JavaScript RegExp Engine Compatibility References

Compatibility reference of all built-in grammars with the JavaScript RegExp engine.

Genreated on Friday, November 15, 2024

Version 1.23.0

Runtime: Node.js v20.18.0

Report Summary

	Count
Total Languages	214
Supported	178
Mismatched	18
Unsupported	18

Supported Languages

Languages that work with the JavaScript RegExp engine, and will produce the same result as the WASM engine (with the sample snippets in the registry). In some edge cases, it's not guaranteed that the the highlighting will be 100% the same. If that happens, please create an issue with the sample snippet.

Language	Highlight Match	Patterns Parsable	Patterns Failed	Diff
abap	✅ OK	51	-
actionscript-3	✅ OK	57	-
angular-html	✅ OK	670	-
angular-ts	✅ OK	779	-
apache	✅ OK	60	-
apl	✅ OK	917	-
applescript	✅ OK	152	-
ara	✅ OK	54	-
asciidoc	✅ OK	262	-
asm	✅ OK	297	-
astro	✅ OK	613	-
awk	✅ OK	36	-
ballerina	✅ OK	230	-
bat	✅ OK	58	-
berry	✅ OK	18	-
bibtex	✅ OK	19	-
bicep	✅ OK	27	-
cadence	✅ OK	71	-
clarity	✅ OK	43	-
clj	✅ OK	38	-
clojure	✅ OK	38	-
cmake	✅ OK	23	-
cobol	✅ OK	864	-
codeowners	✅ OK	4	-
codeql	✅ OK	151	-
coffee	✅ OK	469	-
common-lisp	✅ OK	60	-
coq	✅ OK	25	-
css	✅ OK	141	-
csv	✅ OK	1	-
cue	✅ OK	85	-
cypher	✅ OK	39	-
d	✅ OK	270	-
dart	✅ OK	72	-
dax	✅ OK	23	-
desktop	✅ OK	16	-
diff	✅ OK	16	-
docker	✅ OK	7	-
dotenv	✅ OK	9	-
dream-maker	✅ OK	56	-
edge	✅ OK	632	-
elm	✅ OK	244	-
emacs-lisp	✅ OK	153	-	22
erb	✅ OK	1312	-
fennel	✅ OK	31	-
fish	✅ OK	25	-
fluent	✅ OK	23	-
fortran-fixed-form	✅ OK	332	-
fortran-free-form	✅ OK	328	-
fsl	✅ OK	30	-
gdresource	✅ OK	157	-
gdscript	✅ OK	93	-
gdshader	✅ OK	39	-
genie	✅ OK	20	-
gherkin	✅ OK	19	-
gleam	✅ OK	26	-
glimmer-js	✅ OK	676	-
glimmer-ts	✅ OK	676	-
gnuplot	✅ OK	82	-
go	✅ OK	123	-
graphql	✅ OK	448	-
groovy	✅ OK	133	-
haml	✅ OK	562	-
handlebars	✅ OK	699	-
haxe	✅ OK	174	-
hcl	✅ OK	67	-
hjson	✅ OK	57	-
hlsl	✅ OK	52	-
html	✅ OK	611	-
http	✅ OK	753	-
hxml	✅ OK	182	-
hy	✅ OK	12	-
imba	✅ OK	516	-
ini	✅ OK	11	-
java	✅ OK	142	-
javascript	✅ OK	376	-
jinja	✅ OK	642	-
jison	✅ OK	421	-
json	✅ OK	19	-
json5	✅ OK	23	-
jsonc	✅ OK	19	-
jsonl	✅ OK	19	-
jsonnet	✅ OK	33	-
jssm	✅ OK	30	-
jsx	✅ OK	376	-
latex	✅ OK	283	-
lean	✅ OK	32	-
less	✅ OK	280	-
liquid	✅ OK	684	-
log	✅ OK	30	-
logo	✅ OK	9	-
lua	✅ OK	278	-
luau	✅ OK	88	-
make	✅ OK	51	-
marko	✅ OK	926	-
matlab	✅ OK	88	-
mipsasm	✅ OK	17	-
mojo	✅ OK	213	-
move	✅ OK	120	-
narrat	✅ OK	34	-
nextflow	✅ OK	17	-
nginx	✅ OK	378	-
nix	✅ OK	80	-
nushell	✅ OK	81	-
objective-c	✅ OK	223	-
ocaml	✅ OK	178	-
pascal	✅ OK	23	-
perl	✅ OK	941	-
plsql	✅ OK	45	-
postcss	✅ OK	49	-
powerquery	✅ OK	30	-
powershell	✅ OK	88	-
prisma	✅ OK	26	-
prolog	✅ OK	26	-
proto	✅ OK	33	-
puppet	✅ OK	61	-
python	✅ OK	218	-
qml	✅ OK	408	-
qmldir	✅ OK	7	-
qss	✅ OK	31	-
r	✅ OK	71	-
racket	✅ OK	69	-
raku	✅ OK	52	-
reg	✅ OK	9	-
regexp	✅ OK	34	-
rel	✅ OK	17	-
riscv	✅ OK	36	-
rust	✅ OK	89	-
sas	✅ OK	101	-
sass	✅ OK	69	-
scala	✅ OK	117	-
scheme	✅ OK	34	-
scss	✅ OK	234	-
shaderlab	✅ OK	87	-
shellsession	✅ OK	150	-
solidity	✅ OK	102	-
soy	✅ OK	649	-
sparql	✅ OK	19	-
splunk	✅ OK	17	-
sql	✅ OK	67	-
ssh-config	✅ OK	12	-
stata	✅ OK	253	-
stylus	✅ OK	107	-
svelte	✅ OK	636	-
system-verilog	✅ OK	102	-
systemd	✅ OK	32	-
tasl	✅ OK	23	-
tcl	✅ OK	34	-
templ	✅ OK	673	-
terraform	✅ OK	68	-
tex	✅ OK	106	-
toml	✅ OK	44	-
ts-tags	✅ OK	997	-
tsv	✅ OK	1	-
tsx	✅ OK	376	-
turtle	✅ OK	15	-
twig	✅ OK	1984	-
typescript	✅ OK	363	-
typespec	✅ OK	80	-
typst	✅ OK	78	-
v	✅ OK	80	-
vala	✅ OK	20	-
vb	✅ OK	34	-
verilog	✅ OK	33	-
vhdl	✅ OK	82	-
viml	✅ OK	72	-
vue	✅ OK	692	-
vue-html	✅ OK	716	-
vyper	✅ OK	238	-
wasm	✅ OK	78	-
wenyan	✅ OK	18	-
wgsl	✅ OK	44	-
wikitext	✅ OK	104	-
xml	✅ OK	169	-
xsl	✅ OK	171	-
yaml	✅ OK	48	-
zenscript	✅ OK	21	-
zig	✅ OK	51	-

