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DEV: Add support for aliases in HighlightJS languages (#20380)

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We were only supporting the main name of each HighlightJS language. So, by default, you could not use `js` or `jsx` to highlight Javascript, given they are aliases for `javascript`.

This PR adds a list of aliases as a constant to core (built via a rake task), and then checks against the `highlighted_languages` site settings plus the list of aliases when processing a code block.
This commit is contained in:
Penar Musaraj
2023-02-23 15:06:06 -05:00
committed by GitHub
parent 6108eee31d
commit c052df412a
4 changed files with 184 additions and 4 deletions
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26
lib/tasks/javascript.rake
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@ -182,6 +182,32 @@ task "javascript:update_constants" => :environment do
export const replacements = #{Emoji.unicode_replacements_json};
JS
langs = []
Dir
.glob("vendor/assets/javascripts/highlightjs/languages/*.min.js")
.each { |f| langs << File.basename(f, ".min.js") }
bundle = HighlightJs.bundle(langs)
ctx = MiniRacer::Context.new
hljs_aliases = ctx.eval(<<~JS)
#{bundle}
let aliases = {};
hljs.listLanguages().forEach((lang) => {
if (hljs.getLanguage(lang).aliases) {
aliases[lang] = hljs.getLanguage(lang).aliases;
}
});
aliases;
JS
write_template("pretty-text/addon/highlightjs-aliases.js", task_name, <<~JS)
export const HLJS_ALIASES = #{hljs_aliases.to_json};
JS
ctx.dispose
write_template("pretty-text/addon/emoji/version.js", task_name, <<~JS)
export const IMAGE_VERSION = "#{Emoji::EMOJI_VERSION}";
JS