OptionGuards<T>

One guard per option of an all-optional object type, as optionsGuard takes them: each describes a PRESENT option, so it does not accept undefined. A required property of T takes never, so a type that is not all-optional does not compile.

Import:

import type { OptionGuards } from '@mnaoumov/typescript-lib/api-contract';

Signature:

export type OptionGuards<T extends object>

Signature:

type OptionGuards<T> = {
  readonly [TKey in keyof T]-?: Partial<Pick<T, TKey>> extends Pick<T, TKey> ? ExpectedTypeGuard<Exclude<T[TKey], undefined>> : never;
}

Type: { readonly [TKey in keyof T]-?: Partial<Pick<T, TKey>> extends Pick<T, TKey> ? ExpectedTypeGuard<Exclude<T[TKey], undefined>> : never; }

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Links to this page:

• optionsGuard