Fix JSON decoding

[aldur]

Hey team,

I think I found a bug in how we decode json responses; essentially, we always pick the wrong parser.

Look at the following code snippet:

  const assetDetails = await client
    .getAssetByID(ASAIdx)
    .setIntDecoding(algosdk.IntDecoding.BIGINT)
    .do();
  console.log(typeof assetDetails.params.total);

Before: number
Now: bigint

I also think that we should add a unit test for this. My JS skills are somehow limited, but I'd be happy to give it a shot if you point me in the right direction :)

[jasonpaulos]

@aldur thank you for catching this! I agree we should also have a unit test for this before merging.

Perhaps you could make the HTTPClient.parseJSON function public (in order to test it) and add a unit test in tests/9.Client.ts?

[aldur]

Added unit tests :)

[jasonpaulos]

Looks good, thanks!