@ue-too/being / CreateStateType

Type Alias: CreateStateType<ArrayLiteral>

CreateStateType<ArrayLiteral> = ArrayLiteral[number]

Defined in: interface.ts:57

Utility type to derive a string literal union from a readonly array of string literals.

Type Parameters

ArrayLiteral

ArrayLiteral extends readonly string[]

Remarks

This helper type extracts the element types from a readonly array to create a union type. Useful for defining state machine states from an array.

Example

const TEST_STATES = ["one", "two", "three"] as const;
type TestStates = CreateStateType<typeof TEST_STATES>; // "one" | "two" | "three"