bigdecimal.js

Sample Usage:

const { Big } = require('bigdecimal.js');

// Constructor accepts any value such as string and BigDecimal itself:

const x = Big('1.1111111111111111111111');
const y = Big(x);

const z = x.add(y);
console.log(z.toString()); // 2.2222222222222222222222


const u = Big(1.1);
const v = Big(2n);

// You can also construct a BigDecimal from a number or a BigInt:

console.log(u.toString()); // 1.1
console.log(v.toString()); // 2

throws

RangeError on following situations:

• If value is a number:
  • Value is not in the range [Number.MIN_VALUE, Number.MAX_VALUE]
  • Both scale and precision is provided. You can only give one of scale and mc. Passing undefined is same as omitting.
• If value is not a number, a BigInt or a BigDecimal, it will be converted to string. An error will be thrown if the string format is invalid.

Sample Usage:

const { Big, MathContext, RoundingMode } = require('bigdecimal.js');

const x = Big('1');
const y = Big('3');

const res1 = x.divide(y, new MathContext(3));
console.log(res1.toString()); // 0.333

const res2 = x.divide(y, MathContext(3, RoundingMode.UP)); // You can also use without `new` operator
console.log(res2.toString()); // 0.334

try {
    x.divide(y);
    // throws since full precision is requested but it is not possible
} catch (e) {
    console.log(e); // RangeError: Non-terminating decimal expansion; no exact representable decimal result.
}