sveltejs/language-tools

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The Svelte Language Server, and official extensions which use it

Stars: 1.4k
Forks: 252
Open beginner issues: 1
Indexed issues: 254
Avg merge: 8d 13h
Merged PRs (30d): 2

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted good first issue

Beginner friendly Everything

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254 open issues indexed

Using `svelte-check` with `--tsgo` includes more files Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 65/100

sveltejs/language-tools#3120 · Opened Sep 11, 2026
`@sveltejs/vite-plugin-svelte` does not recognize `vite-plus` configuration exports Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 76/100

sveltejs/language-tools#3118 · Opened Sep 7, 2026
Script module makes the file looks like there is an error Open

awaiting submitter bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

sveltejs/language-tools#3109 · 1 comment · Opened Aug 19, 2026
LSP crashes/partially stops working when I move, create, or delete route files. (SvelteKit 3 RC) Open

bug upstream

Difficulty 4/5 3-5 days Newbie friendliness 52/100

sveltejs/language-tools#3108 · 1 comment · Opened Aug 19, 2026
Svelte-check reports valid CSS properties such as corner-shape as unknown Open

bug upstream

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

sveltejs/language-tools#3099 · Opened Aug 10, 2026
svelte-check --tsgo-experimental-api crashes immediately: "Cannot run with tsconfig path without LS/TSdoc resolver" (CI/Linux/arm64 only, not repro'd on macOS) Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

sveltejs/language-tools#3095 · 9 comments · Opened Aug 6, 2026
bump required node version, drop dependencies Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

sveltejs/language-tools#3092 · Opened Aug 4, 2026
`svelte-check`: Doesn't flag TS2614 about exporting snippets from .svelte files, but TypeScript does Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

sveltejs/language-tools#3083 · 4 comments · Opened Jul 23, 2026
Reading svelte config from vite.config.js/ts files introduced in 4.6.0 seems flawed Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#3080 · 5 reactions · Opened Jul 17, 2026
Typescript 7 crashes svelte2tsx and svelte-check Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

sveltejs/language-tools#3063 · 10 comments · 22 reactions · Opened Jun 18, 2026
`svelte-check --incremental` breaks zero-effort type safety Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

sveltejs/language-tools#3061 · Opened Jun 18, 2026
Type import with same name as variable causes migration error Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

sveltejs/language-tools#3035 · 4 comments · Opened May 27, 2026
svelte-check --tsgo --incremental tsconfig.json "references" inconsistency Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

sveltejs/language-tools#3027 · 1 comment · Opened May 12, 2026
Add --cache-location for --incremental mode Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

sveltejs/language-tools#3012 · 2 comments · Opened Apr 29, 2026
Svelte maintained `tree-sitter` grammar Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

sveltejs/language-tools#2997 · 2 comments · 24 reactions · Opened Mar 31, 2026
svelte-check --incremental / --tsgo silently drops all diagnostics when a .svelte file has an HTML comment containing JSDoc Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

sveltejs/language-tools#2995 · 1 comment · Opened Mar 29, 2026
Honor TypeScript's `useUnknownInCatchVariables` setting Open

breaking change

Difficulty 4/5 3-5 days Newbie friendliness 40/100

sveltejs/language-tools#2983 · 1 reaction · Opened Mar 20, 2026
Monorepo support for Find File Reference Open

typescript-ls pending

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sveltejs/language-tools#2975 · 1 comment · Opened Mar 11, 2026
False positives for legacy syntax reactive comma-separated statement Open

Blocked bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

sveltejs/language-tools#2973 · 1 comment · Opened Mar 9, 2026
[svelte-check] Running svelte-check through docker yields docker-absolute paths Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

sveltejs/language-tools#2938 · 4 comments · Opened Feb 14, 2026
$lib imports not working in svelte files in a symlinked project folder Open

bug typescript-ls pending upstream

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sveltejs/language-tools#2930 · 5 comments · Opened Feb 3, 2026
Functions and Mixins module treated as unknown at rules Open

bug upstream

Difficulty 3/5 1-2 days Newbie friendliness 38/100

sveltejs/language-tools#2913 · 1 comment · Opened Dec 30, 2025
Feature Request: Enhanced IDE Support for Identifying Bindable Props in Svelte5 Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

sveltejs/language-tools#2911 · 2 comments · Opened Dec 24, 2025
VSCode can't find references when using JSDoc Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2910 · 3 comments · Opened Dec 23, 2025
Tooltip for properties Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

sveltejs/language-tools#2908 · 3 comments · Opened Dec 17, 2025
Extension 'Svelte for VS Code' is configured as formatter but it cannot format 'Svelte'-files Open

