1'use strict'; 2 3const { spawnPromisified } = require('../common'); 4const fixtures = require('../common/fixtures.js'); 5const assert = require('node:assert'); 6const { execPath } = require('node:process'); 7const { describe, it } = require('node:test'); 8 9 10describe('ESM: importing CJS', { concurrency: true }, () => { 11 it('should support valid CJS exports', async () => { 12 const validEntry = fixtures.path('/es-modules/cjs-exports.mjs'); 13 const { code, signal, stdout } = await spawnPromisified(execPath, [validEntry]); 14 15 assert.strictEqual(code, 0); 16 assert.strictEqual(signal, null); 17 assert.strictEqual(stdout, 'ok\n'); 18 }); 19 20 it('should error on invalid CJS exports', async () => { 21 const invalidEntry = fixtures.path('/es-modules/cjs-exports-invalid.mjs'); 22 const { code, signal, stderr } = await spawnPromisified(execPath, [invalidEntry]); 23 24 assert.strictEqual(code, 1); 25 assert.strictEqual(signal, null); 26 assert.ok(stderr.includes('Warning: To load an ES module')); 27 assert.ok(stderr.includes('Unexpected token \'export\'')); 28 }); 29}); 30