0.1.4 #5
@@ -6,28 +6,26 @@ type Prev = readonly [never, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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export type Paths<T, D extends number = 5, Seen = never> = readonly [] | (
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D extends never ? readonly [] :
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T extends Seen ? readonly [] :
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T extends readonly any[] ? ArrayPaths<T, D, Seen | T> :
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T extends object ? ObjectPaths<T, D, Seen | T> :
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T extends readonly any[] ? {
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[K in keyof T as K extends number ? K : never]:
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| readonly [K]
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| readonly [K, ...Paths<T[K], Prev[D], Seen | T>]
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} extends infer O
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? O[keyof O]
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: never
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:
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T extends object ? {
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[K in keyof T as K extends string | number | symbol ? K : never]-?:
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NonNullable<T[K]> extends infer V
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? readonly [K] | readonly [K, ...Paths<V, Prev[D], Seen>]
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: never
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} extends infer O
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? O[keyof O]
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: never
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:
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never
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)
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export type ArrayPaths<T extends readonly any[], D extends number, Seen> = {
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[K in keyof T as K extends number ? K : never]:
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| readonly [K]
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| readonly [K, ...Paths<T[K], Prev[D], Seen>]
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} extends infer O
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? O[keyof O]
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: never
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export type ObjectPaths<T extends object, D extends number, Seen> = {
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[K in keyof T as K extends string | number | symbol ? K : never]-?:
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NonNullable<T[K]> extends infer V
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? readonly [K] | readonly [K, ...Paths<V, Prev[D], Seen>]
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: never
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} extends infer O
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? O[keyof O]
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: never
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export type ValueFromPath<T, P extends readonly any[]> = P extends [infer Head, ...infer Tail]
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? Head extends keyof T
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? ValueFromPath<T[Head], Tail>
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