awaiting submitter bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

sveltejs/language-tools#2906 · 6 comments · Opened Dec 16, 2025
Bump `chokidar` to v5 Open

breaking change

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

sveltejs/language-tools#2894 · 5 comments · 9 reactions · Opened Nov 27, 2025
`*.svelte.(ts|js)` files are not checked for Svelte compiler warnings (svelte-check / language tools) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2891 · 2 comments · 1 reaction · Opened Nov 20, 2025
Antigravity Svelte Extension Compatibility Open

upstream

Difficulty 3/5 1-2 days Newbie friendliness 42/100

sveltejs/language-tools#2890 · 22 comments · 15 reactions · Opened Nov 19, 2025
Type error when `#snippet` imported from other component's `<script module>` Open

awaiting submitter bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2889 · 3 comments · 1 reaction · Opened Nov 16, 2025
Duplicate auto-import suggestions for re-exported .svelte components Open

bug typescript-ls pending

Difficulty 4/5 3-5 days Newbie friendliness 52/100

sveltejs/language-tools#2888 · 1 comment · 2 reactions · Opened Nov 13, 2025
Svelte 5 events lack syntax highlight Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

sveltejs/language-tools#2881 · 2 comments · Opened Nov 6, 2025
VSCode shows errors when importing a .svelte file from a .ts file Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

sveltejs/language-tools#2874 · 5 comments · Opened Oct 25, 2025
Warning on typos in svelte specific files Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sveltejs/language-tools#2872 · Opened Oct 23, 2025
Expandable hovers for Typescript in VSCode Open

feature request typescript-ls pending

Difficulty 4/5 3-5 days Newbie friendliness 48/100

sveltejs/language-tools#2860 · 2 comments · 1 reaction · Opened Oct 5, 2025
TS type issue when combining script module, generics and snippets Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2917 · 3 comments · 1 reaction · Opened Oct 1, 2025
Wrong textEdit position in import statement completion Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2850 · 6 comments · Opened Sep 16, 2025
Show svelte blocks in top breadcrumbs Open

feature request

Difficulty 3/5 1-2 days Newbie friendliness 40/100

sveltejs/language-tools#2849 · 2 comments · 1 reaction · Opened Sep 13, 2025
svelte-check overrides vite mode to production for dev-server Open

question upstream

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2840 · 2 comments · Opened Sep 9, 2025
Bug: Refactoring "Rename Symbol" (F2) in a `.ts` file corrupts Svelte components code that uses the renamed type** Open

bug limitation typescript-ls pending

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2839 · 4 comments · Opened Sep 6, 2025
"Modifiers cannot appear here" in unrelated `export type` when props don't have explicit type Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

sveltejs/language-tools#2832 · 5 comments · Opened Aug 17, 2025
Error When Using CSS Container Scroll-State Queries in `style` element Open

Blocked bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

sveltejs/language-tools#2833 · 8 comments · Opened Aug 16, 2025
Svelte-check tool outputs wrong line number in machine-verbose mode Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

sveltejs/language-tools#2830 · 1 comment · Opened Aug 15, 2025
Each blocks without `as` clause highlight incorrectly Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

sveltejs/language-tools#2829 · Opened Aug 14, 2025
Error: Object literal may only specify known properties, and '"..."' does not exist in type 'SvelteWindowAttributes'. (ts) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sveltejs/language-tools#2828 · 2 comments · Opened Aug 14, 2025
The CSS type function in new attr function syntax is not recognized Open

upstream

Difficulty 3/5 1-2 days Newbie friendliness 45/100

sveltejs/language-tools#2827 · 1 comment · 1 reaction · Opened Aug 14, 2025
Extension fails to load 'tsconfig.json' with 'references' option. Open

typescript-ls pending upstream

Difficulty 4/5 3-5 days Newbie friendliness 45/100

sveltejs/language-tools#2819 · 5 comments · Opened Aug 9, 2025
Feature Request: Treat $derived.by runes as if their functions are called immediately to avoid runtime errors in SSR Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

sveltejs/language-tools#2818 · 3 comments · Opened Aug 8, 2025
Global type scope polution in VS Code Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sveltejs/language-tools#2800 · 1 comment · Opened Jul 17, 2025
bug: (neovim) crash when opening "virtual files" Open

contributions welcome feature request

Difficulty 3/5 1-2 days Newbie friendliness 38/100

sveltejs/language-tools#2777 · 4 comments · Opened Jun 8, 2025

sveltejs/language-tools

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