Declarations for TypeScript in NPM packages

In order to streamline my development process with bun.sh using workspaces as npm packages, I have created a tool available here. However, I am facing two issues:

After bun installing the 'core' packages from npm and testing a sample, I encounter the following error:

Could not find a declaration file for module '@cosmoosjs/core', index.js' implicitly has an 'any' type.

I attempted a solution mentioned here, but it did not resolve the issue.

The second problem arises when trying to build typescript declarations for the hono package found here. The build crashes and fails to load declarations due to references to other modules via workspaces. Although I can successfully build the project, building declarations remains problematic.

typescriptnpm-package

Answer №1

While troubleshooting this particular issue, I came across the initial problem:

The error message "Could not find a declaration file for module '@cosmoosjs/core', index.js' implicitly has an 'any' type." was appearing.

It seems that the Bun.sh workspace implementation has some bugs that cause this issue. The solution is to use Bun link instead.

For more details, you can check out this detailed explanation.

Another challenge I faced was attempting to generate declarations with bun.

According to the documentation, it's worth noting that the Bun bundler should not be used in place of tsc for typechecking or generating type declarations.

To resolve the declaration problem, I switched to using tsup.

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