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    <p>If you follow the stack, <code>this.installDependencies</code> eventually works its way down to <a href="https://github.com/yeoman/generator/blob/45258c0a48edfb917ecf915e842b091a26d17f3e/lib/actions/install.js#L36" rel="noreferrer">https://github.com/yeoman/generator/blob/45258c0a48edfb917ecf915e842b091a26d17f3e/lib/actions/install.js#L36</a>:</p> <pre><code>this.spawnCommand(installer, args, cb) .on('error', cb) .on('exit', this.emit.bind(this, installer + 'Install:end', paths)) .on('exit', function (err) { if (err === 127) { this.log.error('Could not find ' + installer + '. Please install with ' + '`npm install -g ' + installer + '`.'); } cb(err); }.bind(this)); </code></pre> <p>Chasing this down further, <code>this.spawnCommand</code> comes from <a href="https://github.com/yeoman/generator/blob/master/lib/actions/spawn_command.js" rel="noreferrer">https://github.com/yeoman/generator/blob/master/lib/actions/spawn_command.js</a>:</p> <pre><code>var spawn = require('child_process').spawn; var win32 = process.platform === 'win32'; /** * Normalize a command across OS and spawn it. * * @param {String} command * @param {Array} args */ module.exports = function spawnCommand(command, args) { var winCommand = win32 ? 'cmd' : command; var winArgs = win32 ? ['/c'].concat(command, args) : args; return spawn(winCommand, winArgs, { stdio: 'inherit' }); }; </code></pre> <p>In other words, in your Generator's code, you can call <code>this.spawnCommand</code> anytime, and pass it the arguments you wish the terminal to run. As in, <code>this.spawnCommand('grunt', ['build'])</code>.</p> <p>So then the next question is where do you put that? Thinking linearly, you can only trust that <code>grunt build</code> will work after all of your dependencies have been installed. </p> <p>From <a href="https://github.com/yeoman/generator/blob/45258c0a48edfb917ecf915e842b091a26d17f3e/lib/actions/install.js#L67-69" rel="noreferrer">https://github.com/yeoman/generator/blob/45258c0a48edfb917ecf915e842b091a26d17f3e/lib/actions/install.js#L67-69</a>, <code>this.installDependencies</code> accepts a callback, so your code might look like this:</p> <pre><code>this.on('end', function () { this.installDependencies({ skipInstall: this.options['skip-install'], callback: function () { this.spawnCommand('grunt', ['build']); }.bind(this) // bind the callback to the parent scope }); }); </code></pre> <p>Give it a shot! If all goes well, you should add some error handling on top of that new <code>this.spawnCommand</code> call to be safe.</p>
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    1. POHow to run a Grunt task after my Yeoman generator finishes installing?
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    1. COIt's worth mentioning that inside the callback function `this` loses scope. I originally created a variable to cache `this` in the correct scope and used that to call `spawnCommand`. However, I decided to use `bind()` instead since it would be cleaner. I've edited the answer to reflect this.
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