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textmate-highlighter

v1.0.0

Published

An isomorphic syntax highlighter using TextMate grammars and VSCode themes.

Downloads

12

Readme

TextMate Highlighter

An isomorphic syntax highlighter using TextMate grammars and VSCode themes.

This is very similar in approach to Shiki, which you should probably use instead if it works well for you.

Features

  • It works both in browsers and in server-side environments (HTML and ANSI renderers only).
  • It's unopinionated about how Oniguruma, grammars and themes are loaded or from where.
  • It supports various built-in rendering targets: HTML, DOM, ANSI and CSS Custom Highlights.
  • It supports a low-level tokenization mode, for custom render targets.
  • It tries not to block the main thread for a long time, yielding back control every now and then.

Install

npm install --save textmate-highlighter

Usage

import Highlighter from 'textmate-highlighter';

// First of all let's define where to get grammars, themes and Onigiruma from
// You can also pre-fetch some these objects on your own if you want, we'll use URLs here for simplicity
// You can name your grammars differently, but internally some grammars will reference other grammars using these names, so you should registered them like this

const ONIGURUMA = 'https://unpkg.com/[email protected]/release/onig.wasm';

const GRAMMARS = {
  'source.abap': 'https://unpkg.com/shiki@^0.14.5/languages/abap.tmLanguage.json',
  'source.actionscript.3': 'https://unpkg.com/shiki@^0.14.5/languages/actionscript-3.tmLanguage.json',
  'source.ada': 'https://unpkg.com/shiki@^0.14.5/languages/ada.tmLanguage.json',
  'source.apacheconf': 'https://unpkg.com/shiki@^0.14.5/languages/apache.tmLanguage.json',
  'source.apex': 'https://unpkg.com/shiki@^0.14.5/languages/apex.tmLanguage.json',
  'source.apl': 'https://unpkg.com/shiki@^0.14.5/languages/apl.tmLanguage.json',
  'source.applescript': 'https://unpkg.com/shiki@^0.14.5/languages/applescript.tmLanguage.json',
  'source.ara': 'https://unpkg.com/shiki@^0.14.5/languages/ara.tmLanguage.json',
  'source.asm.x86_64': 'https://unpkg.com/shiki@^0.14.5/languages/asm.tmLanguage.json',
  'source.astro': 'https://unpkg.com/shiki@^0.14.5/languages/astro.tmLanguage.json',
  'source.awk': 'https://unpkg.com/shiki@^0.14.5/languages/awk.tmLanguage.json',
  'source.ballerina': 'https://unpkg.com/shiki@^0.14.5/languages/ballerina.tmLanguage.json',
  'source.batchfile': 'https://unpkg.com/shiki@^0.14.5/languages/bat.tmLanguage.json',
  'text.beancount': 'https://unpkg.com/shiki@^0.14.5/languages/beancount.tmLanguage.json',
  'source.berry': 'https://unpkg.com/shiki@^0.14.5/languages/berry.tmLanguage.json',
  'text.bibtex': 'https://unpkg.com/shiki@^0.14.5/languages/bibtex.tmLanguage.json',
  'source.bicep': 'https://unpkg.com/shiki@^0.14.5/languages/bicep.tmLanguage.json',
  'text.html.php.blade': 'https://unpkg.com/shiki@^0.14.5/languages/blade.tmLanguage.json',
  'source.c': 'https://unpkg.com/shiki@^0.14.5/languages/c.tmLanguage.json',
  'source.cadence': 'https://unpkg.com/shiki@^0.14.5/languages/cadence.tmLanguage.json',
  'source.clar': 'https://unpkg.com/shiki@^0.14.5/languages/clarity.tmLanguage.json',
  'source.clojure': 'https://unpkg.com/shiki@^0.14.5/languages/clojure.tmLanguage.json',
  'source.cmake': 'https://unpkg.com/shiki@^0.14.5/languages/cmake.tmLanguage.json',
  'source.cobol': 'https://unpkg.com/shiki@^0.14.5/languages/cobol.tmLanguage.json',
  'source.ql': 'https://unpkg.com/shiki@^0.14.5/languages/codeql.tmLanguage.json',
  'source.coffee': 'https://unpkg.com/shiki@^0.14.5/languages/coffee.tmLanguage.json',
  'source.cpp.embedded.macro': 'https://unpkg.com/shiki@^0.14.5/languages/cpp-macro.tmLanguage.json',
  'source.cpp': 'https://unpkg.com/shiki@^0.14.5/languages/cpp.tmLanguage.json',
  'source.crystal': 'https://unpkg.com/shiki@^0.14.5/languages/crystal.tmLanguage.json',
  'source.cs': 'https://unpkg.com/shiki@^0.14.5/languages/csharp.tmLanguage.json',
  'source.css': 'https://unpkg.com/shiki@^0.14.5/languages/css.tmLanguage.json',
