@wordpress/core-data/build-module/utils/if-matching-action.js

Access to and manipulation of core WordPress entities.

/** @typedef {import('../types').AnyFunction} AnyFunction */

/**
 * A higher-order reducer creator which invokes the original reducer only if
 * the dispatching action matches the given predicate, **OR** if state is
 * initializing (undefined).
 *
 * @param {AnyFunction} isMatch Function predicate for allowing reducer call.
 *
 * @return {AnyFunction} Higher-order reducer.
 */
const ifMatchingAction = isMatch => reducer => (state, action) => {
  if (state === undefined || isMatch(action)) {
    return reducer(state, action);
  }
  return state;
};
export default ifMatchingAction;
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