eslint.config.js

import eslint from '@eslint/js';
import pluginImport from 'eslint-plugin-import';
import svelteEslint from 'eslint-plugin-svelte';
import globals from 'globals';
import svelteParser from 'svelte-eslint-parser';
import tsEslint from 'typescript-eslint';
import jsdoc from 'eslint-plugin-jsdoc';
import markdown from 'eslint-plugin-markdown';

const testingDSL = {
  it: 'readonly',
  expect: 'readonly',
  describe: 'readonly'
};

const ignores = [
  // Sure, let's lint our lint config... :D
  // ./eslint.config.js
  '.DS_Store',
  '.env',
  '.env.*',
  '.github',
  // On CI our PNPM store is local to the application source
  '.pnpm-store/**/*',
  '.svelte-kit/**/*',
  '.vscode',
  'node_modules/**/*',
  'build/**/*',
  'package/**/*',

  // Ignore files for PNPM, NPM and YARN
  'pnpm-lock.yaml',
  'package-lock.json',
  'yarn.lock',

  // i18n dictionaries and auto-generated data
  'src/paraglide/**/*',

  // This was imported
  'src/routes/sverdle/**'
];

/** @type {import('eslint').Linter.FlatConfig[]} */
export default [
  { ignores },
  ...markdown.configs.recommended,
  eslint.configs.recommended,
  ...tsEslint.configs.recommended,
  ...svelteEslint.configs['flat/prettier'],
  jsdoc.configs['flat/recommended'],
  {
    files: ['**/*.svelte'],
    languageOptions: {
      parser: svelteParser,
      parserOptions: {
        parser: tsEslint.parser
      },
      globals: {
        ...globals.browser
      }
    }
  },
  {
    files: ['**/*.svelte.test.ts'],
    languageOptions: {
      parser: svelteParser,
      parserOptions: {
        parser: tsEslint.parser
      },
      globals: {
        ...globals.browser,
        ...testingDSL
      }
    }
  },
  {
    files: ['**/*.ts'],
    languageOptions: {
      parser: tsEslint.parser
    }
  },
  {
    files: ['**/*.test.ts'],
    languageOptions: {
      parser: tsEslint.parser,
      globals: {
        ...testingDSL
      }
    }
  },
  {
    files: ['**/*server.ts'],
    languageOptions: {
      parser: tsEslint.parser,
      globals: {
        ...globals.node
      }
    }
  },
  {
    files: ['**/*server.test.ts'],
    languageOptions: {
      parser: tsEslint.parser,
      globals: {
        ...globals.node,
        ...testingDSL
      }
    }
  },
  {
    plugins: {
      '@typescript-eslint': tsEslint.plugin,
      import: pluginImport
    },
    rules: {
      semi: 'warn',
      'svelte/sort-attributes': 'warn'
    }
  }
];