BigInt is an inbuilt object in JavaScript that provides a way to represent whole numbers larger than 2⁵³-1 which is the largest number that can represent with the Number primitive. It is represented by the MAX_SAFE_INTEGER constant.

The complete methods of JavaScript BigInt object are listed below:

1. Static methods

• JavaScript BigInt.asIntN() Method
• JavaScript BigInt.asUintN() Method

2. Instance methods

• JavaScript BigInt.prototype.toLocaleString() Method
• JavaScript BigInt.prototype.toString() Method
• JavaScript BigInt.prototype.valueOf() Method