feat(core): introduce a CSS lexer/parser

modules/angular2/src/facade/lang.ts

@@ -473,3 +473,11 @@ export function isPrimitive(obj: any): boolean {
 export function hasConstructor(value: Object, type: Type): boolean {
   return value.constructor === type;
 }
+
+export function bitWiseOr(values: number[]): number {
+  return values.reduce((a, b) => { return a | b; });
+}
+
+export function bitWiseAnd(values: number[]): number {
+  return values.reduce((a, b) => { return a & b; });
+}