Allow gulp command to check which jigsaw binary to use

site/gulpfile.js

@@ -1,6 +1,7 @@
 var gulp = require('gulp');
 var elixir = require('laravel-elixir');
 var argv = require('yargs').argv;
+var bin = require('./tasks/bin');
 
 elixir.config.assetsPath = 'source/_assets';
 elixir.config.publicPath = 'source';
@@ -10,11 +11,12 @@ elixir(function(mix) {
     var port = argv.p || argv.port || 3000;
 
     mix.sass('main.scss')
-        .exec('jigsaw build ' + env, ['./source/*', './source/**/*', '!./source/_assets/**/*'])
+        .exec(bin.path() + ' build ' + env, ['./source/*', './source/**/*', '!./source/_assets/**/*'])
         .browserSync({
             port: port,
             server: { baseDir: 'build_' + env },
             proxy: null,
             files: [ 'build_' + env + '/**/*' ]
         });
 });
+

site/package.json

@@ -2,6 +2,7 @@
   "private": true,
   "devDependencies": {
     "gulp": "^3.8.8",
+    "hasbin": "^1.2.3",
     "laravel-elixir": "^4.2.0",
     "yargs": "^4.6.0"
   }

site/tasks/bin.js

@@ -0,0 +1,18 @@
+var hasbin = require('hasbin');
+var fs = require('fs');
+
+module.exports = { 
+    path: function() {
+        if (fs.existsSync('./vendor/bin/jigsaw')) {
+            return './vendor/bin/jigsaw'
+        }
+
+        if (hasbin.sync('jigsaw')) {
+            return 'jigsaw'; 
+        }
+
+        console.log('Could not find Jigsaw; please install it via Composer, either locally or globally.');
+
+        process.exit();
+    }
+};