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gustavohenke/deep-union.ts

Created July 13, 2022 06:20
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deep-union.ts
/**
* Recursively unions the types of the properties of T.
* TODO: Deal with arrays
*
* @example
* type SomeObject = { a: { b: { c: boolean } }, d: string };
* const x: DeepUnion<SomeObject>; // boolean | string
*/
type DeepUnion<T extends object> = {
[K in keyof T]: T[K] extends object ? DeepValues<T[K]> : T[K];
}[keyof T];
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