BigInt support

[damianobarbati]

On Node 10 the following: pg.types.setTypeParser(20, value => BigInt(value));
Results into error: 'BigInt' is not defined

How to solve this?

[bradennapier]

Both Chrome and Node have now supported BigInt for some time. Would be nice if babel-eslint could parse them.

https://developers.google.com/web/updates/2018/05/bigint
https://v8.dev/blog/bigint

Node implemented in LTS version without flags as of version 10.4

[hzoo]

Via #711 this should be fixed by reading from Babel config, in the next release