Type Alias WithStatusBooleans<T>

WithStatusBooleans: T & {
readonly [K in T["status"] as `is${Capitalize<SnakeToCamel<K>>}`]: boolean
}

Intersects a type that has a status string field with boolean helpers of the form is{Status} for every status value in the union.

Snake_case status values are converted to camelCase: 'not_connected' → isNotConnected

Type Parameters

T extends { status: string }

Example

type MyResult = WithStatusBooleans<
  | { status: 'success'; data: string }
  | { status: 'not_found' }
>
// Result has: isSuccess, isNotFound