import { createRequire } from 'node:module';

const sveltePkg = createRequire(import.meta.url)('svelte/package.json');

// list of svelte runtime dependencies to optimize together with svelte itself
export const SVELTE_RUNTIME_DEPENDENCIES = [
	'clsx' // avoids dev server restart after page load with npm + vite6 (see #1067)
].filter((dep) => !!sveltePkg.dependencies?.[dep]);

export const SVELTE_IMPORTS = Object.entries(sveltePkg.exports)
	.map(([name, config]) => {
		// ignore type only
		if (typeof config === 'object' && Object.keys(config).length === 1 && config.types) {
			return '';
		}
		// ignore names
		if (name === './package.json' || name === './compiler') {
			return '';
		}
		return name.replace(/^\./, 'svelte');
	})
	.filter((s) => s.length > 0);

export const SVELTE_EXPORT_CONDITIONS = ['svelte'];

export const FAQ_LINK_MISSING_EXPORTS_CONDITION =
	'https://github.com/sveltejs/vite-plugin-svelte/blob/main/docs/faq.md#missing-exports-condition';

export const LINK_TRANSFORM_WITH_PLUGIN =
	'https://github.com/sveltejs/vite-plugin-svelte/blob/main/docs/advanced-usage.md#transform-svelte-files-with-vite-plugins';

export const DEFAULT_SVELTE_EXT = ['.svelte'];
export const DEFAULT_SVELTE_MODULE_INFIX = ['.svelte.'];
export const DEFAULT_SVELTE_MODULE_EXT = ['.js', '.ts'];

export const SVELTE_VIRTUAL_STYLE_ID_REGEX = /[?&]svelte&type=style&lang.css$/;