53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
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var _ = require('lodash'),
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fs = require('fs'),
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path = require('path'),
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Promise = require('bluebird'),
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spawn = require('child_process').spawn,
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win32 = process.platform === 'win32';
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function AppDependencies(appPath) {
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this.appPath = appPath;
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}
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AppDependencies.prototype.install = function installAppDependencies() {
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var spawnOpts,
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self = this;
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return new Promise(function (resolve, reject) {
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fs.exists(path.join(self.appPath, 'package.json'), function (exists) {
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if (!exists) {
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// Nothing to do, resolve right away?
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resolve();
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} else {
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// Run npm install in the app directory
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spawnOpts = {
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cwd: self.appPath
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};
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self.spawnCommand('npm', ['install', '--production'], spawnOpts)
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.on('error', reject)
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.on('exit', function (err) {
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if (err) {
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reject(err);
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}
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resolve();
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});
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}
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});
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});
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};
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// Normalize a command across OS and spawn it; taken from yeoman/generator
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AppDependencies.prototype.spawnCommand = function (command, args, opt) {
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var winCommand = win32 ? 'cmd' : command,
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winArgs = win32 ? ['/c'].concat(command, args) : args;
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opt = opt || {};
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return spawn(winCommand, winArgs, _.defaults({stdio: 'inherit'}, opt));
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};
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module.exports = AppDependencies;
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