adds preferLocal option for including 'node_modules/.bin' to path (#102)

closes #101

Closes #102

package.json

@@ -30,7 +30,10 @@
     "cli"
   ],
   "dependencies": {
-    "chalk": "^1.0.0"
+    "chalk": "^1.0.0",
+    "npm-run-path": "^1.0.0",
+    "object-assign": "^4.0.0",
+    "path-key": "^1.0.0"
   },
   "devDependencies": {
     "grunt": "^0.4.5",

readme.md

@@ -227,6 +227,13 @@ Lets you override the default callback with your own.
 
 **Make sure to call the `cb` method when you're done.**
 
+### preferLocal
+
+Type: `boolean`<br>
+Default: `false`
+
+When set to `true` will execute local binaries by name like npm run script
+
 ### execOptions
 
 Type: `object`

tasks/shell.js

@@ -1,6 +1,9 @@
 'use strict';
 var exec = require('child_process').exec;
 var chalk = require('chalk');
+var npmRunPath = require('npm-run-path');
+var objectAssign = require('object-assign');
+var pathKey = require('path-key');
 
 module.exports = function (grunt) {
 	grunt.registerMultiTask('shell', 'Run shell commands', function () {
@@ -10,7 +13,11 @@ module.exports = function (grunt) {
 			stderr: true,
 			stdin: true,
 			failOnError: true,
-			stdinRawMode: false
+			stdinRawMode: false,
+			preferLocal: false,
+			execOptions: {
+				env: null
+			}
 		});
 
 		var cmd = typeof this.data === 'string' ? this.data : this.data.command;
@@ -21,6 +28,11 @@ module.exports = function (grunt) {
 
 		cmd = grunt.template.process(typeof cmd === 'function' ? cmd.apply(grunt, arguments) : cmd);
 
+		if (options.preferLocal === true) {
+			options.execOptions.env = options.execOptions.env || objectAssign({}, process.env);
+			options.execOptions.env[pathKey()] = npmRunPath(options.execOptions.env);
+		}
+
 		var cp = exec(cmd, options.execOptions, function (err, stdout, stderr) {
 			if (typeof options.callback === 'function') {
 				options.callback.call(this, err, stdout, stderr, cb);