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fix: align default tsconfig "include" logic with tsc/tsserver - #3110

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#3108

Two fixes in this PR. One is to align the default tsconfig "include" logic with tsc/tsserver. While debugging #3108, I found that TypeScript actually excludes "dot folders" and node_modules from the **/* pattern. The problem that triggers the "large amount of files" warning is mainly our project files update logic.

The other fix is about the reduced mode; the problem is that we don't return any files in getScriptFileNames. Thus, the language service throws an error if any features were requested with the file.

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changeset-bot Bot commented Aug 21, 2026 •

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πŸ¦‹ Changeset detected

Latest commit: 435be93

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages
Name Type
svelte-language-server Patch
svelte-check Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

@jasonlyu123
jasonlyu123 merged commit 1c4834b into master Sep 21, 2026
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@jasonlyu123
jasonlyu123 deleted the undefined-include branch September 21, 2026 01:16
@github-actions github-actions Bot mentioned this pull request Sep 21, 2026
renovate Bot added a commit to gwennlbh/svelte-mathml that referenced this pull request Oct 23, 2026
##### [v4.7.7](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.7)

##### Patch Changes

- fix: recognise modern CSS properties such as corner-shape by updating vscode-css-languageservice ([#3122](sveltejs/language-tools#3122))

- fix: recognise the real `<script>` and `<style>` start tags when a matching token also appears inside the other tag ([#3079](sveltejs/language-tools#3079))

- fix: resolve symlinked packages when importing their `.svelte` files, so their types are not duplicated ([#3119](sveltejs/language-tools#3119))

- fix: align default tsconfig "include" logic with tsc/tsserver ([#3110](sveltejs/language-tools#3110))

- fix: report a failed TypeScript compiler process and exit non-zero when a run fails ([#3133](sveltejs/language-tools#3133))

- fix: ignore the `.svelte-check` cache directory in `--watch` with `--tsgo` / `--incremental` ([#3128](sveltejs/language-tools#3128))

- fix: check all files with `--tsgo` / `--incremental` when the tsconfig has no `include` ([#3138](sveltejs/language-tools#3138))

- fix: disallow `--tsgo` together with `--tsgo-experimental-api` ([#3128](sveltejs/language-tools#3128))

- fix: type elements from Svelte's `svelte-html.d.ts` with `--tsgo` / `--incremental`, like the language server ([#3141](sveltejs/language-tools#3141))
##### [v4.7.6](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.6)

##### Patch Changes

- fix: don't log an error for vite configs without a Svelte plugin ([#3091](sveltejs/language-tools#3091))

- fix: handle SvelteKit 3 having its config merged at the top level ([#3104](sveltejs/language-tools#3104))
##### [v4.7.5](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.5)

##### Patch Changes

- fix: prevent silent error during start-up caused by unhandled promise ([#3096](sveltejs/language-tools#3096))

- Updated dependencies \[[`1df53d8`](sveltejs/language-tools@1df53d8)]:
  - [@sveltejs/load-config](https://github.com/sveltejs/load-config)@0.2.2
##### [v4.7.4](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.4)

##### Patch Changes

- fix: support TypeScript 7 Stable under npm alias ([#3073](sveltejs/language-tools#3073))
##### [v4.7.3](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.3)

##### Patch Changes

- feat: zero-config `+error.svelte` props ([#3076](sveltejs/language-tools#3076))
##### [v4.7.2](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.2)

##### Patch Changes

- fix: resolve tsgo bin path with package.json ([#3074](sveltejs/language-tools#3074))

- fix: report tsconfig errors in --tsgo-experimental-api ([#3070](sveltejs/language-tools#3070))
##### [v4.7.1](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.1)

##### Patch Changes

- fix: correctly parse --tsgo-experimental-api flag ([#3067](sveltejs/language-tools#3067))
##### [v4.7.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.0)

##### Minor Changes

- feat: add `--config` option ([#3066](sveltejs/language-tools#3066))

