Marc Mintel
5397309103
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6 lines
1.5 KiB
Plaintext
6 lines
1.5 KiB
Plaintext
import { AnyRecord } from "../any-record";
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import { Builtin } from "../built-in";
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export type DeepPick<Type, Filter> = Type extends Builtin ? Type : Type extends Map<infer Keys, infer Values> ? Filter extends Map<Keys, infer FilterValues> ? Map<Keys, DeepPick<Values, FilterValues>> : Type : Type extends ReadonlyMap<infer Keys, infer Values> ? Filter extends ReadonlyMap<Keys, infer FilterValues> ? ReadonlyMap<Keys, DeepPick<Values, FilterValues>> : Type : Type extends WeakMap<infer Keys, infer Values> ? Filter extends WeakMap<Keys, infer FilterValues> ? WeakMap<Keys, DeepPick<Values, FilterValues>> : Type : Type extends Set<infer Values> ? Filter extends Set<infer FilterValues> ? Set<DeepPick<Values, FilterValues>> : Type : Type extends ReadonlySet<infer Values> ? Filter extends ReadonlySet<infer FilterValues> ? ReadonlySet<DeepPick<Values, FilterValues>> : Type : Type extends WeakSet<infer Values> ? Filter extends WeakSet<infer FilterValues> ? WeakSet<DeepPick<Values, FilterValues>> : Type : Type extends Array<infer Values> ? Filter extends Array<infer FilterValues> ? Array<DeepPick<Values, FilterValues>> : Type : Type extends Promise<infer Value> ? Filter extends Promise<infer FilterValue> ? Promise<DeepPick<Value, FilterValue>> : Type : Filter extends AnyRecord ? {
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[Key in keyof Type as Key extends keyof Filter ? Key : never]: Filter[Key & keyof Filter] extends true ? Type[Key] : Key extends keyof Filter ? DeepPick<Type[Key], Filter[Key]> : never;
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} : never;
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