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eslint.config.js
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eslint.config.js
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import js from '@eslint/js';
import prettier from 'eslint-config-prettier';
import disableAutofix from 'eslint-plugin-disable-autofix';
import imports from 'eslint-plugin-import';
import svelte from 'eslint-plugin-svelte';
import globals from 'globals';
import ts from 'typescript-eslint';
const clientFiles = [
'**/client/*',
'**/client.js',
'**/client.ts',
'**/*.client.js',
'**/*.client.ts',
'**/+page.js',
'**/+page.ts',
'**/*.svelte',
'**/*.svelte.js',
'**/*.svelte.ts',
];
/** @type {import('eslint').Linter.FlatConfig} */
const config = [
// js
{
name: 'eslint/js/recommended',
files: ['*.js', '**/*.js', '*.ts', '**/*.ts', '*.svelte', '**/*.svelte'],
rules: js.configs.recommended.rules,
},
{
name: 'eslint/js/custom',
files: ['*.js', '**/*.js', '*.ts', '**/*.ts', '*.svelte', '**/*.svelte'],
rules: { 'no-throw-literal': 'error' },
},
{
name: 'eslint/js/no-console',
files: ['*.js', '**/*.js', '*.ts', '**/*.ts', '*.svelte', '**/*.svelte'],
ignores: ['**/scripts/**'],
rules: { 'no-console': 'error' },
},
// disable some autofixes so they don't change on save while in the middle of writing code
{
name: 'eslint-plugin-disable-autofix',
plugins: { 'disable-autofix': disableAutofix },
rules: { 'prefer-const': 'off', 'disable-autofix/prefer-const': ['warn', { destructuring: 'all' }] },
},
// ts
...ts.configs.recommended,
{
name: 'typescript-eslint/custom',
files: ['*.ts', '**/*.ts', '*.svelte', '**/*.svelte'],
rules: {
'@typescript-eslint/no-namespace': 'off',
'@typescript-eslint/no-unused-vars': [
'warn',
{ argsIgnorePattern: '^_', varsIgnorePattern: '^_', caughtErrorsIgnorePattern: '^_' },
],
},
},
// Note on specifying tsconfig for subdirectories:
// Setting the tsconfig path to packages/package-name/tsconfig.json: Running from root is "eslint --max-warnings 0 .". VS Code plugin finds tsconfig. However running from child directories requires "pnpm -w" with dedicated script.
// Setting the tsconfig path to tsconfig.json: Running from child directory is "eslint --max-warnings 0 .". Running from root is "pnpm --parallel --no-bail lint". VS Code plugin breaks because it can't find tsconfig.
{
name: 'typescript-eslint/custom – @samplekit/auth',
files: ['packages/auth/src'],
languageOptions: { parserOptions: { project: 'packages/auth/tsconfig.json' } },
},
{
name: 'typescript-eslint/custom – @samplekit/preprocess-markdown',
files: ['packages/preprocess-markdown/src'],
languageOptions: { parserOptions: { project: 'packages/preprocess-markdown/tsconfig.json' } },
},
{
name: 'typescript-eslint/custom – @samplekit/preprocess-shiki',
files: ['packages/preprocess-shiki/src'],
languageOptions: { parserOptions: { project: 'packages/preprocess-shiki/tsconfig.json' } },
},
{
name: 'typescript-eslint/custom – @samplekit/svelte-crop-window',
files: ['packages/svelte-crop-window/**'],
ignores: ['**/*.svelte'],
languageOptions: { parserOptions: { project: './packages/svelte-crop-window/tsconfig.json' } },
rules: { '@typescript-eslint/no-this-alias': 'off' },
},
{
name: 'typescript-eslint/custom – samplekit.dev',
files: ['sites/samplekit.dev/**'],
ignores: ['**/*.svelte'],
languageOptions: { parserOptions: { project: 'sites/samplekit.dev/tsconfig.json' } },
},
{
name: 'typescript-eslint/custom – svelte-katex',
files: ['sites/svelte-katex/**'],
ignores: ['**/*.svelte'],
languageOptions: { parserOptions: { project: 'sites/svelte-katex/tsconfig.json' } },
},
// svelte
...svelte.configs['flat/recommended'].map((c, i) => ({ ...c, name: 'svelte/flat/recommended/' + (c.name ?? i) })),
...svelte.configs['flat/prettier'].map((c, i) => ({ ...c, name: 'svelte/flat/prettier/' + (c.name ?? i) })),
{
name: 'svelte/custom',
files: ['**/*.svelte'],
languageOptions: { parserOptions: { parser: ts.parser } },
},
// globals
{
name: 'globals/client',
files: clientFiles,
languageOptions: { globals: globals.browser },
},
{
name: 'globals/server',
ignores: clientFiles,
languageOptions: { globals: globals.node },
},
{
name: 'globals/samplekit.dev',
files: ['sites/samplekit.dev/**/*.svelte'],
languageOptions: { globals: { App: 'readonly', DB: 'readonly', SvelteGeneric: 'readonly' } },
},
// prettier
{
name: 'eslint-config-prettier',
...prettier,
},
// import order
{
name: 'eslint-plugin-import',
plugins: { import: imports },
rules: {
'import/order': [
'warn',
{
groups: ['builtin', 'external', 'internal', 'unknown', 'parent', 'sibling', 'index', 'object', 'type'],
alphabetize: { order: 'asc' },
},
],
},
},
// globals
{
rules: {
'no-restricted-globals': [
'error',
{ name: 'name', message: 'Use local parameter instead.' },
{ name: 'event', message: 'Use local parameter instead.' },
{ name: 'alert', message: 'Use window.alert.' },
],
},
},
// ignores
{
name: 'ignores',
ignores: [
'sites/samplekit.dev/vite.config.ts',
'sites/*/build/',
'sites/*/.svelte-kit/',
'packages/*/dist/',
'packages/*/build/',
'packages/*/.svelte-kit/',
'sites/*/static/',
'packages/*/static/',
'sites/*/generated/',
'packages/*/generated/',
'sites/*/vite.config.js.timestamp-*',
'packages/*/vite.config.js.timestamp-*',
'sites/*/vite.config.ts.timestamp-*',
'packages/*/vite.config.ts.timestamp-*',
'wip',
],
},
];
export default config;