polyfills for IE11 compatibility

civicmapper · Nov 21, 2017 · 009b63e · 009b63e
1 parent 16aebbc
commit 009b63e
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diff --git a/project/static/js/backCompat.js b/project/static/js/backCompat.js
@@ -0,0 +1,56 @@
+/**
+ * enable compatibility with our TurfJS 5 build and IE11
+ */
+if (!Array.prototype.fill) {
+  Object.defineProperty(Array.prototype, 'fill', {
+    value: function(value) {
+
+      // Steps 1-2.
+      if (this == null) {
+        throw new TypeError('this is null or not defined');
+      }
+
+      var O = Object(this);
+
+      // Steps 3-5.
+      var len = O.length >>> 0;
+
+      // Steps 6-7.
+      var start = arguments[1];
+      var relativeStart = start >> 0;
+
+      // Step 8.
+      var k = relativeStart < 0 ?
+        Math.max(len + relativeStart, 0) :
+        Math.min(relativeStart, len);
+
+      // Steps 9-10.
+      var end = arguments[2];
+      var relativeEnd = end === undefined ?
+        len : end >> 0;
+
+      // Step 11.
+      var final = relativeEnd < 0 ?
+        Math.max(len + relativeEnd, 0) :
+        Math.min(relativeEnd, len);
+
+      // Step 12.
+      while (k < final) {
+        O[k] = value;
+        k++;
+      }
+
+      // Step 13.
+      return O;
+    }
+  });
+}
+Number.isInteger = Number.isInteger || function(value) {
+  return typeof value === 'number' && 
+    isFinite(value) && 
+    Math.floor(value) === value;
+};
+Math.trunc = Math.trunc || function(x) {
+  var n = x - x%1;
+  return n===0 && (x<0 || (x===0 && (1/x !== 1/0))) ? -0 : n;
+};
diff --git a/project/static/libs/modernizr-custom.js b/project/static/libs/modernizr-custom.js
diff --git a/project/static/libs/respond-1.4.2.min.js b/project/static/libs/respond-1.4.2.min.js
diff --git a/project/templates/pages/index.html b/project/templates/pages/index.html
@@ -21,6 +21,12 @@
         }
     </style>
 
+    <!-- scripts -->
+    <script src="{{ url_for('static', filename='libs/modernizr-custom.js')}}"></script>
+    <script src="{{ url_for('static', filename='js/backCompat.js')}}"></script>
+    <!--[if lt IE 9]><script src="{{ url_for('static', filename='libs/respond-1.4.2.min.js')}}"></script><![endif]-->
+    <!-- /scripts -->
+
 </head>
 
 <body>