fix(gatsby-plugin-netlify-cms): Don't use StaticQueryMapper #30599
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Description
This PR makes sure that the
StaticQueryMapper
plugin isn't used by the webpack instance ofgatsby-plugin-netlify-cms
.The Netlify CMS plugin is spinning an extra webpack instance with almost every plugin from gatsby. Reusing the
StaticQueryMapper
plugin caused issues given how it's dealing with a Gatsby state.This PR also:
cssTests
variable which wasn't used anymoreexcludeAssets
to be taken into account again. A webpack plugin had been removed to make this package compatible with webpack 5, but the functionality hasn't been put back. (Edit: this means that sincegatsby-plugin-netlify-cms
was made compatible with webpack 5, all of the CSS that is imported is included in its HTML SPA template. Maybe there's a bug report out there already, but that means there could be CSS from the website polluting the CSS of the admin page)Related Issues
Fixes #29951