Traceur, Babel as devDependencies only

Author: guybedford

lib/index-babel.js

@@ -1,7 +1,11 @@
 var System = require('../dist/es6-module-loader.src');
 
 System.transpiler = 'babel';
-System.paths['babel'] = require.resolve('babel-core/browser.js');
+
+try {
+  System.paths['babel'] = require.resolve('babel-core/browser.js');
+}
+catch(e) {}
 
 module.exports = {
   Loader: global.LoaderPolyfill,

lib/index-traceur.js

@@ -1,7 +1,10 @@
 var System = require('../dist/es6-module-loader.src');
 
 System.transpiler = 'traceur';
-System.paths['traceur'] = require.resolve('traceur/bin/traceur.js');
+try {
+  System.paths['traceur'] = require.resolve('traceur/bin/traceur.js');
+}
+catch(e) {}
 
 module.exports = {
   Loader: global.LoaderPolyfill,

package.json

@@ -22,6 +22,7 @@
     }
   ],
   "devDependencies": {
+    "babel-core": "^4.7.12",
     "expect.js": "^0.3.1",
     "gesalakacula": "^1.0.0",
     "grunt": "~0.4.1",
@@ -42,7 +43,8 @@
     "karma-sauce-launcher": "^0.2.10",
     "minimist": "^1.1.0",
     "mocha": "^2.0.1",
-    "regenerator": "^0.8.9"
+    "regenerator": "^0.8.9",
+    "traceur": "0.0.87"
   },
   "keywords": [
     "script",
@@ -63,8 +65,6 @@
     "test:browser:perf": "karma start karma-benchmark.conf.js --single-run"
   },
   "dependencies": {
-    "babel-core": "^4.6.6",
-    "traceur": "0.0.86",
     "when": "^3.7.2"
   }
 }

src/transpiler.js

@@ -6,12 +6,13 @@
   Loader.prototype.transpiler = 'traceur';
 
   Loader.prototype.transpile = function(load) {
-    return this['import'](this.transpiler).then(function(transpiler) {
+    var self = this;
+    return self['import'](self.transpiler).then(function(transpiler) {
       if (transpiler.__useDefault)
         transpiler = transpiler['default'];
-      return 'var __moduleAddress = "' + load.address + '";' + (transpiler.Compiler ? traceurTranspile : babelTranspile).call(this, load, transpiler);
+      return 'var __moduleAddress = "' + load.address + '";' + (transpiler.Compiler ? traceurTranspile : babelTranspile).call(self, load, transpiler);
     });
-  }
+  };
 
   var g = __global;
 
@@ -29,7 +30,7 @@
           return System.newModule({ 'default': g[load.name], __useDefault: true });
         }
       };
-  }
+  };
 
   function traceurTranspile(load, traceur) {
     var options = this.traceurOptions || {};