Remove (some) unsused dependencies

[danielpeintner]

I used npm-check to identify unsued dependencies. Unfortunately, it gives lots of false positives, and it ends up with trial and error 🤷‍♂️

Anyhow, I managed to get rid of some ..

[danielpeintner]

The test runs are green but eslint suggests adding some (indirect?) dependencies back.

[relu91]

The test runs are green but eslint suggests adding some (indirect?) dependencies back.

I think they are not indirect... they are just not covered by tests (?) For example in helpers we need the dep to check if it is really a ThingModel...

[danielpeintner]

I added some dependencies back. The lights are green now. Please take a look.

For example in helpers we need the dep to check if it is really a ThingModel...

This is somehow problematic I think, and I opened #1384.
Let'd discuss this there...

[danielpeintner]

Do you think it is worth removing those unused dependencies in this PR?

[relu91]

I think it is okay, I have a doubt for @jspm/core which should be needed for correct bundle generation. I have to verify.

[relu91]

In my understanding @jspm/core is needed to integrate the lastest changes from this PR. I'd keep it until we try to migrate directly to a new version of esbuild-plugin-polyfill-node which should be https://www.npmjs.com/package/esbuild-plugins-node-modules-polyfill .

[danielpeintner]

I added @jspm/core@2.1.0 back in browser-bundle

The remaining changes are minimal. I let others decide whether it is still worth to merge...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.29%. Comparing base (b948e53) to head (65229d9).
Report is 16 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1383      +/-   ##
==========================================
+ Coverage   77.06%   77.29%   +0.22%     
==========================================
  Files          79       79              
  Lines       15290    15290              
  Branches     1442     1442              
==========================================
+ Hits        11783    11818      +35     
+ Misses       3483     3447      -36     
- Partials       24       25       +1     

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