RangeError: x can't be converted to BigInt because it isn't an integer
当对非整数的数字使用 BigInt() 函数时，会发生 JavaScript 异常 "x 无法转换为 BigInt，因为它不是整数"。
消息
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)
错误类型
哪里出错了？
当使用 BigInt() 函数将数字转换为 BigInt 时，该数字必须是整数（即 Number.isInteger 返回 true）。
示例
无效案例
js
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
有效情况
js
const a = BigInt(1);