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ci(primitives): transition to new css primitives #338

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Commits on Aug 14, 2024

  1. ci(primitives): transition to new css primitives

    GitHub no longer distributes primitives in JSON format. Also, the names
    of the values (i.e. CSS variables) have changed. Most of the new names
    correspond 1-to-1 with one of the old names. Some colors have also
    changed slightly (e.g. `fg-default`), but otherwise remain mostly the
    same. See https://primer.style/foundations/primitives/migrating.
    
    Source color primitives from `@primer/primitives/dist/internalCss`
    instead of `@primer/primitives/dist/css/functional/themes` as only the
    former directory contains the base colors (scales).
    
    Convert new primer css primitives/variables directly to lua in
    .github/workflows/csstolua.lua (runs in CI). This script generates some
    debugging info in case an error occurs (which can be found in CI logs).
    Convert to a nested table structure for idiomatic usage in lua. The
    primitives table now provides type-hints via lsp, and accessing invalid
    names at runtime will throw an error. Append `.default` to
    names/keypaths which are too short and would otherwise collide with
    existing tables.
    
    - `scale` no longer exists, but is still provided (by us) for
      backwards-compatibility and ergonomics. The new names are in the
      format of `base.color.red[4]` (for example to access `scale.red[5]`).
      The values in `scale` are 1-indexed for lua, but the original upstream
      names (in `base.color.*`) are 0-indexed and left untouched.
    
    - `scale.gray` no longer exists, use `scale.neutral` in its place
    
    - `*.subtle` variants no longer exist, see the link above for the
      corresponding replacements
    tmillr committed Aug 14, 2024
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