// Immutable aliases of overloaded DECLARATIONS project back onto the one
// implementation and resolve each call per site. The structural overload
// below remains SC2007: it has no declaration implementation to project.

function pick(x: "a"): string;
function pick(x: "b"): number;
function pick(x: string): string | number {
  return x === "a" ? "A" : 1;
}
const stored = pick;
console.log(stored("a"));

// An overloaded TYPE LITERAL slot fences the same way. The value arrives
// through a cast, not an ambient declare (a declare-rooted chain would
// compile to Node's ReferenceError at the root instead).
const on = ((() => {}) as unknown) as { (event: "exit", code: number): void; (event: "error", err: string): void };
const listener = on;
console.log(listener("exit", 0));