  'source.cue': 'https://unpkg.com/shiki@^0.14.5/languages/cue.tmLanguage.json',
  'source.cypher': 'https://unpkg.com/shiki@^0.14.5/languages/cypher.tmLanguage.json',
  'source.d': 'https://unpkg.com/shiki@^0.14.5/languages/d.tmLanguage.json',
  'source.dart': 'https://unpkg.com/shiki@^0.14.5/languages/dart.tmLanguage.json',
  'source.dax': 'https://unpkg.com/shiki@^0.14.5/languages/dax.tmLanguage.json',
  'source.diff': 'https://unpkg.com/shiki@^0.14.5/languages/diff.tmLanguage.json',
  'source.dockerfile': 'https://unpkg.com/shiki@^0.14.5/languages/docker.tmLanguage.json',
  'source.dm': 'https://unpkg.com/shiki@^0.14.5/languages/dream-maker.tmLanguage.json',
  'source.elixir': 'https://unpkg.com/shiki@^0.14.5/languages/elixir.tmLanguage.json',
  'source.elm': 'https://unpkg.com/shiki@^0.14.5/languages/elm.tmLanguage.json',
  'text.html.erb': 'https://unpkg.com/shiki@^0.14.5/languages/erb.tmLanguage.json',
  'source.erlang': 'https://unpkg.com/shiki@^0.14.5/languages/erlang.tmLanguage.json',
  'source.fish': 'https://unpkg.com/shiki@^0.14.5/languages/fish.tmLanguage.json',
  'source.fsharp': 'https://unpkg.com/shiki@^0.14.5/languages/fsharp.tmLanguage.json',
  'source.gdresource': 'https://unpkg.com/shiki@^0.14.5/languages/gdresource.tmLanguage.json',
  'source.gdscript': 'https://unpkg.com/shiki@^0.14.5/languages/gdscript.tmLanguage.json',
  'source.gdshader': 'https://unpkg.com/shiki@^0.14.5/languages/gdshader.tmLanguage.json',
  'text.gherkin.feature': 'https://unpkg.com/shiki@^0.14.5/languages/gherkin.tmLanguage.json',
  'text.git-commit': 'https://unpkg.com/shiki@^0.14.5/languages/git-commit.tmLanguage.json',
  'text.git-rebase': 'https://unpkg.com/shiki@^0.14.5/languages/git-rebase.tmLanguage.json',
  'source.gjs': 'https://unpkg.com/shiki@^0.14.5/languages/glimmer-js.tmLanguage.json',
  'source.gts': 'https://unpkg.com/shiki@^0.14.5/languages/glimmer-ts.tmLanguage.json',
  'source.glsl': 'https://unpkg.com/shiki@^0.14.5/languages/glsl.tmLanguage.json',
  'source.gnuplot': 'https://unpkg.com/shiki@^0.14.5/languages/gnuplot.tmLanguage.json',
  'source.go': 'https://unpkg.com/shiki@^0.14.5/languages/go.tmLanguage.json',
  'source.graphql': 'https://unpkg.com/shiki@^0.14.5/languages/graphql.tmLanguage.json',
  'source.groovy': 'https://unpkg.com/shiki@^0.14.5/languages/groovy.tmLanguage.json',
  'source.hack': 'https://unpkg.com/shiki@^0.14.5/languages/hack.tmLanguage.json',
  'text.haml': 'https://unpkg.com/shiki@^0.14.5/languages/haml.tmLanguage.json',
  'text.html.handlebars': 'https://unpkg.com/shiki@^0.14.5/languages/handlebars.tmLanguage.json',
  'source.haskell': 'https://unpkg.com/shiki@^0.14.5/languages/haskell.tmLanguage.json',
  'source.hcl': 'https://unpkg.com/shiki@^0.14.5/languages/hcl.tmLanguage.json',
  'source.hjson': 'https://unpkg.com/shiki@^0.14.5/languages/hjson.tmLanguage.json',
  'source.hlsl': 'https://unpkg.com/shiki@^0.14.5/languages/hlsl.tmLanguage.json',
  'text.html.basic': 'https://unpkg.com/shiki@^0.14.5/languages/html.tmLanguage.json',
  'source.http': 'https://unpkg.com/shiki@^0.14.5/languages/http.tmLanguage.json',
  'source.imba': 'https://unpkg.com/shiki@^0.14.5/languages/imba.tmLanguage.json',
  'source.ini': 'https://unpkg.com/shiki@^0.14.5/languages/ini.tmLanguage.json',
  'source.java': 'https://unpkg.com/shiki@^0.14.5/languages/java.tmLanguage.json',
  'source.js': 'https://unpkg.com/shiki@^0.14.5/languages/javascript.tmLanguage.json',
  'text.html.jinja': 'https://unpkg.com/shiki@^0.14.5/languages/jinja-html.tmLanguage.json',
  'source.jinja': 'https://unpkg.com/shiki@^0.14.5/languages/jinja.tmLanguage.json',
  'source.jison': 'https://unpkg.com/shiki@^0.14.5/languages/jison.tmLanguage.json',
  'source.json': 'https://unpkg.com/shiki@^0.14.5/languages/json.tmLanguage.json',
  'source.json5': 'https://unpkg.com/shiki@^0.14.5/languages/json5.tmLanguage.json',
  'source.json.comments': 'https://unpkg.com/shiki@^0.14.5/languages/jsonc.tmLanguage.json',
  'source.json.lines': 'https://unpkg.com/shiki@^0.14.5/languages/jsonl.tmLanguage.json',
  'source.jsonnet': 'https://unpkg.com/shiki@^0.14.5/languages/jsonnet.tmLanguage.json',
