text: /**
   * @file Implementation of the page block
   */
  
  import LazyLoader from '../../../js/utils/lazy-loader';
  import info from '../../info/info';
  
  // TODO: import other blocks
  
  // -------------------------- BEGIN MODULE VARIABLES --------------------------
  
  const RESIZE_INTERVAL = 200;    // Resize event debouncing interval
  const SCROLL_INTERVAL = 200;    // Scroll event throttling interval
  
  let resizeTimer = null;
  
  let scrollTimer = null;
  let wasScrolled = false;
  
  // --------------------------- END MODULE VARIABLES ---------------------------
  
  // --------------------------- BEGIN EVENT HANDLERS ---------------------------
  
  /**
   * Handle the window scroll event
   */
  function handleWindowScroll() {
      LazyLoader.scanImages();
  
      // TODO: add code
  }
  
  /**
   * Handle the window resize event
   */
  function handleWindowResize() {
      // TODO: add code
  }
  
  /**
   * Debounce the window resize event
   */
  function debounceWindowResize() {
      clearTimeout(resizeTimer);
      resizeTimer = setTimeout(handleWindowResize, RESIZE_INTERVAL);
  }
  
  /**
   * Throttle the window scroll event
   */
  function throttleWindowScroll() {
      if (scrollTimer) {
          // Ensure that we catch and execute that last invocation.
          wasScrolled = true;
          return;
      }
  
      handleWindowScroll();
  
      scrollTimer = this.setTimeout(function() {
          scrollTimer = null;
          if (wasScrolled) {
              handleWindowScroll();
              wasScrolled = false;
          }
      }, SCROLL_INTERVAL);
  }
  
  // ---------------------------- END EVENT HANDLERS ----------------------------
  
  // --------------------------- BEGIN PUBLIC METHODS ---------------------------
  
  /**
   * Initialize the page block.
   * @return true
   */
  function initBlock() {
      $(window).on({
          resize: debounceWindowResize,
          scroll: throttleWindowScroll,
      });
  
      LazyLoader.init();
  
      // TODO: initialize other blocks
      info.initBlock();
  
      // Process the initial window size and scroll position
      handleWindowResize();
      handleWindowScroll();
  
      return true;
  }
  
  // ---------------------------- END PUBLIC METHODS ----------------------------
  
  export default {
      initBlock,
  };
  