"Error: ArrayBuffer(2) not defined"

[Peter W]

Hi,

just a quick NOOB question: why doesn't 

var buffer = new ArrayBuffer(2);

work in a node-red flow?

It throws a 

Reference error: ArrayBuffer is not defined ...

In standard node.js no problem ..

Many thanks - Peter. 

[Dave C-J]

I'm guessing this is on node.js v0.10.x ?

There must be a different implementation of the vm sandbox at that version. By default we do allow the basic js functions in, though we did have to add Buffer. 

Testing the simple flow below does indeed show the problem using node.js v0.10 but works fine on node.js v0.12 and above...

[{"id":"bb7bd143.44843","type":"inject","z":"3812a366.c7ed5c","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"x":160,"y":540,"wires":[["8635a315.79ca6"]]},{"id":"cac516c3.353ae8","type":"debug","z":"3812a366.c7ed5c","name":"","active":true,"console":"false","complete":"false","x":500,"y":540,"wires":[]},{"id":"8635a315.79ca6","type":"function","z":"3812a366.c7ed5c","name":"","func":"var buf = new ArrayBuffer(2);\nbuf[0] = \"A\";\nbuf[1] = \"B\";\nmsg.payload = JSON.stringify(buf);\nreturn msg;","outputs":1,"noerr":0,"x":320,"y":540,"wires":[["cac516c3.353ae8"]]}]

[Peter W]

Thank you!

Indeed on v0.10.38 on Raspberry Pi Zero Raspbian Jessie. Will follow your path and try to get node.js updated ... 

[Dave C-J]

Iff you really need ArrayBuffer then yes...  As I said we have the default node.js Buffer capability in there.

[Peter W]

good news:

• manual upgrade on Raspberry Pi Zero Jessie to node.js v0.12.6 and node-red v0.13.1 worked
• ArrayBuffer now also works

Thanks again,

Peter.