Type Alias Box<T>

Box: T extends string
    ? String
    : T extends number
        ? Number
        : T extends boolean ? Boolean : T extends symbol ? Symbol : T

Convert primitive literal types to their boxed object counterparts.

Type Parameters

T
Primitive literal type(s) to convert

Remarks

Useful when interacting with APIs or type constraints that expect boxed primitives instead of their primitive forms.

Example

type Boxed = Box< 'hello' | 42 | true >;
// String | Number | Boolean