Websocket

[VSoRC/.git] / node_modules / websocket / node_modules / typedarray-to-buffer / index.js

diff --git a/node_modules/websocket/node_modules/typedarray-to-buffer/index.js b/node_modules/websocket/node_modules/typedarray-to-buffer/index.js
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+/**
+ * Convert a typed array to a Buffer without a copy
+ *
+ * Author:   Feross Aboukhadijeh <https://feross.org>
+ * License:  MIT
+ *
+ * `npm install typedarray-to-buffer`
+ */
+
+var isTypedArray = require('is-typedarray').strict
+
+module.exports = function typedarrayToBuffer (arr) {
+  if (isTypedArray(arr)) {
+    // To avoid a copy, use the typed array's underlying ArrayBuffer to back new Buffer
+    var buf = Buffer.from(arr.buffer)
+    if (arr.byteLength !== arr.buffer.byteLength) {
+      // Respect the "view", i.e. byteOffset and byteLength, without doing a copy
+      buf = buf.slice(arr.byteOffset, arr.byteOffset + arr.byteLength)
+    }
+    return buf
+  } else {
+    // Pass through all other types to `Buffer.from`
+    return Buffer.from(arr)
+  }
+}