field-file: исправления для IE11

src/blocks/field-file/field-file.js

@@ -6,10 +6,36 @@
 
 ;( function ()
 {
+  function closest(el, selector) {
+    var matchesFn;
+
+    // find vendor prefix
+    ['matches','webkitMatchesSelector','mozMatchesSelector','msMatchesSelector','oMatchesSelector'].some(function(fn) {
+      if (typeof document.body[fn] == 'function') {
+        matchesFn = fn;
+        return true;
+      }
+      return false;
+    })
+
+    var parent;
+
+    // traverse parents
+    while (el) {
+      parent = el.parentElement;
+      if (parent && parent[matchesFn](selector)) {
+        return parent;
+      }
+      el = parent;
+    }
+
+    return null;
+  }
+
   var inputs = document.querySelectorAll( '.field-file__input' );
   Array.prototype.forEach.call( inputs, function( input )
   {
-    var label  = input.closest('.field-file').querySelector( '.field-file__name-text' ),
+    var label  = closest(input, '.field-file').querySelector( '.field-file__name-text' ),
         labelVal = label.innerHTML;
 
     input.addEventListener( 'change', function( e ) {