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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | 1x 2x 1x 1x 2x 4x 4x | /** * Maps keys of `object` and keeps the same values. * @param object the object to map * @param fn the mapping function * @signature * R.mapKeys(object, fn) * @example * R.mapKeys({a: 1, b: 2}, (key, value) => key + value) // => { a1: 1, b2: 2 } * @data_first * @category Object */ export function mapKeys<T, S>( object: T, fn: (key: keyof T, value: T[keyof T]) => any ): { [x: string]: any }; /** * Maps keys of `object` and keeps the same values. * @param fn the mapping function * @signature * R.mapKeys(fn)(object) * @example * R.pipe({a: 1, b: 2}, R.mapKeys((key, value) => key + value)) // => { a1: 1, b2: 2 } * @data_last * @category Object */ export function mapKeys<T, S>( fn: (key: keyof T, value: T[keyof T]) => any ): (object: T) => { [x: string]: any }; export function mapKeys(arg1: any, arg2?: any): any { if (arguments.length === 1) { return (data: any) => _mapKeys(data, arg1); } return _mapKeys(arg1, arg2); } function _mapKeys(obj: any, fn: (key: string, value: any) => any) { return Object.keys(obj).reduce( (acc, key) => { acc[fn(key, obj[key])] = obj[key]; return acc; }, {} as any ); } |