Can't represent large constants

[jyasskin]

WebIDL allows constants of the 64-bit integer type unsigned long long. However, this library tries to represent them as a javascript number, which means that large numbers get rounded. jyasskin@48a2400 demonstrates this.

[darobin]

Yeah, but last I checked TC-39 had rejected bigger number support. I'm not sure how to handle this gracefully (a string isn't a good option). Maybe using node-int64 (which I think can be browserified)?

I wonder if this should be in WebIDL in the first place.

[jyasskin]

As long as we're happy with ReSpec rounding large numbers to the nearest double, this isn't urgent for me.

[darobin]

Yeah, if someone adds a large numeric constant we should probably slap them in the face anyway.