Fetch the current block height from multiple block explorers early on in
the sync process. This ensures that we get the correct block height in
the case where our BTCd node is still mid way through syncing. Do this
in the main process rather than in the render process.
Use `CspHtmlWebpackPlugin` to generate our content security policy
using code rather than hard coding meta tags on our html index page.
This provides us a more flexible means to configure our CSP dynamically.
Use `HtmlWebpackPlugin` to generate our final html file so that we can
remove our inline scripts and insert them dynamically based on our
webpack config.
Webpack environment `mode` is defined directly in our environment
specific webpack config files. Due to this, we no longer need to
manually set `NODE_ENV` or check to ensure that it has been set.
See:
- https://webpack.js.org/concepts/mode/
Webpack v4 introduced a new `mode` setting, which - amongst other
things - automates the definition of the NODE_ENV environment variable.
We already had the `mode` settings set in our webpack configs so this
change is just to clean up some redundant code that is handled
automatically by this setting.
See:
- https://webpack.js.org/concepts/mode/
Update all webpack packages to the latest v4.x compatible versions and
update supporting configs. This delivers noticeable performance
improvements to the DX.
Tom Kirkpatrick
Ben Woosley
Jack Mallers
Jason Tarre