Make arweave-js more robust against axios default changes (such as from erdjs)

[pctj101]

Main change is in
src/common/transactions.ts

But I had problems getting npm 7 to compile, so I had to change the unmaintained BabelMinify to TerserPlugin

npm test passes with all 46 tests suceeding

---

The challenge is using arweave along with elrond's erdjs. While there is nothing "wrong" with arweave-js, there is a simple tweak that can be done to prevent errors.

erdjs introduces a changes in 2 files to axios which causes arweave-js to fail

https://github.com/ElrondNetwork/elrond-sdk-erdjs/blob/main/src/apiProvider.ts#L94
https://github.com/ElrondNetwork/elrond-sdk-erdjs/blob/main/src/proxyProvider.ts#L184

// See: https://github.com/axios/axios/issues/983
axios.defaults.transformResponse = [
  function(data) {
    return JSONbig.parse(data);
  },
];

This leads to trouble when arweave-js tries to get a string from https://arweave.net/tx_anchor which results in a string which can't parse into JSON.

Example Response:

8TIgL9MZbyLsVQG240q66i8bu9deW51OLp0_ndUUS2hVvorTJBDcspiFU4BfQ0lp

Example Error:

{name: "SyntaxError", message: "Syntax error", at: 2, text: "8TIgL9MZbyLsVQG240q66i8bu9deW51OLp0_ndUUS2hVvorTJBDcspiFU4BfQ0lp"}
at: ​2
message: ​"Syntax error"
name: ​"SyntaxError"
text: ​"8TIgL9MZbyLsVQG240q66i8bu9deW51OLp0_ndUUS2hVvorTJBDcspiFU4BfQ0lp"

Pulling out the axios main packge into window.axx, then forcing the defaults.transformResponse to []  fixes the issue

axx.defaults.transformResponse = []
arwewave.api.request().get("tx_anchor").then((e) => console.log(e)) -> prints out tx_anchor without issue

Since we know that arweave-js will interoperate with many more other libaries, we can make arweave-js more robust by ensuring transformResponse = []  where we know it is not necessary.  As such, we can start with get("tx_anchor") which we know has an issue.

[hlolli]

looks good, can you rebase on master so I can see if the tests pass?

[pctj101]

Let me see if I can remember what I did and get that to you. Thanks for writing back!

[pctj101]

Rebase is in :)

[hlolli]

haha thanks, I realized as I was reviewing another PR, that I forgot to add a key to actually run the test on pull requests. I have no doubt the test will succeed, but it's better to merge with the lights turned on green, so once more, could you rebase again to master 🙏

[pctj101]

Rebased!