Grunt任务中的节点JS - child_process spawn('npm install')导致ENOENT错误

Question

我正在创作一个Grunt任务有些困难.我正在尝试执行npm install,然后执行bower install,然后执行grunt hub目标(触发多个子项目的构建命令).

我遇到的问题在于child_process.如果我在我的grunt任务中运行以下命令,并且当前已注释掉的npm install spawn命令,则会出现生成ENOENT错误:

    var path = require('path'),
        projectPath = path.resolve(process.cwd(), this.data.activity );

        grunt.log.debug('project path computed as: ', projectPath);
        process.chdir( projectPath );

        console.log('current dir is: ', process.cwd());
        console.log('EVN is: ', process.env);

        var spawnProcess = spawn('ls');
        // var spawnProcess = spawn('npm install');

        spawnProcess.stdout.on('data', function (data) {
            console.log('' + data);
        });

        spawnProcess.stderr.on('data', function(data) {

            console.log('something went wrong installing deps for ' + path + '.  Error: ', data);
        });

        spawnProcess.on('close', function (exitCode) {

            console.log( 'ls has finished with Exit Code: ' + exitCode);
        });

当前代码(使用ls而不是npm install)导致:

   running "install:projects" (install) task[D] Task source: /Users/zedd45/proj/Gruntfile.js
Verifying property install.projects exists in config...OK
File: [no files]
[D] project path computed as:  /Users/zedd45/proj/activity/web/client
current dir is:  /Users/zedd45/proj/activity/web/client
EVN (abbreviated) is:  { 
   TERM_PROGRAM: 'iTerm.app',
   SHELL: '/bin/bash',
   PWD: '/Users/zedd45/proj',
 ...
  OLDPWD: '/Users/zedd45/proj/activity/web/client',
  _: '/usr/local/bin/grunt' }

GruntFile.js
bower.json
package.json
this_is_the_directory_you_are_looking_for.txt
ls has finished with Exit Code: 0

但如果我将'ls'改为'npm install',我会得到``致命错误:产生ENOENT

紧接着ENV打印.

我已经尝试了chmod 777用于该目录,这似乎没有帮助.

我也尝试过:

// var spawnProcess = spawn('npm install', {'cwd': projectPath});

和

// var spawnProcess = spawn('npm install', [], {'cwd': projectPath});

前者导致

警告:对象#没有方法'slice'使用--force继续.

后者仍会导致ENOENT错误.

任何帮助确切地说这个ENOENT错误可能会有很大帮助; 谷歌搜索它或子进程API文档我没有取得多大成功

Answer 1

再次仔细检查child_process.spawn上的文档.第一个参数应该只是要运行的命令,第二个参数应该是参数:

var npm = spawn('npm', ['install'], { cwd: projectPath });