Method map

packages/taro-extend/types/index.d.ts:168–168

* Iterate through elements of collection and return all results of running the iterator function, with null and undefined values filtered out. * @param collection * @param fn * @return

(collection: any[], fn: (item: any, index: number) => any)

     * @return
     */
    map(collection: any[], fn: (item: any, index: number) => any): any[];

    /**
     * Alias for the native JSON.parse method.