DuskMoon Highlight
DuskMoon-maintained Dart syntax highlighting for Flutter. The parser, 194 language grammars, aliases and light/dark token themes are maintained in this repository. No JavaScript engine or platform plugin is needed at runtime.
import 'package:duskmoon_highlight/duskmoon_highlight.dart';
import 'package:duskmoon_highlight/languages/all.dart';
final highlight = Highlight()..registerLanguages(builtinAllLanguages);
final result = highlight.highlight(code: 'final answer = 42;', language: 'dart');
final html = result.toHtml();
getLanguage accepts case-insensitive aliases. Guard an unknown identifier before
calling highlight to provide a plain-text fallback. After parsing, also fall
back when result.errorRaised != null or result.illegal: safe mode can retain
partial token output on a parser error. Use result.render with
HighlightRenderer to consume raw token text and scopes without HTML escaping.
TextSpanRenderer accepts a Flutter base TextStyle and token style map. Individual
grammars and themes remain available under languages/ and styles/.
Source and licenses
See SOURCE.md for the exact verified import and changes. LICENSE
contains the upstream MIT notice; THIRD_PARTY_LICENSES contains the retained
highlight.js and community grammar notices. THIRD_PARTY_NOTICES retains grammar
and theme attribution, including theme-specific MIT and CC BY-SA 4.0 notices.
The CC license text is in CC-BY-SA-4.0.txt. The checked-in grammar/style sources
retain their original attribution comments; inherited themes keep those licenses.
Regeneration
Run from the workspace root with the development environment available. Node 18+
and npm are required only for maintenance. npm ci uses the checked-in lockfile;
the HighlightJS helper runtime is pinned to 11.9.0. Grammar definitions and CSS
styles are read from this package's vendor/highlight.js/src, with Vue/GN source
under their adjacent vendor directories. Edit those inputs rather than generated
Dart grammars or themes.
npm ci --prefix packages/duskmoon_highlight/tool --ignore-scripts --no-audit --no-fund
DART="$PWD/.devenv/profile/bin/dart" npm run generate --prefix packages/duskmoon_highlight/tool
The generator works independently of the current shell directory, renames imports
to this package and formats generated output. Running it twice with the same input
and Dart formatter must produce identical lib/ bytes. Keep the Node lockfile,
source grammars/styles and generated Dart changes together when updating inputs.
The upstream HighlightJS source version is recorded in vendor/highlight.js/package.json.
Validation
After workspace dependency resolution, run from the root:
devenv shell -- bash -c 'cd packages/duskmoon_highlight && flutter analyze --no-pub --fatal-infos'
devenv shell -- bash -c 'cd packages/duskmoon_highlight && flutter test --no-pub'
API/parser tests and the full original markup fixture suite are retained. Focused maintenance tests cover the owned registry and text-preservation contract.
Libraries
- duskmoon_highlight
- languages/lib/common
- languages/lib/javascript
- languages/lib/mathematica
- languages/lib/php
- languages/lib/typescript
- styles/a11y-dark
- styles/a11y-light
- styles/agate
- styles/all
- styles/an-old-hope
- styles/androidstudio
- styles/arduino-light
- styles/arta
- styles/ascetic
- styles/atom-one-dark
- styles/atom-one-dark-reasonable
- styles/atom-one-light
- styles/base16/apathy
- styles/base16/apprentice
- styles/base16/ashes
- styles/base16/atelier-cave
- styles/base16/atelier-cave-light
- styles/base16/atelier-dune
- styles/base16/atelier-dune-light
- styles/base16/atelier-estuary
- styles/base16/atelier-estuary-light
- styles/base16/atelier-forest
- styles/base16/atelier-forest-light
- styles/base16/atelier-heath
- styles/base16/atelier-heath-light
- styles/base16/atelier-lakeside
- styles/base16/atelier-lakeside-light
- styles/base16/atelier-plateau
- styles/base16/atelier-plateau-light
- styles/base16/atelier-savanna
- styles/base16/atelier-savanna-light
- styles/base16/atelier-seaside
- styles/base16/atelier-seaside-light
- styles/base16/atelier-sulphurpool
- styles/base16/atelier-sulphurpool-light
- styles/base16/atlas
- styles/base16/bespin
- styles/base16/black-metal
- styles/base16/black-metal-bathory
- styles/base16/black-metal-burzum
- styles/base16/black-metal-dark-funeral
- styles/base16/black-metal-gorgoroth
- styles/base16/black-metal-immortal
- styles/base16/black-metal-khold
- styles/base16/black-metal-marduk
- styles/base16/black-metal-mayhem
- styles/base16/black-metal-nile
- styles/base16/black-metal-venom
- styles/base16/brewer
- styles/base16/bright
- styles/base16/brogrammer
- styles/base16/brush-trees
- styles/base16/brush-trees-dark
- styles/base16/chalk
- styles/base16/circus
- styles/base16/classic-dark
- styles/base16/classic-light
- styles/base16/codeschool
