use of rollup-plugin-inject to avoid expecting three to provide a def…

…ault export when importing non-module three examples.

see issue videojs#50

package.json

@@ -123,6 +123,7 @@
     "rollup": "^0.50",
     "rollup-plugin-babel": "^2.7.1",
     "rollup-plugin-commonjs": "^8.0.2",
+    "rollup-plugin-inject": "^2.0.0",
     "rollup-plugin-json": "^2.1.1",
     "rollup-plugin-multi-entry": "^2.0.1",
     "rollup-plugin-node-resolve": "^3.0.0",

scripts/modules.rollup.config.js

@@ -10,6 +10,7 @@ import json from 'rollup-plugin-json';
 import replace from './rollup-replace';
 import commonjs from 'rollup-plugin-commonjs';
 import resolve from 'rollup-plugin-node-resolve';
+import inject from 'rollup-plugin-inject';
 
 export default {
   name: 'videojsVr',
@@ -58,6 +59,10 @@ export default {
         'external-helpers',
         'transform-object-assign'
       ]
+    }),
+    inject({
+      include: ['node_modules/three/examples/js/**'],
+      THREE: ['three', '*']
     })
   ]
 };

scripts/rollup-replace.js

@@ -5,13 +5,13 @@ export default function(options) {
   return replace(Object.assign({
     'include': ['node_modules/three/examples/js/**'],
     'delimiters': ['', ''],
-    'THREE.VRControls =': "var THREE = require('three');var VRControls;\nmodule.exports = VRControls =",
+    'THREE.VRControls =': 'var VRControls;\nmodule.exports = VRControls =',
     'THREE.VRControls': 'VRControls',
 
-    'THREE.VREffect =': "var THREE = require('three');var VREffect;\nmodule.exports = VREffect =",
+    'THREE.VREffect =': 'var VREffect;\nmodule.exports = VREffect =',
     'THREE.VREffect': 'VREffect',
 
-    'THREE.OrbitControls =': "var THREE = require('three');var OrbitControls;\nmodule.exports = OrbitControls =",
+    'THREE.OrbitControls =': 'var OrbitControls;\nmodule.exports = OrbitControls =',
     'THREE.OrbitControls': 'OrbitControls'
   }, options || {}));
 }