How to feature test for BigInt support?

Question

154 views Asked by user894319twitter At 23 November 2024 at 10:34

I'm not familiar with modern JS and tooling to even try something.

References:

There are 4 answers

user894319twitter On 17 November 2023 at 02:13

globalThis.BigInt === BigInt without any polyfill.

console.log(globalThis.BigInt === BigInt);

I did just 2 tests with Firefox 119.1.1 and it seems to work... Second test had intentional typo and failed as expected.

References:

I can't edit my older answer for some reason...

AKX On 16 November 2023 at 07:04

if('BigInt' in window) (or if(window.BigInt)) should suffice.

user894319twitter On 16 November 2023 at 08:25

globalThis.BigInt === BigInt

core-js's polyfill requires Chrome 71 or Firefox 65.

References:

**gog** · Accepted Answer · 2023-11-16 09:29:29

gog On 16 November 2023 at 09:29 BEST ANSWER

Simply invoke BigInt and catch a possible exception:

let BigIntSupported = true

try {
    BigInt(1)
} catch (e) {
    BigIntSupported = false

}