/**
 * Helper type to determine if a type is a union.
 *
 * @public
 */
export type IsUnion<T> = [T] extends [UnionToIntersection<T>] ? false : true;
/**
 * Helper type to convert a union to an intersection.
 *
 * @public
 */
export type UnionToIntersection<U> = (U extends any ? (k: U) => void : never) extends (k: infer I) => void ? I : never;
/**
 * Helper type to determine if a type is a string union.
 *
 * @public
 */
export type IsStringUnion<T> = IsUnion<T> extends true ? (T extends string ? true : false) : false;
/**
 * Helper type to extract a string union from a type.
 *
 * @public
 */
export type StringUnion<T> = [T] extends [string] ? string extends T ? never : T : never;
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