The JavaScript exception "x can't be converted to BigInt because it isn't an integer" occurs when the BigInt() function is used on a number that isn't an integer.
The JavaScript exception "x can't be converted to BigInt because it isn't an integer" occurs when the BigInt() function is used on a number that isn't an integer.
RangeError: The number 1.5 cannot be converted to a BigInt because it is not an integer (V8-based & Firefox) RangeError: Not an integer (Safari)
When using the BigInt() function to convert a number to a BigInt, the number must be an integer (such that Number.isInteger returns true).
const a = BigInt(1.5); // RangeError: The number 1.5 cannot be converted to a BigInt because it is not an integer const b = BigInt(NaN); // RangeError: NaN cannot be converted to a BigInt because it is not an integer
const a = BigInt(1);
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Cant_be_converted_to_BigInt_because_it_isnt_an_integer