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z0gSh1u/expand.ts

Created May 8, 2023 09:28
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Full expand TypeScript type
Raw
expand.ts
// https://stackoverflow.com/questions/57683303/how-can-i-see-the-full-expanded-contract-of-a-typescript-type
// expands object types one level deep
type Expand<T> = T extends infer O ? { [K in keyof O]: O[K] } : never;
// expands object types recursively
type ExpandRecursively<T> = T extends object
? T extends infer O ? { [K in keyof O]: ExpandRecursively<O[K]> } : never
: T;
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