- styles/base16/colors
- styles/base16/cupcake
- styles/base16/cupertino
- styles/base16/danqing
- styles/base16/darcula
- styles/base16/dark-violet
- styles/base16/darkmoss
- styles/base16/darktooth
- styles/base16/decaf
- styles/base16/default-dark
- styles/base16/default-light
- styles/base16/dirtysea
- styles/base16/dracula
- styles/base16/edge-dark
- styles/base16/edge-light
- styles/base16/eighties
- styles/base16/embers
- styles/base16/equilibrium-dark
- styles/base16/equilibrium-gray-dark
- styles/base16/equilibrium-gray-light
- styles/base16/equilibrium-light
- styles/base16/espresso
- styles/base16/eva
- styles/base16/eva-dim
- styles/base16/flat
- styles/base16/framer
- styles/base16/fruit-soda
- styles/base16/gigavolt
- styles/base16/github
- styles/base16/google-dark
- styles/base16/google-light
- styles/base16/grayscale-dark
- styles/base16/grayscale-light
- styles/base16/green-screen
- styles/base16/gruvbox-dark-hard
- styles/base16/gruvbox-dark-medium
- styles/base16/gruvbox-dark-pale
- styles/base16/gruvbox-dark-soft
- styles/base16/gruvbox-light-hard
- styles/base16/gruvbox-light-medium
- styles/base16/gruvbox-light-soft
- styles/base16/hardcore
- styles/base16/harmonic16-dark
- styles/base16/harmonic16-light
- styles/base16/heetch-dark
- styles/base16/heetch-light
- styles/base16/helios
- styles/base16/hopscotch
- styles/base16/horizon-dark
- styles/base16/horizon-light
- styles/base16/humanoid-dark
- styles/base16/humanoid-light
- styles/base16/ia-dark
- styles/base16/ia-light
- styles/base16/icy-dark
- styles/base16/ir-black
- styles/base16/isotope
- styles/base16/kimber
- styles/base16/london-tube
- styles/base16/macintosh
- styles/base16/marrakesh
- styles/base16/materia
- styles/base16/material
- styles/base16/material-darker
- styles/base16/material-lighter
- styles/base16/material-palenight
- styles/base16/material-vivid
- styles/base16/mellow-purple
- styles/base16/mexico-light
- styles/base16/mocha
- styles/base16/monokai
- styles/base16/nebula
- styles/base16/nord
- styles/base16/nova
- styles/base16/ocean
- styles/base16/oceanicnext
- styles/base16/one-light
- styles/base16/onedark
- styles/base16/outrun-dark
- styles/base16/papercolor-dark
- styles/base16/papercolor-light
- styles/base16/paraiso
- styles/base16/pasque
- styles/base16/phd
- styles/base16/pico
- styles/base16/pop
- styles/base16/porple
- styles/base16/qualia
- styles/base16/railscasts
- styles/base16/rebecca
- styles/base16/ros-pine
- styles/base16/ros-pine-dawn
- styles/base16/ros-pine-moon
- styles/base16/sagelight
- styles/base16/sandcastle
- styles/base16/seti-ui
- styles/base16/shapeshifter
- styles/base16/silk-dark
- styles/base16/silk-light
- styles/base16/snazzy
- styles/base16/solar-flare
- styles/base16/solar-flare-light
- styles/base16/solarized-dark
- styles/base16/solarized-light
- styles/base16/spacemacs
- styles/base16/summercamp
- styles/base16/summerfruit-dark
- styles/base16/summerfruit-light
- styles/base16/synth-midnight-terminal-dark
- styles/base16/synth-midnight-terminal-light
- styles/base16/tango
- styles/base16/tender
- styles/base16/tomorrow
- styles/base16/tomorrow-night
- styles/base16/twilight
- styles/base16/unikitty-dark
- styles/base16/unikitty-light
- styles/base16/vulcan
- styles/base16/windows-10
- styles/base16/windows-10-light
- styles/base16/windows-95
- styles/base16/windows-95-light
- styles/base16/windows-high-contrast
- styles/base16/windows-high-contrast-light
- styles/base16/windows-nt
- styles/base16/windows-nt-light
- styles/base16/woodland
- styles/base16/xcode-dusk
- styles/base16/zenburn
- styles/brown-paper
- styles/codepen-embed
- styles/color-brewer
- styles/dark
- styles/default
- styles/devibeans
- styles/docco
- styles/far
- styles/felipec
- styles/foundation
- styles/github
- styles/github-dark
- styles/github-dark-dimmed
- styles/gml
- styles/googlecode
- styles/gradient-dark
- styles/gradient-light
- styles/grayscale
- styles/hybrid
- styles/idea
- styles/intellij-light
- styles/ir-black
- styles/isbl-editor-dark
- styles/isbl-editor-light
- styles/kimbie-dark
- styles/kimbie-light
- styles/lightfair
- styles/lioshi
- styles/magula
- styles/mono-blue
- styles/monokai
- styles/monokai-sublime
- styles/night-owl
- styles/nnfx-dark
- styles/nnfx-light
- styles/nord
- styles/obsidian
- styles/panda-syntax-dark
- styles/panda-syntax-light
- styles/paraiso-dark
- styles/paraiso-light
- styles/pojoaque
- styles/purebasic
- styles/qtcreator-dark
- styles/qtcreator-light
- styles/rainbow
- styles/routeros
- styles/school-book
- styles/shades-of-purple
- styles/srcery
- styles/stackoverflow-dark
- styles/stackoverflow-light
- styles/sunburst
- styles/tokyo-night-dark
- styles/tokyo-night-light
- styles/tomorrow-night-blue
- styles/tomorrow-night-bright
- styles/vs
- styles/vs2015
- styles/xcode
- styles/xt256