add support for BigInt literal

[LongTengDao]

Feature Use Case

const bigint = 0n;

Feature Proposal

Don't throw Error: Identifier directly after number.

[LongTengDao]

@lukastaegert Hi~ Is this problem in process?

[lukastaegert]

As this is not an official language feature, you need the appropriate acorn plugin: https://github.com/acornjs/acorn-bigint

Does this work for you in Rollup@1.0?

[LongTengDao]

@lukastaegert

Really thanks and sorry, I didn't know BigInt is not standard yet, because Chrome and Nodejs had supported it. I tried in Firefox and Edge, indeed it's only supported by v8 privately.

And your suggest works (rollup({ acornInjectPlugins: [ require('acorn-bigint') ] })), thanks!

There is a bug with ** operator. Never mind. I opened an issue there.

[LongTengDao]

Oh, the problem may be in rollup. I opened a new issue #2626 @lukastaegert