arrays are not objects?

[espruino-discuss]

Posted at 2015-11-26 by tve

I'm trying to port a deepEqual function to compare two objects and I encountered this problem. In Espruino:

>var a = [1,2]
=[ 1, 2 ]
>a instanceof Object
=false

in Chrome:

var a = [1,2]
undefined
a instanceof Object
true

Is there already a deepEqual function for Espruino? I want it to compare the output of test code...

[gfwilliams]

Posted at 2015-11-27 by @gfwilliams

Depends what you're doing, but you could just convert both objects to a String with JSON.stringify and compare the strings?

Can you file a bug for instanceof? I'm kind of surprised about that - I thought those kind of issues had been ironed out a while back.

I think in JS, an array is Array, which is also an instance of Object. Espruino currently has a bit of a shonky prototype chain implementation, and it's possible instanceof has fallen foul of that.