- feat: svelte-check tsgo support with experimental api ([#3036](sveltejs/language-tools#3036))

##### Patch Changes

- fix: load esm version of Vite ([#3065](sveltejs/language-tools#3065))

- fix: stop excluding workspaces under dot-prefixed ancestors ([#3037](sveltejs/language-tools#3037))

- Updated dependencies \[[`7a3464b`](sveltejs/language-tools@7a3464b), [`a2561fc`](sveltejs/language-tools@a2561fc)]:
  - [@sveltejs/load-config](https://github.com/sveltejs/load-config)@0.2.0
##### [v4.6.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.6.0)

##### Minor Changes

- feat: support reading Svelte config from `vite.config.js/ts` ([#3031](sveltejs/language-tools#3031))

##### Patch Changes

- Updated dependencies \[[`151cf45`](sveltejs/language-tools@151cf45)]:
  - [@sveltejs/load-config](https://github.com/sveltejs/load-config)@0.1.1
##### [v4.5.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.5.0)

##### Minor Changes

- feat: support Svelte 5 declaration tags ([#3033](sveltejs/language-tools#3033))

##### Patch Changes

- fix: properly handle props with the name `slot` inside Svelte 5 snippets ([#3030](sveltejs/language-tools#3030))

- feat: add support for svelte config ts/mts files ([#3009](sveltejs/language-tools#3009))
##### [v4.4.8](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.8)

##### Patch Changes

- feat: typescript 6.0 support ([#2985](sveltejs/language-tools#2985))
##### [v4.4.7](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.7)

##### Patch Changes

- fix: flush stdout/stderr before exit ([#3014](sveltejs/language-tools#3014))

- fix: report diagnostics in tsconfig.json ([#3005](sveltejs/language-tools#3005))
##### [v4.4.6](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.6)

##### Patch Changes

- fix: prevent config loading message in svelte-check --incremental ([#2974](sveltejs/language-tools#2974))

- fix: resolve svelte files with NodeNext in --incremental/tsgo ([#2990](sveltejs/language-tools#2990))

- perf: various optimization with ast walk ([#2969](sveltejs/language-tools#2969))

- fix: prevent error with escape sequence in attribute ([#2968](sveltejs/language-tools#2968))

- fix: typescript 6.0 compatibility ([#2988](sveltejs/language-tools#2988))
##### [v4.4.5](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.5)

##### Patch Changes

- fix: use Promise<Response> for async kit handler return types ([#2966](sveltejs/language-tools#2966))
##### [v4.4.4](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.4)

##### Patch Changes

- fix: more robust detection of `lang="ts"` attribute ([#2957](sveltejs/language-tools#2957))

- fix: pass filename to `warningFilter` ([#2959](sveltejs/language-tools#2959))

- fix: resolve svelte files under path alias in `--incremental/tsgo` mode ([#2955](sveltejs/language-tools#2955))
##### [v4.4.3](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.3)

##### Patch Changes

- fix: respect `@ts-ignore` etc comments within tags ([#2950](sveltejs/language-tools#2950))
##### [v4.4.2](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.2)

##### Patch Changes

- fix: resolve shims correctly in `--incremental/tsgo` mode ([`cd1ff2f`](sveltejs/language-tools@cd1ff2f))

- fix: include `references` in generated `tsconfig.json` in `--incremental/tsgo` mode ([`1990f74`](sveltejs/language-tools@1990f74))
##### [v4.4.1](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.1)

##### Patch Changes

- fix: handle relative imports reaching outside working directory when using `--incremental/--tsgo` flags ([#2942](sveltejs/language-tools#2942))

- fix: support SvelteKit zero types in svelte-check --incremental ([#2939](sveltejs/language-tools#2939))
##### [v4.4.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.0)

##### Minor Changes

- feat: provide `--incremental` and `--tsgo` flags ([#2932](sveltejs/language-tools#2932))

