73 lines
2.3 KiB
JavaScript
73 lines
2.3 KiB
JavaScript
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#!/usr/bin/env node
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// Transpiles the Bill Tracker server's TypeScript sources to plain CommonJS for
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// the embedded Node 18.20.4 runtime (nodejs-mobile). Node 18 runs modern JS
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// syntax natively, so — unlike the old Node-12 pass — this ONLY strips
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// TypeScript; it does not rewrite dependency syntax and does not touch
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// node_modules (their JS runs as-is on Node 18).
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//
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// The server is CommonJS-with-TS: files use require()/module.exports plus
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// `import type`/`as typeof import()` for types, and require() each other with
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// EXPLICIT `.cts`/`.mts` extensions (115 .cts + 40 .mts call sites). We therefore
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// transpile each .cts/.mts file IN PLACE, keeping its original name: esbuild
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// strips the types and emits CJS, and Node 18's CommonJS loader loads unknown
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// extensions (.cts/.mts) through the default `.js` handler as CommonJS — so every
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// explicit-extension require() path keeps resolving with zero path rewriting.
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//
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// Usage: node transpile-node18.js <serverDir> [<dir> ...]
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'use strict';
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const fs = require('fs');
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const path = require('path');
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const esbuild = require('esbuild');
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const SKIP_DIRS = new Set(['.bin', 'node_modules', 'dist']);
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function loaderFor(file) {
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if (/\.(cts|mts|ts)$/.test(file)) return 'ts';
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if (/\.(cjs|js)$/.test(file)) return 'js';
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return null;
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}
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function walk(dir, cb) {
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for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {
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if (SKIP_DIRS.has(entry.name)) continue;
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if (entry.isSymbolicLink()) continue;
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const full = path.join(dir, entry.name);
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if (entry.isDirectory()) walk(full, cb);
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else if (loaderFor(entry.name)) cb(full);
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}
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}
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let count = 0;
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let failed = 0;
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for (const dir of process.argv.slice(2)) {
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if (!fs.existsSync(dir)) continue;
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walk(dir, (file) => {
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const src = fs.readFileSync(file, 'utf8');
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let out;
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try {
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out = esbuild.transformSync(src, {
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loader: loaderFor(file),
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format: 'cjs',
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target: 'node18',
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sourcefile: file,
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}).code;
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} catch (err) {
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console.error(`FAILED ${file}: ${err.message.split('\n')[0]}`);
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failed++;
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return;
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}
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if (out !== src) {
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fs.writeFileSync(file, out);
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count++;
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}
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});
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}
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if (failed) {
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console.error(`Transpile finished with ${failed} failure(s).`);
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process.exit(1);
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}
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console.log(`Transpiled ${count} file(s) to CommonJS for Node 18.`);
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