test-module-import.js

'use strict';
require('../common');
const assert = require('assert');
const { spawn } = require('child_process');

const input = `
  import('path').then(
    (path) => {process.stdout.write(path.delimiter)},
    console.log
  );
`.trim();

const node = process.argv[0];
const args = ['--experimental-modules'];

const subprocess = spawn(node, args);
let stdout = '';
let stderr = '';
subprocess.stdin.end(input);
subprocess.stdout.on('data', (data) => stdout += data);
subprocess.stderr.on('data', (data) => stderr += data);

subprocess.on('close', () => {
  assert.strictEqual(stderr.replace(/.*ExperimentalWarning.*/, '').trim(), '');
  assert.strictEqual(stdout.trim(), ':');
});