuredArrayIgnorePattern: '^_',
                    varsIgnorePattern: '^_',
                    ignoreRestSiblings: true
                }
            ]
        }
    },
    {
        files: ['**/*.svelte'],
        rules: {
            'no-undef': 'off'
        }
    },
    {
        ignores: ['build/', '.svelte-kit/', 'dist/']
    }
];