AC-2546: update built-in underscore.js to 1.13.2

Author: karyna-t

lib/web/underscore.js

@@ -7,13 +7,13 @@
                 exports.noConflict = function () { global._ = current; return exports; };
             }()));
 }(this, (function () {
-    //     Underscore.js 1.13.1
+    //     Underscore.js 1.13.2
     //     https://underscorejs.org
     //     (c) 2009-2021 Jeremy Ashkenas, Julian Gonggrijp, and DocumentCloud and Investigative Reporters & Editors
     //     Underscore may be freely distributed under the MIT license.
 
     // Current version.
-    var VERSION = '1.13.1';
+    var VERSION = '1.13.2';
 
     // Establish the root object, `window` (`self`) in the browser, `global`
     // on the server, or `this` in some virtual machines. We use `self`
@@ -249,7 +249,7 @@
         var hash = {};
         for (var l = keys.length, i = 0; i < l; ++i) hash[keys[i]] = true;
         return {
-            contains: function(key) { return hash[key]; },
+            contains: function(key) { return hash[key] === true; },
             push: function(key) {
                 hash[key] = true;
                 return keys.push(key);
@@ -1513,6 +1513,19 @@
         return result;
     }
 
+    // Safely create a real, live array from anything iterable.
+    var reStrSymbol = /[^\ud800-\udfff]|[\ud800-\udbff][\udc00-\udfff]|[\ud800-\udfff]/g;
+    function toArray(obj) {
+        if (!obj) return [];
+        if (isArray(obj)) return slice.call(obj);
+        if (isString(obj)) {
+            // Keep surrogate pair characters together.
+            return obj.match(reStrSymbol);
+        }
+        if (isArrayLike(obj)) return map(obj, identity);
+        return values(obj);
+    }
+
     // Sample **n** random values from a collection using the modern version of the
     // [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
     // If **n** is not specified, returns a single random element.
@@ -1522,7 +1535,7 @@
             if (!isArrayLike(obj)) obj = values(obj);
             return obj[random(obj.length - 1)];
         }
-        var sample = isArrayLike(obj) ? clone(obj) : values(obj);
+        var sample = toArray(obj);
         var length = getLength(sample);
         n = Math.max(Math.min(n, length), 0);
         var last = length - 1;
@@ -1599,19 +1612,6 @@
         result[pass ? 0 : 1].push(value);
     }, true);
 
-    // Safely create a real, live array from anything iterable.
-    var reStrSymbol = /[^\ud800-\udfff]|[\ud800-\udbff][\udc00-\udfff]|[\ud800-\udfff]/g;
-    function toArray(obj) {
-        if (!obj) return [];
-        if (isArray(obj)) return slice.call(obj);
-        if (isString(obj)) {
-            // Keep surrogate pair characters together.
-            return obj.match(reStrSymbol);
-        }
-        if (isArrayLike(obj)) return map(obj, identity);
-        return values(obj);
-    }
-
     // Return the number of elements in a collection.
     function size(obj) {
         if (obj == null) return 0;