Astro "astro check" TypeScript errors in CI

By Daniel Zoghalchali·Latchkey

astro check type-checks .astro templates and TypeScript across the project. It exits non-zero when it finds errors and prints the count. It commonly fails in CI when a type is wrong or when generated content types are absent because the build has not run.

What this error means

A step running astro check prints "Result (N files): X errors" and exits non-zero, listing type errors in .astro or .ts files.

Result (42 files):
- 2 errors
- 0 warnings
src/pages/index.astro:8:22 - error ts(2339): Property 'titel' does not
exist on type 'Props'.

Common causes

A real type error in code or templates

A wrong property, a bad prop type, or a mismatched return surfaces under astro check.

Missing generated content/collection types

Content collection types are generated by astro sync/build; if they are absent, astro:content types are unknown and check fails.

How to fix it

Fix the reported type errors

1. Open each file and line astro check reports and correct the type.
2. Re-run astro check until it reports zero errors.

npx astro check

Run astro sync before checking

Generate the content and route types so astro:content imports type-check, then run the checker.

- run: npx astro sync
- run: npx astro check

How to prevent it

• Run astro check locally before pushing.
• Run astro sync before astro check in CI so generated types exist.
• Keep prop and content types accurate.

Frequently asked questions

Related guides

References

• Node.js documentation
• npm CLI documentation
• GitHub Actions documentation