Yishen Tu
07bbec7a90
* chore: reduce production bundle below 5 MB * test: support npm paths in bundle assertion * test: stabilize OpenCode history retry coverage
50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
const { promises: fs } = require('node:fs');
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const path = require('node:path');
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const { minify } = require('terser');
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const preservedComment = /^!|@preserve|@license|@cc_on/i;
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async function minifyProductionBundle(source) {
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const result = await minify(source, {
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compress: {
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passes: 3,
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toplevel: true,
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},
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ecma: 2022,
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format: {
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comments: preservedComment,
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},
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mangle: {
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toplevel: true,
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},
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module: false,
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});
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if (typeof result.code !== 'string') {
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throw new Error('Terser did not produce a production bundle');
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}
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return result.code;
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}
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function createTerserProductionBundlePlugin(outputPaths) {
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return {
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name: 'terser-production-bundle',
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setup(build) {
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build.onEnd(async (result) => {
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if (result.errors.length > 0) return;
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const workingDirectory = build.initialOptions.absWorkingDir ?? process.cwd();
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for (const outputPath of outputPaths) {
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const absolutePath = path.resolve(workingDirectory, outputPath);
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const source = await fs.readFile(absolutePath, 'utf8');
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const minified = await minifyProductionBundle(source);
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await fs.writeFile(absolutePath, `${minified}\n`, 'utf8');
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}
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});
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},
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};
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}
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module.exports = {
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createTerserProductionBundlePlugin,
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minifyProductionBundle,
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};
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