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1 files changed, 27 insertions, 0 deletions

diff --git a/node_modules/to-arraybuffer/index.js b/node_modules/to-arraybuffer/index.js
new file mode 100644
index 00000000..2f69ae0c
--- /dev/null
+++ b/node_modules/to-arraybuffer/index.js
@@ -0,0 +1,27 @@
+var Buffer = require('buffer').Buffer
+
+module.exports = function (buf) {
+	// If the buffer is backed by a Uint8Array, a faster version will work
+	if (buf instanceof Uint8Array) {
+		// If the buffer isn't a subarray, return the underlying ArrayBuffer
+		if (buf.byteOffset === 0 && buf.byteLength === buf.buffer.byteLength) {
+			return buf.buffer
+		} else if (typeof buf.buffer.slice === 'function') {
+			// Otherwise we need to get a proper copy
+			return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength)
+		}
+	}
+
+	if (Buffer.isBuffer(buf)) {
+		// This is the slow version that will work with any Buffer
+		// implementation (even in old browsers)
+		var arrayCopy = new Uint8Array(buf.length)
+		var len = buf.length
+		for (var i = 0; i < len; i++) {
+			arrayCopy[i] = buf[i]
+		}
+		return arrayCopy.buffer
+	} else {
+		throw new Error('Argument must be a Buffer')
+	}
+}