react-native-reanimated/src/reanimated2/publicGlobals.ts

'use strict';
/* eslint-disable no-var */
export {};

declare global {
  /**
   * This global variable is a diagnostic/development tool.
   *
   * It is `true` on the UI thread and `false` on the JS thread.
   *
   * It used to be necessary in the past for some of the
   * functionalities of react-native-reanimated to work
   * properly but it's no longer the case. Your code
   * shouldn't depend on it, we keep it here
   * mainly for backward compatibility for our users.
   */
  var _WORKLET: boolean | undefined;

  /**
   * This ArrayBuffer contains the memory address of `jsi::Runtime`
   * which is the Reanimated UI runtime.
   */
  var _WORKLET_RUNTIME: ArrayBuffer;
}