Version 1

[yaffs-website] / node_modules / phantomjs-prebuilt / node_modules / uuid / lib / rng-browser.js

diff --git a/node_modules/phantomjs-prebuilt/node_modules/uuid/lib/rng-browser.js b/node_modules/phantomjs-prebuilt/node_modules/uuid/lib/rng-browser.js
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+++ b/node_modules/phantomjs-prebuilt/node_modules/uuid/lib/rng-browser.js
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+// Unique ID creation requires a high quality random # generator.  In the
+// browser this is a little complicated due to unknown quality of Math.random()
+// and inconsistent support for the `crypto` API.  We do the best we can via
+// feature-detection
+var rng;
+
+var crypto = global.crypto || global.msCrypto; // for IE 11
+if (crypto && crypto.getRandomValues) {
+  // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto
+  var rnds8 = new Uint8Array(16);
+  rng = function whatwgRNG() {
+    crypto.getRandomValues(rnds8);
+    return rnds8;
+  };
+}
+
+if (!rng) {
+  // Math.random()-based (RNG)
+  //
+  // If all else fails, use Math.random().  It's fast, but is of unspecified
+  // quality.
+  var  rnds = new Array(16);
+  rng = function() {
+    for (var i = 0, r; i < 16; i++) {
+      if ((i & 0x03) === 0) r = Math.random() * 0x100000000;
+      rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;
+    }
+
+    return rnds;
+  };
+}
+
+module.exports = rng;