Table Field Explanations

• Highlight Match: Whether the highlighting results matched with the WASM engine for the sample snippet.
• Patterns Parsable: Number of regex patterns that can be parsed by the JavaScript RegExp engine.
• Patterns Failed: Number of regex patterns that can't be parsed by the JavaScript RegExp engine (throws error).
• Diff: Length of characters that are different between the highlighting results of the two engines.

Mismatched Languages

Languages that do not throw with the JavaScript RegExp engine, but will produce different results than the WASM engine. Please use with caution.

Language	Highlight Match	Patterns Parsable	Patterns Failed	Diff
bash	🚧 Mismatch	148	-	56
beancount	🚧 Mismatch	39	-	171
c	🚧 Mismatch	177	-	209
crystal	🚧 Mismatch	1067	-	40
elixir	🚧 Mismatch	708	-	179
erlang	🚧 Mismatch	147	-	470
glsl	🚧 Mismatch	186	-	306
kotlin	🚧 Mismatch	58	-	1953
kusto	🚧 Mismatch	60	-	40
mermaid	🚧 Mismatch	129	-	38
objective-cpp	🚧 Mismatch	309	-	172
php	🚧 Mismatch	1131	-	605
po	🚧 Mismatch	23	-	423
pug	🚧 Mismatch	686	-	164
ruby	🚧 Mismatch	1307	-	1
shellscript	🚧 Mismatch	148	-	56
smalltalk	🚧 Mismatch	35	-	40
zsh	🚧 Mismatch	148	-	117

Unsupported Languages

Languages that throw with the JavaScript RegExp engine, either because they contain syntax we can't polyfill yet or because the grammar contains an invalid Oniguruma regex (that would also fail when using the WASM engine, but silently). You can try these languages with the forgiving option to skip errors, but usually it's best to use the Oniguruma engine instead.

Language	Highlight Match	Patterns Parsable	Patterns Failed	Diff
ada	✅ OK	201	1
blade	✅ OK	1125	1
fsharp	✅ OK	234	5
nim	✅ OK	1121	5
julia	✅ OK	1147	21
rst	🚧 Mismatch	1836	21	62
hack	❌ Error	947	1	114
haskell	❌ Error	156	1	143
wolfram	❌ Error	500	1	12
purescript	❌ Error	71	2	36
swift	❌ Error	326	3	40
mdx	❌ Error	193	4
markdown	❌ Error	113	5	193
mdc	❌ Error	778	6	389
apex	❌ Error	175	12	269
cpp	❌ Error	491	21	25
csharp	❌ Error	281	28	207
razor	❌ Error	927	30	26