@ver5/vitepress-plugin-search

npm i vitepress-plugin-search flexsearch -D

//vite.config.ts
import { SearchPlugin } from 'vitepress-plugin-search';
import { defineConfig } from 'vite';

//default options
var options = {
  ...flexSearchIndexOptions,
  previewLength: 62,
  buttonLabel: 'Search',
  placeholder: 'Search docs',
  allow: [],
  ignore: [],
  separator: ' ',
  showLogo: true
};

export default defineConfig({
  plugins: [SearchPlugin(options)]
});

import { SearchPlugin } from 'vitepress-plugin-search';
import { defineConfig } from 'vitepress';
export default defineConfig({
  vite: { plugins: [SearchPlugin(options)] }
});