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TypeScript type that removes nullable properties from a collection (object or array)
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| /** | |
| * Removes nullable properties (with `null` or `undefined` values) from an object or array. | |
| * @template T The object or array to remove nullable properties from. | |
| * @see https://gist.github.com/albertms10/fb5a6d87a97db584086241d5bad74a41 | |
| * @example | |
| * type A = { a?: string; b: null; c?: number | null }; | |
| * type B = NonNullableCollection<A>; | |
| * // { a: string; c: number; } | |
| * @example | |
| * type A = [string, undefined, number, null]; | |
| * type B = NonNullableCollection<A>; | |
| * // (string | number)[] | |
| */ | |
| export type NonNullableCollection<T> = T extends (infer U)[] | |
| ? Exclude<U, null | undefined>[] | |
| : { | |
| [K in keyof T as NonNullable<T[K]> extends never ? never : K]-?: Exclude< | |
| T[K], | |
| null | undefined | |
| >; | |
| }; |
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