@monstermann/fn/dist/set/addOrThrow.d.ts

A utility library for TypeScript.

//#region src/set/addOrThrow.d.ts
/**
 * `addOrThrow(target, value)`
 *
 * Adds a `value` to the `target` set and returns a new set. If the value already exists in the set, throws an error.
 *
 * ```ts
 * addOrThrow(new Set([1, 2]), 3); // Set([1, 2, 3])
 * addOrThrow(new Set([1, 2]), 2); // throws FnError
 * ```
 *
 * ```ts
 * pipe(new Set([1, 2]), addOrThrow(3)); // Set([1, 2, 3])
 * pipe(new Set([1, 2]), addOrThrow(2)); // throws FnError
 * ```
 */
declare const addOrThrow: {
  <T>(value: NoInfer<T>): (target: ReadonlySet<T>) => Set<T>;
  <T>(target: ReadonlySet<T>, value: NoInfer<T>): Set<T>;
};
//#endregion
export { addOrThrow };