  'source.jssm': 'https://unpkg.com/shiki@^0.14.5/languages/jssm.tmLanguage.json',
  'source.js.jsx': 'https://unpkg.com/shiki@^0.14.5/languages/jsx.tmLanguage.json',
  'source.julia': 'https://unpkg.com/shiki@^0.14.5/languages/julia.tmLanguage.json',
  'source.kotlin': 'https://unpkg.com/shiki@^0.14.5/languages/kotlin.tmLanguage.json',
  'source.kusto': 'https://unpkg.com/shiki@^0.14.5/languages/kusto.tmLanguage.json',
  'text.tex.latex': 'https://unpkg.com/shiki@^0.14.5/languages/latex.tmLanguage.json',
  'source.css.less': 'https://unpkg.com/shiki@^0.14.5/languages/less.tmLanguage.json',
  'text.html.liquid': 'https://unpkg.com/shiki@^0.14.5/languages/liquid.tmLanguage.json',
  'source.lisp': 'https://unpkg.com/shiki@^0.14.5/languages/lisp.tmLanguage.json',
  'source.logo': 'https://unpkg.com/shiki@^0.14.5/languages/logo.tmLanguage.json',
  'source.lua': 'https://unpkg.com/shiki@^0.14.5/languages/lua.tmLanguage.json',
  'source.makefile': 'https://unpkg.com/shiki@^0.14.5/languages/make.tmLanguage.json',
  'text.html.markdown': 'https://unpkg.com/shiki@^0.14.5/languages/markdown.tmLanguage.json',
  'text.marko': 'https://unpkg.com/shiki@^0.14.5/languages/marko.tmLanguage.json',
  'source.matlab': 'https://unpkg.com/shiki@^0.14.5/languages/matlab.tmLanguage.json',
  'text.markdown.mdc': 'https://unpkg.com/shiki@^0.14.5/languages/mdc.tmLanguage.json',
  'source.mdx': 'https://unpkg.com/shiki@^0.14.5/languages/mdx.tmLanguage.json',
  'source.mermaid': 'https://unpkg.com/shiki@^0.14.5/languages/mermaid.tmLanguage.json',
  'source.mojo': 'https://unpkg.com/shiki@^0.14.5/languages/mojo.tmLanguage.json',
  'source.narrat': 'https://unpkg.com/shiki@^0.14.5/languages/narrat.tmLanguage.json',
  'source.nextflow': 'https://unpkg.com/shiki@^0.14.5/languages/nextflow.tmLanguage.json',
  'source.nginx': 'https://unpkg.com/shiki@^0.14.5/languages/nginx.tmLanguage.json',
  'source.nim': 'https://unpkg.com/shiki@^0.14.5/languages/nim.tmLanguage.json',
  'source.nix': 'https://unpkg.com/shiki@^0.14.5/languages/nix.tmLanguage.json',
  'source.objc': 'https://unpkg.com/shiki@^0.14.5/languages/objective-c.tmLanguage.json',
  'source.objcpp': 'https://unpkg.com/shiki@^0.14.5/languages/objective-cpp.tmLanguage.json',
  'source.ocaml': 'https://unpkg.com/shiki@^0.14.5/languages/ocaml.tmLanguage.json',
  'source.pascal': 'https://unpkg.com/shiki@^0.14.5/languages/pascal.tmLanguage.json',
  'source.perl': 'https://unpkg.com/shiki@^0.14.5/languages/perl.tmLanguage.json',
  'text.html.php': 'https://unpkg.com/shiki@^0.14.5/languages/php-html.tmLanguage.json',
  'source.php': 'https://unpkg.com/shiki@^0.14.5/languages/php.tmLanguage.json',
  'source.plsql.oracle': 'https://unpkg.com/shiki@^0.14.5/languages/plsql.tmLanguage.json',
  'source.css.postcss': 'https://unpkg.com/shiki@^0.14.5/languages/postcss.tmLanguage.json',
  'source.powerquery': 'https://unpkg.com/shiki@^0.14.5/languages/powerquery.tmLanguage.json',
  'source.powershell': 'https://unpkg.com/shiki@^0.14.5/languages/powershell.tmLanguage.json',
  'source.prisma': 'https://unpkg.com/shiki@^0.14.5/languages/prisma.tmLanguage.json',
  'source.prolog': 'https://unpkg.com/shiki@^0.14.5/languages/prolog.tmLanguage.json',
  'source.proto': 'https://unpkg.com/shiki@^0.14.5/languages/proto.tmLanguage.json',
  'text.pug': 'https://unpkg.com/shiki@^0.14.5/languages/pug.tmLanguage.json',
  'source.puppet': 'https://unpkg.com/shiki@^0.14.5/languages/puppet.tmLanguage.json',
  'source.purescript': 'https://unpkg.com/shiki@^0.14.5/languages/purescript.tmLanguage.json',
  'source.python': 'https://unpkg.com/shiki@^0.14.5/languages/python.tmLanguage.json',
  'source.r': 'https://unpkg.com/shiki@^0.14.5/languages/r.tmLanguage.json',
  'source.perl.6': 'https://unpkg.com/shiki@^0.14.5/languages/raku.tmLanguage.json',
  'text.aspnetcorerazor': 'https://unpkg.com/shiki@^0.14.5/languages/razor.tmLanguage.json',
  'source.reg': 'https://unpkg.com/shiki@^0.14.5/languages/reg.tmLanguage.json',
  'source.rel': 'https://unpkg.com/shiki@^0.14.5/languages/rel.tmLanguage.json',
