import { afterAll } from "bun:test";

/**
 * Restore globals a suite replaces, once the suite is done.
 *
 * These suites install a happy-dom window over the real globals and delete
 * them before each test so every test starts clean. bun test loads and runs
 * one file at a time rather than importing them all up front, so anything left
 * deleted is still missing when the next suite runs -- which is how `bun test`
 * with no argument came to fail unrelated files with "fetch is not a
 * function". Names absent at capture time are deleted again rather than being
 * restored as undefined, so a global that never existed does not gain a key.
 */
export function restoreGlobalsAfterAll(names: readonly string[]): void {
  const captured = new Map<string, unknown>(
    names.map((name) => [name, (globalThis as Record<string, unknown>)[name]]),
  );

  afterAll(() => {
    for (const [name, value] of captured) {
      if (value === undefined) {
        delete (globalThis as Record<string, unknown>)[name];
      } else {
        (globalThis as Record<string, unknown>)[name] = value;
      }
    }
  });
}