##### Patch Changes

- fix: ignore Unix domain sockets in file watcher to prevent crashes ([#2931](sveltejs/language-tools#2931))

- fix: properly use machine output by default for Claude Code ([`e9f58d2`](sveltejs/language-tools@e9f58d2))
##### [v4.3.6](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.3.6)

##### Patch Changes

- fix: don't hoist type/snippet referencing $store ([#2926](sveltejs/language-tools#2926))
renovate Bot added a commit to gwennlbh/svelte-mathml that referenced this pull request Nov 5, 2026
##### [v4.7.7](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.7)

##### Patch Changes

- fix: recognise modern CSS properties such as corner-shape by updating vscode-css-languageservice ([#3122](sveltejs/language-tools#3122))

- fix: recognise the real `<script>` and `<style>` start tags when a matching token also appears inside the other tag ([#3079](sveltejs/language-tools#3079))

- fix: resolve symlinked packages when importing their `.svelte` files, so their types are not duplicated ([#3119](sveltejs/language-tools#3119))

- fix: align default tsconfig "include" logic with tsc/tsserver ([#3110](sveltejs/language-tools#3110))

- fix: report a failed TypeScript compiler process and exit non-zero when a run fails ([#3133](sveltejs/language-tools#3133))

- fix: ignore the `.svelte-check` cache directory in `--watch` with `--tsgo` / `--incremental` ([#3128](sveltejs/language-tools#3128))

- fix: check all files with `--tsgo` / `--incremental` when the tsconfig has no `include` ([#3138](sveltejs/language-tools#3138))

- fix: disallow `--tsgo` together with `--tsgo-experimental-api` ([#3128](sveltejs/language-tools#3128))

- fix: type elements from Svelte's `svelte-html.d.ts` with `--tsgo` / `--incremental`, like the language server ([#3141](sveltejs/language-tools#3141))
##### [v4.7.6](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.6)

##### Patch Changes

- fix: don't log an error for vite configs without a Svelte plugin ([#3091](sveltejs/language-tools#3091))

- fix: handle SvelteKit 3 having its config merged at the top level ([#3104](sveltejs/language-tools#3104))
##### [v4.7.5](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.5)

##### Patch Changes

- fix: prevent silent error during start-up caused by unhandled promise ([#3096](sveltejs/language-tools#3096))

- Updated dependencies \[[`1df53d8`](sveltejs/language-tools@1df53d8)]:
  - [@sveltejs/load-config](https://github.com/sveltejs/load-config)@0.2.2
##### [v4.7.4](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.4)

##### Patch Changes

- fix: support TypeScript 7 Stable under npm alias ([#3073](sveltejs/language-tools#3073))
##### [v4.7.3](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.3)

##### Patch Changes

- feat: zero-config `+error.svelte` props ([#3076](sveltejs/language-tools#3076))
##### [v4.7.2](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.2)

##### Patch Changes

- fix: resolve tsgo bin path with package.json ([#3074](sveltejs/language-tools#3074))

- fix: report tsconfig errors in --tsgo-experimental-api ([#3070](sveltejs/language-tools#3070))
##### [v4.7.1](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.1)

##### Patch Changes

- fix: correctly parse --tsgo-experimental-api flag ([#3067](sveltejs/language-tools#3067))
##### [v4.7.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.7.0)

##### Minor Changes

- feat: add `--config` option ([#3066](sveltejs/language-tools#3066))

- feat: svelte-check tsgo support with experimental api ([#3036](sveltejs/language-tools#3036))

##### Patch Changes

- fix: load esm version of Vite ([#3065](sveltejs/language-tools#3065))

- fix: stop excluding workspaces under dot-prefixed ancestors ([#3037](sveltejs/language-tools#3037))

- Updated dependencies \[[`7a3464b`](sveltejs/language-tools@7a3464b), [`a2561fc`](sveltejs/language-tools@a2561fc)]:
  - [@sveltejs/load-config](https://github.com/sveltejs/load-config)@0.2.0
##### [v4.6.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.6.0)

