style: 4 space indents to the JS files

_javascript/utils/img-extra.js

@@ -1,47 +1,46 @@
 /**
-  Lazy load images (https://github.com/ApoorvSaxena/lozad.js)
-  and popup when clicked (https://github.com/dimsemenov/Magnific-Popup)
-*/
+ Lazy load images (https://github.com/ApoorvSaxena/lozad.js)
+ and popup when clicked (https://github.com/dimsemenov/Magnific-Popup)
+ */
 
-$(function() {
+$(function () {
+    const IMG_SCOPE = '#main > div.row:first-child > div:first-child';
 
-  const IMG_SCOPE = '#main > div.row:first-child > div:first-child';
-
-  if ($(`${IMG_SCOPE} img`).length <= 0 ) {
-    return;
-  }
-
-  /* lazy loading */
-
-  const imgList = document.querySelectorAll(`${IMG_SCOPE} img[data-src]`);
-  const observer = lozad(imgList);
-  observer.observe();
-
-  /* popup */
-
-  $(`${IMG_SCOPE} p > img[data-src],${IMG_SCOPE} img[data-src].preview-img`).each(
-    function() {
-      let nextTag = $(this).next();
-      const title = nextTag.prop('tagName') === 'EM' ? nextTag.text() : '';
-      const src = $(this).attr('data-src'); // created by lozad.js
-
-      $(this).wrap(`<a href="${src}" title="${title}" class="popup"></a>`);
+    if ($(`${IMG_SCOPE} img`).length <= 0) {
+        return;
     }
-  );
 
-  $('.popup').magnificPopup({
-    type: 'image',
-    closeOnContentClick: true,
-    showCloseBtn: false,
-    zoom: {
-      enabled: true,
-      duration: 300,
-      easing: 'ease-in-out'
-    }
-  });
+    /* lazy loading */
 
-  /* markup the image links */
+    const imgList = document.querySelectorAll(`${IMG_SCOPE} img[data-src]`);
+    const observer = lozad(imgList);
+    observer.observe();
 
-  $(`${IMG_SCOPE} a`).has('img').addClass('img-link');
+    /* popup */
+
+    $(`${IMG_SCOPE} p > img[data-src], ${IMG_SCOPE} img[data-src].preview-img`).each(
+        function () {
+            let nextTag = $(this).next();
+            const title = nextTag.prop('tagName') === 'EM' ? nextTag.text() : '';
+            const src = $(this).attr('data-src'); // created by lozad.js
+
+            $(this).wrap(`<a href="${src}" title="${title}" class="popup"></a>`);
+        }
+    );
+
+    $('.popup').magnificPopup({
+        type: 'image',
+        closeOnContentClick: true,
+        showCloseBtn: false,
+        zoom: {
+            enabled: true,
+            duration: 300,
+            easing: 'ease-in-out'
+        }
+    });
+
+    /* markup the image links */
+
+    $(`${IMG_SCOPE} a`).has('img').addClass('img-link');
 
 });