'use strict'; const common = require('../common'); const child_process = require('child_process'); const assert = require('assert'); // Regression test for https://github.com/nodejs/node/issues/27575: // module.id === '' in the REPL. for (const extraFlags of [[], ['-e', '42']]) { const flags = ['--interactive', ...extraFlags]; const proc = child_process.spawn(process.execPath, flags, { stdio: ['pipe', 'pipe', 'inherit'] }); proc.stdin.write('module.id\n.exit\n'); let stdout = ''; proc.stdout.setEncoding('utf8'); proc.stdout.on('data', (chunk) => stdout += chunk); proc.stdout.on('end', common.mustCall(() => { assert(stdout.includes(''), `stdout: ${stdout}`); })); }