91 lines
2.9 KiB
JavaScript
91 lines
2.9 KiB
JavaScript
import esbuild from 'esbuild';
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import { red } from 'kleur/colors';
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import glob from 'tiny-glob';
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import fs from 'fs';
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import path from 'path';
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import { pathToFileURL, fileURLToPath } from 'url';
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function escapeTemplateLiterals(str) {
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return str.replace(/\`/g, '\\`').replace(/\$\{/g, '\\${');
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}
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export default async function prebuild(...args) {
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let buildToString = args.indexOf('--to-string');
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if (buildToString !== -1) {
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args.splice(buildToString, 1);
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buildToString = true;
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}
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let minify = true;
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let minifyIdx = args.indexOf('--no-minify');
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if (minifyIdx !== -1) {
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minify = false;
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args.splice(minifyIdx, 1);
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}
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let patterns = args;
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let entryPoints = [].concat(
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...(await Promise.all(
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patterns.map((pattern) => glob(pattern, { filesOnly: true, absolute: true }))
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))
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);
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function getPrebuildURL(entryfilepath) {
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const entryURL = pathToFileURL(entryfilepath);
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const basename = path.basename(entryfilepath);
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const ext = path.extname(entryfilepath);
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const name = basename.slice(0, basename.indexOf(ext));
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const outname = `${name}.prebuilt${ext}`;
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const outURL = new URL('./' + outname, entryURL);
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return outURL;
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}
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async function prebuildFile(filepath) {
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let tscode = await fs.promises.readFile(filepath, 'utf-8');
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// If we're bundling a client directive, modify the code to match `packages/astro/src/core/client-directive/build.ts`.
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// If updating this code, make sure to also update that file.
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if (filepath.includes(`runtime${path.sep}client`)) {
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// `export default xxxDirective` is a convention used in the current client directives that we use
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// to make sure we bundle this right. We'll error below if this convention isn't followed.
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const newTscode = tscode.replace(
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/export default (.*?)Directive/,
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(_, name) =>
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`(self.Astro || (self.Astro = {})).${name} = ${name}Directive;window.dispatchEvent(new Event('astro:${name}'))`
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);
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if (newTscode === tscode) {
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console.error(
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red(
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`${filepath} doesn't follow the \`export default xxxDirective\` convention. The prebuilt output may be wrong. ` +
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`For more information, check out ${fileURLToPath(import.meta.url)}`
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)
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);
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}
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tscode = newTscode;
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}
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const esbuildresult = await esbuild.build({
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stdin: {
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contents: tscode,
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resolveDir: path.dirname(filepath),
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loader: 'ts',
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sourcefile: filepath,
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},
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format: 'iife',
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minify,
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bundle: true,
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write: false,
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});
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const code = esbuildresult.outputFiles[0].text.trim();
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const rootURL = new URL('../../', import.meta.url);
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const rel = path.relative(fileURLToPath(rootURL), filepath);
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const mod = `/**
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* This file is prebuilt from ${rel}
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* Do not edit this directly, but instead edit that file and rerun the prebuild
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* to generate this file.
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*/
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export default \`${escapeTemplateLiterals(code)}\`;`;
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const url = getPrebuildURL(filepath);
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await fs.promises.writeFile(url, mod, 'utf-8');
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}
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await Promise.all(entryPoints.map(prebuildFile));
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}
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