Type Alias InferShape<A>

InferShape: A extends readonly (infer T)[]
    ? A extends readonly [unknown, ...unknown[]]
        ? readonly [A["length"], ...InferShape<T>]
        : InferShape<T> extends readonly []
            ? readonly [number]
            : readonly [number, ...InferShape<T>]
    : readonly []

Extract shape from nested array type

Inverse of NestedArray - given a nested array, extract its shape.

Type Parameters

A
Nested array type

Example

type S1 = InferShape<number>;                    // readonly []
type S2 = InferShape<[number, number, number]>;  // readonly [3]
type S3 = InferShape<[[number, number]]>;        // readonly [1, 2]

Type Alias InferShape<A>

Type Parameters

Example

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