JSON.stringify() doesn't know how to serialize a BigInt

Not certain how to handle this situation:

    TypeError: Do not know how to serialize a BigInt
        at JSON.stringify (<anonymous>)

      39 |     toObject() {
    > 40 |         return JSON.parse(JSON.stringify(this));
         |                                ^
      41 |     }

[cliffhall]

@jakobkummerow Ok, makes sense. For anyone else stumbling upon this, the verified TL;DR fix for the above problem is:

    toObject() {
        return JSON.parse(JSON.stringify(this, (key, value) =>
            typeof value === 'bigint'
                ? value.toString()
                : value // return everything else unchanged
        ));
    }

[ADTC]

Wouldn’t it be easier to just monkey patch (hijack) BigInt? That’s the MDN recommendation.

BigInt.prototype.toJSON = function() { return this.toString() }

If you do it this way, you don’t have to add an anonymous function into every call of JSON.stringify. It applies globally to all such calls.