##### Minor Changes

- feat: support reading Svelte config from `vite.config.js/ts` ([#3031](sveltejs/language-tools#3031))

##### Patch Changes

- Updated dependencies \[[`151cf45`](sveltejs/language-tools@151cf45)]:
  - [@sveltejs/load-config](https://github.com/sveltejs/load-config)@0.1.1
##### [v4.5.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.5.0)

##### Minor Changes

- feat: support Svelte 5 declaration tags ([#3033](sveltejs/language-tools#3033))

##### Patch Changes

- fix: properly handle props with the name `slot` inside Svelte 5 snippets ([#3030](sveltejs/language-tools#3030))

- feat: add support for svelte config ts/mts files ([#3009](sveltejs/language-tools#3009))
##### [v4.4.8](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.8)

##### Patch Changes

- feat: typescript 6.0 support ([#2985](sveltejs/language-tools#2985))
##### [v4.4.7](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.7)

##### Patch Changes

- fix: flush stdout/stderr before exit ([#3014](sveltejs/language-tools#3014))

- fix: report diagnostics in tsconfig.json ([#3005](sveltejs/language-tools#3005))
##### [v4.4.6](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.6)

##### Patch Changes

- fix: prevent config loading message in svelte-check --incremental ([#2974](sveltejs/language-tools#2974))

- fix: resolve svelte files with NodeNext in --incremental/tsgo ([#2990](sveltejs/language-tools#2990))

- perf: various optimization with ast walk ([#2969](sveltejs/language-tools#2969))

- fix: prevent error with escape sequence in attribute ([#2968](sveltejs/language-tools#2968))

- fix: typescript 6.0 compatibility ([#2988](sveltejs/language-tools#2988))
##### [v4.4.5](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.5)

##### Patch Changes

- fix: use Promise<Response> for async kit handler return types ([#2966](sveltejs/language-tools#2966))
##### [v4.4.4](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.4)

##### Patch Changes

- fix: more robust detection of `lang="ts"` attribute ([#2957](sveltejs/language-tools#2957))

- fix: pass filename to `warningFilter` ([#2959](sveltejs/language-tools#2959))

- fix: resolve svelte files under path alias in `--incremental/tsgo` mode ([#2955](sveltejs/language-tools#2955))
##### [v4.4.3](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.3)

##### Patch Changes

- fix: respect `@ts-ignore` etc comments within tags ([#2950](sveltejs/language-tools#2950))
##### [v4.4.2](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.2)

##### Patch Changes

- fix: resolve shims correctly in `--incremental/tsgo` mode ([`cd1ff2f`](sveltejs/language-tools@cd1ff2f))

- fix: include `references` in generated `tsconfig.json` in `--incremental/tsgo` mode ([`1990f74`](sveltejs/language-tools@1990f74))
##### [v4.4.1](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.1)

##### Patch Changes

- fix: handle relative imports reaching outside working directory when using `--incremental/--tsgo` flags ([#2942](sveltejs/language-tools#2942))

- fix: support SvelteKit zero types in svelte-check --incremental ([#2939](sveltejs/language-tools#2939))
##### [v4.4.0](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.4.0)

##### Minor Changes

- feat: provide `--incremental` and `--tsgo` flags ([#2932](sveltejs/language-tools#2932))

##### Patch Changes

- fix: ignore Unix domain sockets in file watcher to prevent crashes ([#2931](sveltejs/language-tools#2931))

- fix: properly use machine output by default for Claude Code ([`e9f58d2`](sveltejs/language-tools@e9f58d2))
##### [v4.3.6](https://github.com/sveltejs/language-tools/releases/tag/svelte-check%404.3.6)

##### Patch Changes

- fix: don't hoist type/snippet referencing $store ([#2926](sveltejs/language-tools#2926))
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