rambda/_ts-toolbelt/src/Object/FilterKeys.ts

Lightweight faster alternative to Ramda

import {Match} from '../Any/_Internal'
import {Is} from '../Any/Is'
import {Keys} from './Keys'

/** Filter out the keys of **`O`** which fields match **`M`**
 * @param O to remove from
 * @param M to select fields
 * @param match to change precision (?=`'default'`)
 * @returns **`keyof`**
 * @example
 * ```ts
 * ```
 */
export type FilterKeys<O extends object, M extends any, match extends Match = 'default'> = {
    [K in Keys<O>]: {
        1: never
        0: K
    }[Is<O[K], M, match>]
}[Keys<O>]