pre-fetch-plugin/dist/core/utils.js

A pre-fetch plugin for Vite and Webpack

import path from 'path';
import esbuild from 'esbuild';
export async function buildScript() {
    const scriptPath = path.resolve(__dirname, '../script/pre-fetch-script.ts');
    const result = await esbuild.build({
        entryPoints: [scriptPath],
        write: false,
        bundle: true,
        minify: true,
        format: 'iife',
        target: 'es2018',
    });
    return result.outputFiles[0].text;
}
export async function injectScriptToHtml(html, options) {
    const script = await buildScript();
    const optionsScript = `<script>window.__PRE_FETCH_OPTIONS__ = ${JSON.stringify(options)};</script>`;
    const asyncScript = `<script async>${script}</script>`;
    return html.replace('</head>', `${optionsScript}${asyncScript}</head>`);
}