  'source.riscv': 'https://unpkg.com/shiki@^0.14.5/languages/riscv.tmLanguage.json',
  'source.rst': 'https://unpkg.com/shiki@^0.14.5/languages/rst.tmLanguage.json',
  'source.ruby': 'https://unpkg.com/shiki@^0.14.5/languages/ruby.tmLanguage.json',
  'source.rust': 'https://unpkg.com/shiki@^0.14.5/languages/rust.tmLanguage.json',
  'source.sas': 'https://unpkg.com/shiki@^0.14.5/languages/sas.tmLanguage.json',
  'source.sass': 'https://unpkg.com/shiki@^0.14.5/languages/sass.tmLanguage.json',
  'source.scala': 'https://unpkg.com/shiki@^0.14.5/languages/scala.tmLanguage.json',
  'source.scheme': 'https://unpkg.com/shiki@^0.14.5/languages/scheme.tmLanguage.json',
  'source.css.scss': 'https://unpkg.com/shiki@^0.14.5/languages/scss.tmLanguage.json',
  'source.shaderlab': 'https://unpkg.com/shiki@^0.14.5/languages/shaderlab.tmLanguage.json',
  'source.shell': 'https://unpkg.com/shiki@^0.14.5/languages/shellscript.tmLanguage.json',
  'text.shell-session': 'https://unpkg.com/shiki@^0.14.5/languages/shellsession.tmLanguage.json',
  'source.smalltalk': 'https://unpkg.com/shiki@^0.14.5/languages/smalltalk.tmLanguage.json',
  'source.solidity': 'https://unpkg.com/shiki@^0.14.5/languages/solidity.tmLanguage.json',
  'source.sparql': 'https://unpkg.com/shiki@^0.14.5/languages/sparql.tmLanguage.json',
  'source.splunk_search': 'https://unpkg.com/shiki@^0.14.5/languages/splunk.tmLanguage.json',
  'source.sql': 'https://unpkg.com/shiki@^0.14.5/languages/sql.tmLanguage.json',
  'source.ssh-config': 'https://unpkg.com/shiki@^0.14.5/languages/ssh-config.tmLanguage.json',
  'source.stata': 'https://unpkg.com/shiki@^0.14.5/languages/stata.tmLanguage.json',
  'source.stylus': 'https://unpkg.com/shiki@^0.14.5/languages/stylus.tmLanguage.json',
  'source.svelte': 'https://unpkg.com/shiki@^0.14.5/languages/svelte.tmLanguage.json',
  'source.swift': 'https://unpkg.com/shiki@^0.14.5/languages/swift.tmLanguage.json',
  'source.systemverilog': 'https://unpkg.com/shiki@^0.14.5/languages/system-verilog.tmLanguage.json',
  'source.tasl': 'https://unpkg.com/shiki@^0.14.5/languages/tasl.tmLanguage.json',
  'source.tcl': 'https://unpkg.com/shiki@^0.14.5/languages/tcl.tmLanguage.json',
  'text.tex': 'https://unpkg.com/shiki@^0.14.5/languages/tex.tmLanguage.json',
  'source.toml': 'https://unpkg.com/shiki@^0.14.5/languages/toml.tmLanguage.json',
  'source.tsx': 'https://unpkg.com/shiki@^0.14.5/languages/tsx.tmLanguage.json',
  'source.turtle': 'https://unpkg.com/shiki@^0.14.5/languages/turtle.tmLanguage.json',
  'text.html.twig': 'https://unpkg.com/shiki@^0.14.5/languages/twig.tmLanguage.json',
  'source.ts': 'https://unpkg.com/shiki@^0.14.5/languages/typescript.tmLanguage.json',
  'source.v': 'https://unpkg.com/shiki@^0.14.5/languages/v.tmLanguage.json',
  'source.asp.vb.net': 'https://unpkg.com/shiki@^0.14.5/languages/vb.tmLanguage.json',
  'source.verilog': 'https://unpkg.com/shiki@^0.14.5/languages/verilog.tmLanguage.json',
  'source.vhdl': 'https://unpkg.com/shiki@^0.14.5/languages/vhdl.tmLanguage.json',
  'source.viml': 'https://unpkg.com/shiki@^0.14.5/languages/viml.tmLanguage.json',
  'text.html.vue-html': 'https://unpkg.com/shiki@^0.14.5/languages/vue-html.tmLanguage.json',
  'source.vue': 'https://unpkg.com/shiki@^0.14.5/languages/vue.tmLanguage.json',
  'source.vyper': 'https://unpkg.com/shiki@^0.14.5/languages/vyper.tmLanguage.json',
  'source.wat': 'https://unpkg.com/shiki@^0.14.5/languages/wasm.tmLanguage.json',
  'source.wenyan': 'https://unpkg.com/shiki@^0.14.5/languages/wenyan.tmLanguage.json',
  'source.wgsl': 'https://unpkg.com/shiki@^0.14.5/languages/wgsl.tmLanguage.json',
  'source.wolfram': 'https://unpkg.com/shiki@^0.14.5/languages/wolfram.tmLanguage.json',
  'text.xml': 'https://unpkg.com/shiki@^0.14.5/languages/xml.tmLanguage.json',
  'text.xml.xsl': 'https://unpkg.com/shiki@^0.14.5/languages/xsl.tmLanguage.json',
  'source.yaml': 'https://unpkg.com/shiki@^0.14.5/languages/yaml.tmLanguage.json',
  'source.zenscript': 'https://unpkg.com/shiki@^0.14.5/languages/zenscript.tmLanguage.json',
  'source.zig': 'https://unpkg.com/shiki@^0.14.5/languages/zig.tmLanguage.json'
};

