Precision fix for $string function

[iovanom]

Related to #761

[Turings98apprentice]

If you add just one more digit to the formatBase test, it fails. I think a true fix to this issue would involve incorporating something like BigDecimal. That being said, I think the issue this PR seeks to solve is better solved by simply using a string for large user IDs instead of integers.

[iovanom]

Yes, it will fail, but not because of the JSONata library. JavaScript works that way. :)

You can see the example:

const a = 58908407122430764;
console.log(a); // output 58908407122430770
console.log(a.toString()) // the same 58908407122430770

const b = '58908407122430764';
const c = parseInt(b);
console.log(c); // output 58908407122430770

The fix is not related to the $fromBase function; it’s related to the $string function. The issue with the string implementation isn’t due to JavaScript limitations but rather the precision parameter within the JSONata library.

I completely agree that it’s better to have a string representation for the ID, but we can’t control the third-party API that returns the ID in number format.

[andrew-coleman]

Thank you!