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MIRROR: javascript for 🐜's, a tiny runtime with big ambitions ant.themackabu.dev
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859const assert = require('node:assert');const fs = require('node:fs');const os = require('node:os');const path = require('node:path');const { createRequire } = require('node:module');const tmp = fs.realpathSync(fs.mkdtempSync(path.join(os.tmpdir(), 'ant-require-cache-')));const localRequire = createRequire(path.join(tmp, 'entry.cjs'));const file = path.join(tmp, 'config.cjs');const json = path.join(tmp, 'config.json');try { assert.strictEqual(require.cache, localRequire.cache); assert.strictEqual(Object.getPrototypeOf(require.cache), null); fs.writeFileSync(file, 'module.exports = { version: 1, module, cache: require.cache };'); const first = localRequire(file); assert.strictEqual(first.cache, require.cache); assert.strictEqual(require.cache[file], first.module); assert.strictEqual(require.cache[file].exports, first); assert.strictEqual(require.cache[file].loaded, true); assert.strictEqual(require.cache[file].filename, file); assert.strictEqual(require.cache[file].id, file); fs.writeFileSync(file, 'module.exports = { version: 2 };'); assert.strictEqual(localRequire(file), first); // The same loop used by @tailwindcss/node/require-cache. for (const dependency of [file]) delete require.cache[dependency]; assert.strictEqual(localRequire(file).version, 2); assert.strictEqual(first.version, 1); require.cache[file] = { exports: 42 }; assert.strictEqual(localRequire(file), 42); delete require.cache[file]; fs.writeFileSync(file, 'throw new Error("failed module");'); assert.throws(() => localRequire(file), /failed module/); assert.strictEqual(Object.hasOwn(require.cache, file), false); fs.writeFileSync(file, 'module.exports = 3;'); assert.strictEqual(localRequire(file), 3);
const a = path.join(tmp, 'a.cjs'); const b = path.join(tmp, 'b.cjs'); fs.writeFileSync(a, 'exports.ready = false; exports.b = require("./b.cjs"); exports.ready = true;'); fs.writeFileSync(b, 'const a = require("./a.cjs"); module.exports = { ready: a.ready, loaded: require.cache[require.resolve("./a.cjs")].loaded, a };'); const cycle = localRequire(a); assert.strictEqual(cycle.b.ready, false); assert.strictEqual(cycle.b.loaded, false); assert.strictEqual(cycle.b.a, cycle);
fs.writeFileSync(json, '{"version":1}'); assert.strictEqual(localRequire(json).version, 1); assert.strictEqual(require.cache[json].loaded, true); fs.writeFileSync(json, '{"version":2}'); assert.strictEqual(localRequire(json).version, 1); delete require.cache[json]; assert.strictEqual(localRequire(json).version, 2); console.log('require.cache tests passed');} finally { for (const name of Object.keys(require.cache)) { if (name.startsWith(tmp + path.sep)) delete require.cache[name]; } fs.rmSync(tmp, { recursive: true, force: true });}