const THEMES = {
  'css-variables': 'https://unpkg.com/shiki@^0.14.5/themes/css-variables.json',
  'dark-plus': 'https://unpkg.com/shiki@^0.14.5/themes/dark-plus.json',
  'dracula-soft': 'https://unpkg.com/shiki@^0.14.5/themes/dracula-soft.json',
  'dracula': 'https://unpkg.com/shiki@^0.14.5/themes/dracula.json',
  'github-dark-dimmed': 'https://unpkg.com/shiki@^0.14.5/themes/github-dark-dimmed.json',
  'github-dark': 'https://unpkg.com/shiki@^0.14.5/themes/github-dark.json',
  'github-light': 'https://unpkg.com/shiki@^0.14.5/themes/github-light.json',
  'hc_light': 'https://unpkg.com/shiki@^0.14.5/themes/hc_light.json',
  'light-plus': 'https://unpkg.com/shiki@^0.14.5/themes/light-plus.json',
  'material-theme-darker': 'https://unpkg.com/shiki@^0.14.5/themes/material-theme-darker.json',
  'material-theme-lighter': 'https://unpkg.com/shiki@^0.14.5/themes/material-theme-lighter.json',
  'material-theme-ocean': 'https://unpkg.com/shiki@^0.14.5/themes/material-theme-ocean.json',
  'material-theme-palenight': 'https://unpkg.com/shiki@^0.14.5/themes/material-theme-palenight.json',
  'material-theme': 'https://unpkg.com/shiki@^0.14.5/themes/material-theme.json',
  'min-dark': 'https://unpkg.com/shiki@^0.14.5/themes/min-dark.json',
  'min-light': 'https://unpkg.com/shiki@^0.14.5/themes/min-light.json',
  'monokai': 'https://unpkg.com/shiki@^0.14.5/themes/monokai.json',
  'nord': 'https://unpkg.com/shiki@^0.14.5/themes/nord.json',
  'one-dark-pro': 'https://unpkg.com/shiki@^0.14.5/themes/one-dark-pro.json',
  'poimandres': 'https://unpkg.com/shiki@^0.14.5/themes/poimandres.json',
  'rose-pine-dawn': 'https://unpkg.com/shiki@^0.14.5/themes/rose-pine-dawn.json',
  'rose-pine-moon': 'https://unpkg.com/shiki@^0.14.5/themes/rose-pine-moon.json',
  'rose-pine': 'https://unpkg.com/shiki@^0.14.5/themes/rose-pine.json',
  'slack-dark': 'https://unpkg.com/shiki@^0.14.5/themes/slack-dark.json',
  'slack-ochin': 'https://unpkg.com/shiki@^0.14.5/themes/slack-ochin.json',
  'solarized-dark': 'https://unpkg.com/shiki@^0.14.5/themes/solarized-dark.json',
  'solarized-light': 'https://unpkg.com/shiki@^0.14.5/themes/solarized-light.json',
  'vitesse-dark': 'https://unpkg.com/shiki@^0.14.5/themes/vitesse-dark.json',
  'vitesse-light': 'https://unpkg.com/shiki@^0.14.5/themes/vitesse-light.json'
};

