运行`npm install`时如何从node exec获取输出？

Question

我运行了以下内容：

const exec = require('child_process').exec; 
let installProcess = exec('npm install'); 
    installProcess.stdout.pipe(process.stdout); 
    installProcess.stderr.pipe(process.stderr); 

但我得到了我的终端没有输出，我还能尝试一下呢？

Answer 1

以下结束了对我的工作：

const execSync = require('child_process'); 
execSync('npm install', {stdio:[0,1,2]}); 

Answer 2

这工作完全

const exec = require('child_process').exec; 
const installProcess = exec('npm install --verbose'); 

installProcess.stdout.on('data', process.stdout.write); 
installProcess.stderr.on('data', process.stdout.write); 
installProcess.on('close', (code) => process.stdout.write(`exited with ${code}`)); 

，结果

❯ node index.js 
stderr: npm 
stderr: info it worked if it ends with ok 
npm verb cli [ '/usr/local/Cellar/node/6.3.0/bin/node', 
npm verb cli '/usr/local/bin/npm', 
npm verb cli 'install', 
npm verb cli '--verbose' ] 
npm info using npm@3.10.3 
npm info using node@v6.3.0 

stderr: npm verb 
stderr: correctMkdir /Users/bwin/.npm/_locks correctMkdir not in flight; initializing 

stderr: npm 
stderr: info lifecycle tmp@1.0.0~preinstall: tmp@1.0.0 

stderr: npm verb 
stderr: exit [ 0, true ] 

stderr: npm info 
stderr: ok 

exited with 0