BigInt support breaks in 1.10.0 and later + "Support BigInt in the operators (Incomplete NumeralJs issue/feature request #778)"

[ryanwh-dw]

So this issue could be "ported over" from numeral adamwdraper/Numeral-js#778 as it is still relevant and would be a welcome improvement.

I've also noticed that to get BigInt support it is possible to revert to older versions of numbro, but it is broken from 1.10.x and later, unless the expected implementation has changed.

The latest version I could find that is working is 1.9.3. See the code below with links for a very simple example.

import numbro from "numbro";
const value = BigInt(1000);

const testBigInt = numbro(value);

const elem = document.getElementById("app");

elem?.append(`${testBigInt.value()}`);

1.9.3 example - working
https://codesandbox.io/p/sandbox/working-bigint-w6wgvr

1.10.0 example - broken with Invalid input error
https://codesandbox.io/p/sandbox/broken-bigint-1-10-f6ny9f

2.4.0 example - broken with Cannot convert a BigInt value to a number error (still using legacy Old Format in example)
https://codesandbox.io/p/sandbox/broken-bigint-ttwsz4