fixed typo

lib/single-file/css-declarations-parser.js

@@ -475,7 +475,7 @@ this.parseCss = this.parseCss || (() => {
 			}
 		}
 		const value = convertAStringToANumber(repr);
-		return { type: value, repr };
+		return { type, value, repr };
 	}
 
 	function convertAStringToANumber(string) {