unplugin-utils

import { createFilter, normalizePath } from 'unplugin-utils'; import type { UnpluginBuildContext, UnpluginOptions } from 'unplugin'; interface MyPluginOptions { include?: string | RegExp | (string | RegExp)[]; exclude?: string | RegExp | (string | RegExp)[]; enable?: boolean; } export default function myUnplugin(options: MyPluginOptions = {}): UnpluginOptions { const filter = createFilter(options.include, options.exclude); return { name: 'my-custom-unplugin', buildStart(this: UnpluginBuildContext) { if (!options.enable) { this.warn('My plugin is disabled.'); return; } console.log('My Unplugin build started!'); }, transform(code: string, id: string) { const normalizedId = normalizePath(id); if (!filter(normalizedId)) { return null; // Skip transformation if id does not match filter } // Example transformation: prepend a comment const transformedCode = `// Transformed by my-custom-unplugin\n${code}`; console.log(`Transformed file: ${normalizedId}`); return transformedCode; }, buildEnd() { console.log('My Unplugin build ended!'); } }; }