BigInt not support yet

[willin]

The version of ESLint you are using.

6.8.0

The problem you want to solve.

BigInt Support

Your take on the correct solution to problem.

console.log(1 === 1n);
// Parsing error: Identifier directly after number

console.log(BigInt(1));
// 'BigInt' is not defined.

[anikethsaha]

Can you share your eslint config ?
BigInt I think is available from es2020

parserOptions: { ecmaVersion: 2020 }

[eslint-deprecated]

Hi @willin, thanks for the issue. It looks like there's not enough information for us to know how to help you.

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2. What you did (the source code and ESLint configuration)
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4. What you expected to happen instead

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If it's something else, please just provide as much additional information as possible. Thanks!

[willin]

@anikethsaha https://github.com/tc39/proposals/blob/master/finished-proposals.md

besides, Optional Chaining is not supported too.

[anikethsaha]

@anikethsaha https://github.com/tc39/proposals/blob/master/finished-proposals.md

yes, 2020 as I mentioned

besides, Optional Chaining is not supported too.

this is work in progress.

[willin]

root: true
extends: shiwangme
parserOptions:
  ecmaVersion: 2020

when i add ecmaVersion:

console.log(BigInt(1));
// 'BigInt' is not defined.
console.log(1n === 1);
// ok

const a = {};
console.log(a?.b);
// Parsing error: Unexpected token .

[anikethsaha]

console.log(BigInt(1));

is

console.log(1n) //  use this one

Or else , try using babel-eslint if you want to use BigInt , though I am not sure about this whether they support it or not.

const a = {};
console.log(a?.b);
// Parsing error: Unexpected token .

its still in work in progress state, check this one #12642

Hope this helps 👍

[willin]

thx