index.js

import hljs from "highlight.js/lib/core";

hljs.registerLanguage("pikelet", (hljs) => {
  const KEYWORDS = {
    keyword: "as fun Fun record Record",
    built_in: "Type Bool true false U8 U16 U32 U64 S8 S16 S32 S64 F32 F64 String Char Array List",
  };

  const CHARACTER = {
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    begin: /'([^'\\]|\\.)*'/,
  };
  const STRING = {
    className: "string",
    begin: /"([^"\\]|\\.)*"/,
  };
  const NUMBER = {
    className: "number",
    begin: /\b[-+]?[0-9][a-zA-Z0-9_\.]*\b/,
    relevance: 0,
  };

  const COMMENT = {
    variants: [
      hljs.COMMENT("--", "$"),
      hljs.COMMENT("|||", "$"),
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      COMMENT,

      { begin: "->|<-" }, // No markup, relevance booster
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