blog-post-introduction-to-redux-for-web-application-development-07.js

function createStore(reducer, preloadedState) {
  // Store the current state
  var currentState = preloadedState;
  
  // Retrieve the current state
  function getState() {
    return currentState;
  }
  
  // Expose the API
  return {
    getState: getState,
  };
}