# All files / logic imageLoader.js

96% Statements 24/25
78.57% Branches 11/14
100% Functions 3/3
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     // @flow
    import filterImgSrc from '../utils/filterSrcset';
    import fetchImage from './fetchImage';
    import applyImage from './applyImage';
    import logError from '../utils/logError';
    import setImageHeight from '../utils/setImageHeight';
    import updateSessionStorage from './updateSessionStorage';

    export default function imageLoader(target: any) {
      try {
        const image = new Image(); // eslint-disable-line no-undef

        const { observer, imgLoadingRefs } = window.__REACT_SIMPLE_IMG__;
        const src = filterImgSrc(target);

        observer.unobserve(target);
        imgLoadingRefs.set(target, image);

        if (!src) {
          logError('Filter Image source returned empty image source', target);
          return;
        }

        if (target.parentNode && target.parentNode.style.height === '1px') {
          setImageHeight(image, target);
        }

        fetchImage(image, src)
          .then(() => {
            Eif (target) {
              applyImage(target, image, src);

              Iif (!window.__REACT_SIMPLE_IMG__) return;
              const { disableAnimateCachedImg, callBackRefs } = window.__REACT_SIMPLE_IMG__;

              if (disableAnimateCachedImg) {
                updateSessionStorage(src);
              }

              const callback = callBackRefs.get(target);

              Eif (callback) {
                callback();
                callBackRefs.delete(target);
              }
            }
          })
          .catch(e => {
            logError('Fetch image failed with target', target, e);
          });
      } catch (e) {
        logError('Image loader failed with target', target, e);
      }
    }