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ts-toolbelt

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TypeScript's largest utility library

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import { Cast } from '../Any/Cast'; import { OptionalPart } from '../Object/Optional'; import { Depth } from '../Object/_Internal'; import { List } from './List'; /** * Make `L` optional (deeply or not) * @param L to make optional * @param depth (?=`'flat'`) 'deep' to do it deeply * @returns [[List]] * @example * ```ts * ``` */ export declare type Optional<L extends List, depth extends Depth = 'flat'> = Cast<OptionalPart<L, depth>, List>;