[BUG] Running yarn uiFramework:start fails to build osd-ui-framework

[ashwin-pc]

Describe the bug

The package osd-ui-framework does not build on running yarn uiFramework:start. The biggest issue here seems to be that the dependencies were updated but the docsite build was not run since the update. react-router was updated from 3 to 4 which was a complete rewrite of the package causing a lot of breaking changes. There are a few other issue which make the build fail as well.

1. The packages/osd-ui-framework/doc_site/webpack.config.js file uses the post-css loader but that file now resides in packages/osd-optimizer/postcss.config.js (As a part of this migration: Link). Updating the rule should fix this.

// from 
{
  test: /\.scss$/,
  loaders: ['style-loader', 'css-loader', 'postcss-loader',  'sass-loader'],
  exclude: /node_modules/,
},
// to
{
  test: /\.scss$/,
  loaders: ['style-loader', 'css-loader', {
    loader: 'postcss-loader',
    options: {
      config: {
        path: require.resolve('@osd/optimizer/postcss.config.js')
      },
    }
  }, 'sass-loader'],
  exclude: /node_modules/,
},

2. There is the line referencing a missing elastic svg logo (Code)

These are the 3 main issues i've identified but there may be more. Migrating the router is what held me off from just jumping in and fixing this.

To Reproduce
Steps to reproduce the behavior:

1. Run yarn uiFramework:start
2. The build fails and the server fails to start up

Expected behavior
Expected the server to start and load the components

OpenSearch Version
1.0.0

Dashboards Version
1.0.0

Plugins

Please list all plugins currently enabled.

Screenshots

If applicable, add screenshots to help explain your problem.

Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Browser and version [e.g. 22]

Additional context

This package seems to host many UI components, but i cant seem to find any references to it within the actual application.

[tmarkley]

I confirmed that yarn build, yarn build:types, yarn uiFramework:build, and yarn uiFramework:start all fail with the latest changes in main.