eslint.config.js

import { includeIgnoreFile } from '@eslint/compat'
import js from '@eslint/js'
import perfectionist from 'eslint-plugin-perfectionist'
import svelte from 'eslint-plugin-svelte'
import unicorn from 'eslint-plugin-unicorn'
import { defineConfig } from 'eslint/config'
import globals from 'globals'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import ts from 'typescript-eslint'

import svelteConfig from './svelte.config.js'

const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)
const gitignorePath = path.resolve(__dirname, '.gitignore')

export default defineConfig(
	perfectionist.configs['recommended-natural'],
	js.configs.recommended,
	ts.configs.recommended,
	unicorn.configs.recommended,
	svelte.configs.recommended,
	svelte.configs.prettier,
	{
		languageOptions: {
			globals: {
				...globals.browser,
				...globals.node,
			},
		},
	},

	includeIgnoreFile(gitignorePath),

	{
		// houserules-owned files, refreshed by `npx houserules update`
		ignores: [
			'**/.claude/agents/**',
			'.claude/houserules.config.json',
			'.claude/houserules.manifest.json',
			'**/.claude/ledgers/**',
			'**/.claude/plans/**',
			'**/.claude/scripts/**',
			'.claude/settings.ci.json',
			'**/.claude/skills/**',
			'**/.claude/templates/**',
		],
	},

	{
		files: ['**/*.svelte', '**/*.svelte.ts', '**/*.svelte.js'],
		languageOptions: {
			parserOptions: {
				extraFileExtensions: ['.svelte'],
				parser: ts.parser,
				projectService: true,
				svelteConfig,
			},
		},
	},

	{
		name: 'viam/base',
		rules: {
			'no-useless-assignment': 'off',
		},
	},

	{
		name: 'viam/svelte/svelte-base',
		rules: {
			// Off because this currently has false positives
			'svelte/prefer-svelte-reactivity': 'off',
		},
	},

	{
		name: 'viam/perfectionist',
		rules: {
			'perfectionist/sort-array-includes': 'off',
			'perfectionist/sort-classes': 'off',
			'perfectionist/sort-decorators': 'off',
			'perfectionist/sort-enums': 'off',
			'perfectionist/sort-export-attributes': 'off',
			'perfectionist/sort-exports': 'off',
			'perfectionist/sort-heritage-clauses': 'off',
			'perfectionist/sort-interfaces': 'off',
			'perfectionist/sort-intersection-types': 'off',
			'perfectionist/sort-jsx-props': 'off',
			'perfectionist/sort-maps': 'off',
			'perfectionist/sort-modules': 'off',
			'perfectionist/sort-named-exports': 'off',
			'perfectionist/sort-object-types': 'off',
			'perfectionist/sort-objects': 'off',
			'perfectionist/sort-sets': 'off',
			'perfectionist/sort-switch-case': 'off',
			'perfectionist/sort-union-types': 'off',
			'perfectionist/sort-variable-declarations': 'off',

			'perfectionist/sort-imports': [
				'error',
				{
					internalPattern: [String.raw`^\$`],
				},
			],
		},
	},

	{
		name: 'viam/unicorn',
		rules: {
			'unicorn/consistent-function-scoping': 'off',
			'unicorn/custom-error-definition': 'error',
			'unicorn/escape-case': 'off',
			'unicorn/filename-case': 'off',
			'unicorn/no-for-loop': 'off',
			'unicorn/no-hex-escape': 'off',
			'unicorn/no-null': 'off',
			'unicorn/no-object-as-default-parameter': 'off',
			'unicorn/no-process-exit': 'off',
			'unicorn/no-unused-properties': 'error',
			'unicorn/no-useless-undefined': 'off',
			'unicorn/number-literal-case': 'off',
			'unicorn/numeric-separators-style': 'off',
			'unicorn/prefer-add-event-listener': 'off',
			'unicorn/prefer-blob-reading-methods': 'off',
			'unicorn/prefer-code-point': 'off',
			'unicorn/prefer-modern-math-apis': 'off',
			'unicorn/prefer-string-replace-all': 'error',
			'unicorn/prefer-switch': 'off',
			'unicorn/prefer-top-level-await': 'off',
			'unicorn/prevent-abbreviations': 'off',
			'unicorn/require-module-specifiers': 'off',
			'unicorn/prefer-global-this': 'off',
			'unicorn/no-nested-ternary': 'off',

			// TODO
			// 'unicorn/filename-case': [
			// 	'error',
			// 	{
			// 		cases: {
			// 			camelCase: true,
			// 			pascalCase: true,
			// 		},
			// 	},
			// ],
		},
	},

	{
		name: 'viam/no-barrel-imports',
		files: ['src/lib/**'],
		// The barrels themselves, which legitimately re-export their own directory.
		ignores: ['src/lib/index.ts', 'src/lib/lib.ts', 'src/lib/plugins/index.ts'],
		rules: {
			'no-restricted-imports': [
				'error',
				{
					paths: [
						{
							name: '$lib',
							message:
								"Import the module directly (e.g. '$lib/components/overlay/Portals/DashboardPortal.svelte'). '$lib' re-exports App.svelte, so reaching for it from inside src/lib creates a core <-> plugin import cycle.",
						},
						{
							name: '$lib/lib',
							message:
								"Import the module directly (e.g. '$lib/loaders/pcd'). '$lib/lib' is a published entry point, not for internal use.",
						},
						{
							name: '$lib/plugins',
							message:
								"Import the plugin module directly (e.g. '$lib/plugins/Logs/useLogs.svelte'). The barrel pulls in every plugin, including ControlWidgets, which imports @viamrobotics/test-widgets and closes an import cycle back into this package.",
						},
					],
					patterns: [
						{
							group: ['$lib/index*', '$lib/lib.*', '$lib/plugins/index*'],
							message:
								'Barrel import spelled via its index file. Import the module directly instead.',
						},
					],
				},
			],
		},
	}
)