1import { spawnPromisified } from '../common/index.mjs'; 2import * as fixtures from '../common/fixtures.mjs'; 3import assert from 'node:assert'; 4import { execPath } from 'node:process'; 5import { describe, it } from 'node:test'; 6 7describe('Worker threads do not spawn infinitely', { concurrency: true }, () => { 8 it('should not trigger an infinite loop when using a loader exports no recognized hooks', async () => { 9 const { code, signal, stdout, stderr } = await spawnPromisified(execPath, [ 10 '--no-warnings', 11 '--experimental-loader', 12 fixtures.fileURL('empty.js'), 13 '--eval', 14 'setTimeout(() => console.log("hello"),99)', 15 ]); 16 17 assert.strictEqual(stderr, ''); 18 assert.match(stdout, /^hello\r?\n$/); 19 assert.strictEqual(code, 0); 20 assert.strictEqual(signal, null); 21 }); 22 23 it('should support a CommonJS entry point and a loader that imports a CommonJS module', async () => { 24 const { code, signal, stdout, stderr } = await spawnPromisified(execPath, [ 25 '--no-warnings', 26 '--experimental-loader', 27 fixtures.fileURL('es-module-loaders/loader-with-dep.mjs'), 28 fixtures.path('print-delayed.js'), 29 ]); 30 31 assert.strictEqual(stderr, ''); 32 assert.match(stdout, /^delayed\r?\n$/); 33 assert.strictEqual(code, 0); 34 assert.strictEqual(signal, null); 35 }); 36 37 it('should support --require and --import along with using a loader written in CJS and CJS entry point', async () => { 38 const { code, signal, stdout, stderr } = await spawnPromisified(execPath, [ 39 '--no-warnings', 40 '--eval', 41 'setTimeout(() => console.log("D"),99)', 42 '--import', 43 fixtures.fileURL('printC.js'), 44 '--experimental-loader', 45 fixtures.fileURL('printB.js'), 46 '--require', 47 fixtures.path('printA.js'), 48 ]); 49 50 assert.strictEqual(stderr, ''); 51 // We are validating that: 52 // 1. the `--require` flag is run first from the main thread (and A is printed). 53 // 2. the `--require` flag is then run on the loader thread (and A is printed). 54 // 3. the `--loader` module is executed (and B is printed). 55 // 4. the `--import` module is evaluated once, on the main thread (and C is printed). 56 // 5. the user code is finally executed (and D is printed). 57 // The worker code should always run before the --import, but the console.log might arrive late. 58 assert.match(stdout, /^A\r?\n(A\r?\nB\r?\nC|A\r?\nC\r?\nB|C\r?\nA\r?\nB)\r?\nD\r?\n$/); 59 assert.strictEqual(code, 0); 60 assert.strictEqual(signal, null); 61 }); 62 63 it('should support --require and --import along with using a loader written in ESM and ESM entry point', async () => { 64 const { code, signal, stdout, stderr } = await spawnPromisified(execPath, [ 65 '--no-warnings', 66 '--require', 67 fixtures.path('printA.js'), 68 '--experimental-loader', 69 'data:text/javascript,console.log("B")', 70 '--import', 71 fixtures.fileURL('printC.js'), 72 '--input-type=module', 73 '--eval', 74 'setTimeout(() => console.log("D"),99)', 75 ]); 76 77 assert.strictEqual(stderr, ''); 78 // The worker code should always run before the --import, but the console.log might arrive late. 79 assert.match(stdout, /^A\r?\nA\r?\n(B\r?\nC|C\r?\nB)\r?\nD\r?\n$/); 80 assert.strictEqual(code, 0); 81 assert.strictEqual(signal, null); 82 }); 83}); 84