- Document all GA/GTM-related variables in `template-config.js`
- Add `gtm_env_auth` variable (from `GTM_ENV_AUTH` environment variable)
to enable alternative GTM environments
This will let us test new GTM configurations in staging without sending
the data to our production data stream.
Move the rest of the configuration into template-config.js. This way the options are explicitly in the same namespace so we won't be surprised when we add a variable with the same name as an html-webpack-plugin option.
Rename template extension to ejs for syntax-coloring purposes.
Now that Raven is bundled with webpack, it's not available in the global context, so require it and configure it within the init module.
I struggled to figure out how to expose the raven-js module as a global, as all the combinations of `externals` and `ProvidePlugin` only applied to webpacked modules, not the global window. The correct way to do it seems to be exports-loader but that looked rather hacky and hard to understand.
