docs tooling uses outdated 'highlights' library

[adidahiya]

Blueprint docs used to highlight code using atom/highlights, which supported TextMate-style grammars via atom/first-mate.

Although highlights did not have TypeScript support out of the box, we were able to add it using a library called tree-sitter-typescript.

Atom and its repositories were finally sunsetted and archived at the end of 2022. This and the fact that tree-sitter has C dependencies which sometimes do not compile well on newer versions of Node.js prompted a migration away from highlights.

This issue tracks the removal of all highlights, tree-sitter, and TextMate related code from Blueprint.

[SoulPancake]

Is this migration completed? @adidahiya Or is there anything else to be done here

[adidahiya]

@SoulPancake it's mostly complete. There are just these deprecated styles which need to be removed in v5.0:

blueprint/packages/docs-theme/src/styles/_textmate-syntax-theme.scss

Line 6 in 61a0ef8

// DEPRECATED styles, will be removed in Blueprint v5.0