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

export default ts.config(
	js.configs.recommended,
	...ts.configs.recommended,
	...svelte.configs['flat/recommended'],
	prettier,
	...svelte.configs['flat/prettier'],
	{
		languageOptions: {
			globals: {
				...globals.browser,
				...globals.node
			}
		}
	},
	{
		rules: {
			'@typescript-eslint/no-unused-vars': [
				'error',
				{ argsIgnorePattern: '^_', varsIgnorePattern: '^_' }
			],
			'@typescript-eslint/consistent-type-imports': [
				'warn',
				{ prefer: 'type-imports', fixStyle: 'separate-type-imports' }
			],
			// console.warn/console.error are allowed for server-side observability
			// (logging dispatch failures, audit fallbacks). console.log is still flagged.
			'no-console': ['warn', { allow: ['warn', 'error'] }],
			// SvelteMap / SvelteSet only matter inside .svelte rune state. The
			// stores layer uses plain Maps as caches that the runtime does not
			// need to track reactively (consumers re-read via $derived). Disable
			// project-wide to match the pre-existing repo state, where these
			// were never enforced.
			'svelte/prefer-svelte-reactivity': 'off'
		}
	},
	{
		files: ['**/*.svelte', '**/*.svelte.ts', '**/*.svelte.js'],
		languageOptions: {
			parserOptions: {
				parser: ts.parser
			}
		},
		rules: {
			'svelte/no-navigation-without-resolve': 'off',
			'svelte/prefer-writable-derived': 'off'
		}
	},
	{
		ignores: ['build/', '.svelte-kit/', 'dist/', 'node_modules/', 'coverage/']
	}
);