// Now let's instantiate the highlighter

const highlighter = new Highlighter ({
  getGrammar: grammar => {
    console.log ( 'Loading grammar:', grammar );
    return GRAMMARS[grammar];
  },
  getTheme: theme => {
    console.log ( 'Loading theme:', theme );
    return THEMES[theme];
  },
  getOniguruma: () => {
    return ONIGURUMA;
  }
});

// Rendering some code to HTML

const html = await highlighter.highlightToHTML ({
  code: 'const foo = "bar";',
  grammar: 'source.js',
  theme: 'github-dark'
});

// Rendering some code to DOM nodes directly (client-only)

const node = await highlighter.highlightToDOM ({
  code: 'const foo = "bar";',
  grammar: 'source.js',
  theme: 'github-dark'
});

// Rendering some code to ANSI, for the terminal

const ansi = await highlighter.highlightToANSI ({
  code: 'const foo = "bar";',
  grammar: 'source.js',
  theme: 'github-dark'
});

// Rendering some code to a single <pre> element containing a single Text node (client-only)

const [node, dispose] = await highlighter.highlightToHighlights ({
  code: 'const foo = "bar";',
  grammar: 'source.js',
  theme: 'github-dark'
});

dispose (); // The dispose function cleans up all the CSS Custom Highlights, allowing the nodes to be garbage collected

// Doing low-level tokenization

const lines = [
  'function sum ( a, b ) {',
  '  return a + b;',
  '}'
];

const abortController = new AbortController ();
const abortSignal = abortController.signal;

highlighter.tokenize ( lines, 'source.js', 'github-dark', abortSignal, ( lineTokens, lineIndex ) => {
  console.log ( 'Line tokens:', lineTokens );
  console.log ( 'Line index:', lineIndex );
});

License

MIT © Fabio Spampinato