Global fetch method impacts other SDKs

[zkxuerb]

Global fetch method impacts other SDKs

The Problem

The SDK calls fetch to load the wasm file, but nodejs' native fetch method cannot read the file so the global fetch method has been modified to cater for this. This affects other sdks that run in the same environment as this sdk which creates issues for certain companies to integrate Aleo using this sdk.

Potential Solution

To get around this issue the global fetch polyfill can possibly be renamed to something else, for example new_fetch(). All the current uses of fetch() within the sdk would be renamed to new_fetch().

Like this the global fetch polyfill would not impact other sdks used within the same environment.