allow whitelisted globals (#185)

src/generate/index.js

@@ -5,6 +5,7 @@ import isReference from '../utils/isReference.js';
 import counter from './utils/counter.js';
 import flattenReference from '../utils/flattenReference.js';
 import namespaces from '../utils/namespaces.js';
+import globalWhitelist from '../utils/globalWhitelist.js';
 import getIntro from './utils/getIntro.js';
 import getOutro from './utils/getOutro.js';
 import visitors from './visitors/index.js';
@@ -153,7 +154,7 @@ export default function generate ( parsed, source, options, names ) {
 						} else if ( indexes[ name ] ) {
 							const context = indexes[ name ];
 							if ( !~usedContexts.indexOf( context ) ) usedContexts.push( context );
-						} else {
+						} else if ( !globalWhitelist[ name ] ) {
 							dependencies.push( name );
 							generator.code.prependRight( node.start, `root.` );
 							if ( !~usedContexts.indexOf( 'root' ) ) usedContexts.push( 'root' );

src/utils/globalWhitelist.js

@@ -0,0 +1,27 @@
+export default {
+	Array: true,
+	Boolean: true,
+	console: true,
+	Date: true,
+	decodeURI: true,
+	decodeURIComponent: true,
+	encodeURI: true,
+	encodeURIComponent: true,
+	Infinity: true,
+	Intl: true,
+	isFinite: true,
+	isNaN: true,
+	JSON: true,
+	Map: true,
+	Math: true,
+	NaN: true,
+	Number: true,
+	null: true,
+	Object: true,
+	parseFloat: true,
+	parseInt: true,
+	RegExp: true,
+	Set: true,
+	String: true,
+	undefined: true,
+};

test/generator/globals-not-dereferenced/_config.js

@@ -0,0 +1,12 @@
+export default {
+	data: {
+		x: 10
+	},
+
+	html: '5',
+
+	test ( assert, component, target ) {
+		component.set({ x: 3 });
+		assert.htmlEqual( target.innerHTML, '3' );
+	}
+};

test/generator/globals-not-dereferenced/main.html

@@ -0,0 +1 @@
+{{Math.min(x, 5)}}