Update checked-in dependencies

node_modules/jszip/lib/nodejsUtils.js

@@ -0,0 +1,57 @@
+'use strict';
+
+module.exports = {
+    /**
+     * True if this is running in Nodejs, will be undefined in a browser.
+     * In a browser, browserify won't include this file and the whole module
+     * will be resolved an empty object.
+     */
+    isNode : typeof Buffer !== "undefined",
+    /**
+     * Create a new nodejs Buffer from an existing content.
+     * @param {Object} data the data to pass to the constructor.
+     * @param {String} encoding the encoding to use.
+     * @return {Buffer} a new Buffer.
+     */
+    newBufferFrom: function(data, encoding) {
+        if (Buffer.from && Buffer.from !== Uint8Array.from) {
+            return Buffer.from(data, encoding);
+        } else {
+            if (typeof data === "number") {
+                // Safeguard for old Node.js versions. On newer versions,
+                // Buffer.from(number) / Buffer(number, encoding) already throw.
+                throw new Error("The \"data\" argument must not be a number");
+            }
+            return new Buffer(data, encoding);
+        }
+    },
+    /**
+     * Create a new nodejs Buffer with the specified size.
+     * @param {Integer} size the size of the buffer.
+     * @return {Buffer} a new Buffer.
+     */
+    allocBuffer: function (size) {
+        if (Buffer.alloc) {
+            return Buffer.alloc(size);
+        } else {
+            var buf = new Buffer(size);
+            buf.fill(0);
+            return buf;
+        }
+    },
+    /**
+     * Find out if an object is a Buffer.
+     * @param {Object} b the object to test.
+     * @return {Boolean} true if the object is a Buffer, false otherwise.
+     */
+    isBuffer : function(b){
+        return Buffer.isBuffer(b);
+    },
+
+    isStream : function (obj) {
+        return obj &&
+            typeof obj.on === "function" &&
+            typeof obj.pause === "function" &&
+            typeof obj.resume === "function";
+    }
+};