Support Uint8Array values

Author: jscissr

lib/utils.js

@@ -50,6 +50,13 @@ var prepareValue = function (val, seen) {
   if (val instanceof Buffer) {
     return val
   }
+  if (ArrayBuffer.isView(val)) {
+    var buf = Buffer.from(val.buffer, val.byteOffset, val.byteLength)
+    if (buf.length === val.byteLength) {
+      return buf
+    }
+    return buf.slice(val.byteOffset, val.byteOffset + val.byteLength) // Node.js v4 does not support those Buffer.from params
+  }
   if (val instanceof Date) {
     if (defaults.parseInputDatesAsUTC) {
       return dateToStringUTC(val)

test/unit/utils-tests.js

@@ -53,6 +53,13 @@ test('prepareValues: buffer prepared properly', function () {
   assert.strictEqual(buf, out)
 })
 
+test('prepareValues: Uint8Array prepared properly', function () {
+  var buf = new Uint8Array([1, 2, 3]).subarray(1, 2)
+  var out = utils.prepareValue(buf)
+  assert.ok(Buffer.isBuffer(out))
+  assert.deepEqual(out, [2])
+})
+
 test('prepareValues: date prepared properly', function () {
   helper.setTimezoneOffset(-330)