javascript - 错误 : spawn npm ENOENT

Question

我有一个 JS 应用程序。它在 linux 上运行良好，但在 windows 10 中出现错误。

events.js:161
  throw er; // Unhandled 'error' event
  ^

Error: spawn npm ENOENT
    at exports._errnoException (util.js:1028:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
    at onErrorNT (internal/child_process.js:359:16)
    at _combinedTickCallback (internal/process/next_tick.js:74:11)
    at process._tickCallback (internal/process/next_tick.js:98:9)
    at Module.runMain (module.js:607:11)
    at run (bootstrap_node.js:422:7)
    at startup (bootstrap_node.js:143:9)
    at bootstrap_node.js:537:3

不正确的代码是这个

const spawn = require('child_process').spawn;

const watching = [
  // {service: "babel-watch"},
  {service: "webpack-watch"},
  // {service: "sass-watch"},
  {service: "server-watch"}
];

watching.forEach(({service}) => {
  const child = spawn('npm', ['run', service]);
  child.stdout.on('data', d => console.log(d.toString()));
  child.stderr.on('data', d => console.log(d.toString()));
});

我在 github 中找到了这个错误的原因我想问题是产生 nodejs spawn Doc在 Windows 中无法正常工作。但我不知道如何修改这段代码以使其工作。有人可以帮我吗？

Answer 1

刚刚改了这一行

const child = spawn('npm', ['run', service]);

到这一行

  const child = spawn(/^win/.test(process.platform) ? 'npm.cmd' : 'npm', ['run',  service]);

如果是 ti 的 windows 它运行 npm.cmd 如果它是 linux 则检查操作系统只是 npm