index.js

import { LOAD_IMG, WALLPAPER_PATH_PREFIX } from '../../constants';

export default function (url) {

  const bigImg = new Image();
  bigImg.src = `${WALLPAPER_PATH_PREFIX}${url}`;

  bigImg.onload = () => {
    return {
      type: LOAD_IMG,
      payload: true
    }
  }

  bigImg.onerror = () => {
    return {
      type: LOAD_IMG,
      payload: false,
    }
  }
}