Baseline Widely available
The BigInt() function returns primitive values of type BigInt.
Note: BigInt() can only be called without new. Attempting to construct it with new throws a TypeError.
value
The value to be converted to a BigInt value. It may be a string, an integer, a boolean, or another BigInt.
A BigInt value. Number values must be integers and are converted to BigInts. The boolean value true becomes 1n, and false becomes 0n. Strings are parsed as if they are source text for integer literals, which means they can have leading and trailing whitespaces and can be prefixed with 0b, 0o, or 0x.
RangeError
Thrown if the parameter is a non-integral number.
TypeError
Thrown in one of the following cases:
SyntaxError
Thrown if the parameter is a string that cannot be parsed as a BigInt.
BigInt() is the only case where a number can be converted to a BigInt without throwing, because it's very explicit. However, only integers are allowed.
BigInt(123); // 123n
BigInt(123.3); // RangeError: The number 123.3 cannot be converted to a BigInt because it is not an integer
BigInt("123"); // 123n
BigInt("0b10101"); // 21n, which is 10101 in binary
BigInt("0o123"); // 83n, which is 123 in octal
BigInt("0x123"); // 291n, which is 123 in hexadecimal
BigInt(" 123 "); // 123n, leading and trailing whitespaces are allowed
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