mirror of
https://github.com/KuekHaoYang/KVideo.git
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kuekhaoyang
1179148031
Keep chrome69 downleveling for Android 9 WebViews, but only hard-fail on logical assignment after transpile. Regex/polyfill feature detects and minified ternaries can contain `??`/`?.` character sequences that are not optional chaining or nullish coalescing operators.
94 lines
2.4 KiB
JavaScript
94 lines
2.4 KiB
JavaScript
#!/usr/bin/env node
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import { promises as fs } from 'node:fs';
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import path from 'node:path';
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import { transform } from 'esbuild';
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// Android 9 / Amlogic TV WebViews are often Chrome 66–74.
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// chrome83 still emits `??` (Chrome 80+), which white-screens those devices.
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// chrome69 downlevels `??` / `?.` / logical assignment in application code.
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const TARGET = 'chrome69';
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// Hard-fail only on logical assignment: unambiguous and never appears in polyfill
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// feature-detect regexes (e.g. `/()??/`) or minified ternaries (`E?.3:1`).
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const UNSUPPORTED_LOGICAL_ASSIGNMENT = /(\?\?=|\|\|=|&&=)/;
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async function pathExists(filePath) {
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try {
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await fs.access(filePath);
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return true;
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} catch {
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return false;
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}
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}
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async function collectJavaScriptFiles(rootDir) {
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const entries = await fs.readdir(rootDir, { withFileTypes: true });
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const files = [];
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for (const entry of entries) {
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const entryPath = path.join(rootDir, entry.name);
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if (entry.isDirectory()) {
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files.push(...await collectJavaScriptFiles(entryPath));
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continue;
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}
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if (entry.isFile() && entry.name.endsWith('.js')) {
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files.push(entryPath);
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}
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}
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return files;
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}
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async function transpileFile(filePath) {
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const source = await fs.readFile(filePath, 'utf8');
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const result = await transform(source, {
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target: TARGET,
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loader: 'js',
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minify: true,
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legalComments: 'none',
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});
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await fs.writeFile(filePath, result.code);
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if (UNSUPPORTED_LOGICAL_ASSIGNMENT.test(result.code)) {
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throw new Error(`${filePath} still contains logical assignment syntax after ${TARGET} transpilation.`);
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}
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}
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async function main() {
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const roots = process.argv.slice(2);
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const assetRoots = roots.length > 0 ? roots : ['.next/static', '.vercel/output/static/_next/static'];
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let processedFiles = 0;
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let existingRoots = 0;
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for (const root of assetRoots) {
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const rootDir = path.resolve(process.cwd(), root);
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if (!await pathExists(rootDir)) {
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continue;
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}
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existingRoots += 1;
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const files = await collectJavaScriptFiles(rootDir);
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for (const file of files) {
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await transpileFile(file);
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processedFiles += 1;
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}
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}
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if (existingRoots === 0) {
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console.log(`No client asset directories found for ${TARGET} transpilation.`);
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return;
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}
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console.log(`Transpiled ${processedFiles} client JavaScript asset(s) for ${TARGET}.`);
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}
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main().catch((error) => {
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console.error(error);
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process.exit(1);
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});
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