addons/shared/EnsureAssignedTogether.tsblame
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b69ab311/**
b69ab312 * Copyright (c) Meta Platforms, Inc. and affiliates.
b69ab313 *
b69ab314 * This source code is licensed under the MIT license found in the
b69ab315 * LICENSE file in the root directory of this source tree.
b69ab316 */
b69ab317
b69ab318/**
b69ab319 * Given an object type with multiple keys, produce a type that has either all of the keys non-null, or all the keys undefined
b69ab3110 * ```
b69ab3111 * EnsureAssignedTogether<{a: number, b: string}> === {a: number, b: string} | {a?: undefined, b?: undefined}
b69ab3112 * ```
b69ab3113 * This is useful for props that need to be provided together.
b69ab3114 **/
b69ab3115export type EnsureAssignedTogether<T extends object> = T | {[key in keyof T]?: undefined};