refs https://github.com/TryGhost/Team/issues/1694
- Added replacements option to `@tryghost/minifier` + updated documentation and name of 'options' param which was a bit confusing.
- At compile time, we'll replace `'{{SITE_ORIGIN}}'` with the actual and JS encoded origin string.
- Block requests to the auth frame with the wrong origin, but log a warning for now to make debugging easier.
- Limit who can read the response messages by origin
- As a library, minifier should be subject to 100% coverage
- minor change to the code combining globbing and file reading into a single function for error handling any case where the files can't be found or read
- we could do more fine grained errors here, but that seems unnecessary given that the usecase is internal, not for user files at the moment
- added error case tests to capture all the uncovered lines
- Uglify was really slow and clunky, so replaced with terser which is fast and simple
- Ensured test cleanup works properly so we can be sure about the state of files during tests
- Changed the output from being the absolute path to just the "dest" value, as that is much more useful as absolute paths include local machine path names
- Fixed async/await issue that got the whole thing working 100%
- wired up a basic minification package
- accepts config for css or js files and can concat and minify them into a single file for each type
- this will be used for generating merged css and js files for various cards, controlled by theme config
