87 lines
3.1 KiB
JavaScript
87 lines
3.1 KiB
JavaScript
import { copyFile, mkdir, readdir, readFile, rm, stat, writeFile } from 'node:fs/promises';
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import { dirname, extname, join, resolve } from 'node:path';
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import { transform } from 'esbuild';
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const sourceRoot = resolve(import.meta.dirname, '..');
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const outputRoot = resolve(sourceRoot, 'dist');
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const sourceDirectories = ['public', 'utils'];
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const sourceFiles = ['config.js', 'tokens.css'];
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const totals = {
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css: { files: 0, sourceBytes: 0, outputBytes: 0 },
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js: { files: 0, sourceBytes: 0, outputBytes: 0 }
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};
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function shouldMinify(filePath) {
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const extension = extname(filePath).toLowerCase();
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return (extension === '.css' || extension === '.js') && !filePath.toLowerCase().endsWith(`.min${extension}`);
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}
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async function writeBuildFile(sourcePath, destinationPath) {
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await mkdir(dirname(destinationPath), { recursive: true });
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if (!shouldMinify(sourcePath)) {
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await copyFile(sourcePath, destinationPath);
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return;
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}
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const extension = extname(sourcePath).slice(1).toLowerCase();
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const source = await readFile(sourcePath, 'utf8');
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const result = await transform(source, {
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loader: extension,
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minify: true,
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target: 'es2018',
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charset: 'utf8',
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legalComments: 'inline'
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});
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const output = result.code.trimEnd() + '\n';
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await writeFile(destinationPath, output, 'utf8');
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totals[extension].files += 1;
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totals[extension].sourceBytes += Buffer.byteLength(source);
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totals[extension].outputBytes += Buffer.byteLength(output);
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}
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async function copyDirectory(sourceDirectory, destinationDirectory) {
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await mkdir(destinationDirectory, { recursive: true });
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for (const entry of await readdir(sourceDirectory, { withFileTypes: true })) {
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const sourcePath = join(sourceDirectory, entry.name);
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const destinationPath = join(destinationDirectory, entry.name);
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if (entry.isDirectory()) await copyDirectory(sourcePath, destinationPath);
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else if (entry.isFile()) await writeBuildFile(sourcePath, destinationPath);
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}
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}
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function formatSavings(type) {
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const total = totals[type];
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const percent = total.sourceBytes
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? Math.round((1 - total.outputBytes / total.sourceBytes) * 100)
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: 0;
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return `${type.toUpperCase()}: ${total.files} 个文件，${total.sourceBytes} → ${total.outputBytes} 字节，减少 ${percent}%`;
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}
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if (outputRoot !== resolve(sourceRoot, 'dist')) {
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throw new Error('拒绝清理预期目录之外的构建输出');
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}
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await rm(outputRoot, { recursive: true, force: true });
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await mkdir(outputRoot, { recursive: true });
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for (const entry of await readdir(sourceRoot, { withFileTypes: true })) {
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if (entry.isFile() && entry.name.endsWith('.html')) {
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await copyFile(join(sourceRoot, entry.name), join(outputRoot, entry.name));
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}
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}
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for (const file of sourceFiles) {
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await writeBuildFile(join(sourceRoot, file), join(outputRoot, file));
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}
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for (const directory of sourceDirectories) {
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const sourceDirectory = join(sourceRoot, directory);
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if ((await stat(sourceDirectory)).isDirectory()) {
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await copyDirectory(sourceDirectory, join(outputRoot, directory));
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}
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}
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console.log(`压缩构建已生成：${outputRoot}`);
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console.log(formatSavings('css'));
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console.log(formatSavings('js'));
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