Parsing Ethers BigNumbers from JSON fetch

[joehquak]

Hi All
We're storing some of our data generated by ethers into a database and we call it back via the API.

We've got a lot of nested objects that are Ethers BigNumbers, but JSON.parse does not handle them due to the object construction

Ethers BigNumbers are constructed like this, using keys _hex & _isBigNumber:
{ _hex: "0x01", _isBigNumber:true }

Has anyone come up with a reasonable solution to parsing or storing objects that contain big numbers generated by Ethers library?

Thanks
Joe

[ricmoo]

I would recommend storing them as text = bigNumberValue.toString() and then restoring them as BigNumber.from(text). You can also use the .toHexString() method, but the BigNumber class is quite flexible as to what it accepts. :)

You can also just pass in that value to a BigNumber, i.e. this works:

> BigNumber.from({ _hex: "0x01", _isBigNumber:true })
BigNumber { value: "1" }