如何通过代码知道"npm install“是否已完成(成功或错误)？

const { exec } = require('child_process');

exec('npm install', (error, stdout, stderr) => {
  if (error) {
    console.error(`npm install error: ${error}`);
  } else {
    console.log('npm install completed successfully');
  }
});

const util = require('util');
const exec = util.promisify(require('child_process').exec);

async function runNpmInstall() {
  try {
    await exec('npm install');
    console.log('npm install completed successfully');
  } catch (error) {
    console.error(`npm install error: ${error}`);
  }
}

runNpmInstall();

const { spawn } = require('child_process');

const npmInstall = spawn('npm', ['install']);

npmInstall.on('exit', (code) => {
  if (code === 0) {
    console.log('npm install completed successfully');
  } else {
    console.error(`npm install error: Exit code ${code}`);
  }
});