A small project written the way a Tabler 1.5 user would write it. It must compile and behave the same on the last release from npm and on the working tree. pnpm run check:compat-fixture runs it against both.

project.scss configures and reads 1.5 Sass variables, and calls 1.5 functions and mixins.
page.html loads the compiled files from dist/ with 1.5 markup, the libraries from dist/libs, and the old JavaScript helpers.

Do not update this project when Tabler changes. When a check fails, fix Tabler: see the backward-compat skill. Add to it only when a new kind of break shows that it missed something a real project does.