Function _register

lib/internal/process/finalization.js:84–94

(event, obj, fn)

  }

  function _register(event, obj, fn) {
    install(event);

    const ref = new SafeWeakRef(obj);
    ref.fn = fn;

    registry ||= new SafeFinalizationRegistry(clear);
    registry.register(obj, ref);

    ArrayPrototypePush(refs[event], ref);
  }

  /**
   * Execute the given function when the process exits,