function filterFilter(){return function(array,expression,comparator){if(!isArrayLike(array)){if(array==null){return array}else{throw minErr('filter')('notarray','Expected array but received: {0}',array);}}var expressionType=getTypeForFilter(expression);var predicateFn;var matchAgainstAnyProp;switch(expressionType){case'function':predicateFn=expression;break;case'boolean':case'null':case'number':case'string':matchAgainstAnyProp=true;case'object':predicateFn=createPredicateFn(expression,comparator,matchAgainstAnyProp);break;default:return array}return Array.prototype.filter.call(array,predicateFn)}}

格式化 压缩