Given the following: ``` js // global.Buffer should be the buffer module from npm var array = new Uint8Array([1,2,3]) var buf = toBuffer(array) assert(Buffer.isBuffer(buf)) // throws ``` The reason for this is that the `isBuffer` check checks for `._isBuffer` on the element but the code path on here https://github.com/feross/typedarray-to-buffer/blob/master/index.js#L17-L19 does not add that property.