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SW30004: Checker expression unavailable

The integration cannot find the code that TypeScript needs to check for an expression.

This error occurs when the compiler needs type information for an expression, but the integration cannot find that expression in the code that TypeScript checks. This usually happens in Vue, Svelte, or Astro components, where a converter produces the checked code. The message names the operation.

How to fix

  • With an official integration, update the Stillwind packages and the framework packages. If the error remains, report it with the component.
  • In your own integration, keep the mapping between the original expressions and the checked code, including for unsaved editor buffers.