Draft: Upgrade to webpack v5 and newer SASS

Closed Fabian Kosmale requested to merge upgrade_deps into react

…to work with newer versions of node and because it is the future™.

This required

  • replacing eslint-loader with eslint-webpack-plugin
  • using a fork of offline-plugin working with v5
  • using webpack serve instead of webpack-dev-server command, adjust to renamed configuration options
  • use new built-in Web Workers support see (https://webpack.js.org/guides/web-workers/)


  • downgrade used version of d3 types to match used library version
  • fixed import issue

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