@wordpress/hooks/build-module/createDoingHook.js

WordPress hooks library.

/**
 * @callback DoingHook
 * Returns whether a hook is currently being executed.
 *
 * @param {string} [hookName] The name of the hook to check for.  If
 *                            omitted, will check for any hook being executed.
 *
 * @return {boolean} Whether the hook is being executed.
 */

/**
 * Returns a function which, when invoked, will return whether a hook is
 * currently being executed.
 *
 * @param {import('.').Hooks}    hooks    Hooks instance.
 * @param {import('.').StoreKey} storeKey
 *
 * @return {DoingHook} Function that returns whether a hook is currently
 *                     being executed.
 */
function createDoingHook(hooks, storeKey) {
  return function doingHook(hookName) {
    const hooksStore = hooks[storeKey];

    // If the hookName was not passed, check for any current hook.
    if ('undefined' === typeof hookName) {
      return hooksStore.__current.size > 0;
    }

    // Find if the `hookName` hook is in `__current`.
    return Array.from(hooksStore.__current).some(hook => hook.name === hookName);
  };
}
export default createDoingHook;
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