Question 1

How does Denoify handle Node.js built-in modules like fs or crypto?

Accepted Answer

Denoify provides basic support for some built-ins (e.g., crypto) and allows custom replacers for others, but complex APIs may require manual adaptations using .deno.ts files or external Deno equivalents.

Question 2

Denoify vs JSR: which is better for cross-runtime libraries?

Accepted Answer

For new projects, JSR is recommended as it's a Deno-led initiative with broader tooling. Denoify is better for existing TypeScript NPM modules needing retroactive Deno support without a full rewrite, but JSR may supersede it long-term.

Question 3

Can I use Denoify with a project that has no dependencies?

Accepted Answer

Yes, but if your project uses TypeScript with specific compiler options, you might skip Denoify entirely. The README notes alternatives like `moduleResolution: bundler` for dependency-free code, though Denoify still helps with publishing on deno.land/x.

Question 4

How to set up Denoify for a TypeScript library with complex dependencies?

Accepted Answer

Start by adding a denoify field in package.json, then use custom replacers for unsupported dependencies. Refer to the demo repo and documentation for step-by-step guidance on handling edge cases like graphql or child_process.

Question 5

What happens if a dependency doesn't work with Denoify?

Accepted Answer

You can write a custom replacer to map the NPM module to a Deno-compatible URL (e.g., using skypack.dev) or create a .deno.ts override file within your module to provide a Deno-specific implementation.

Question 6

Is Denoify still useful now that Deno supports NPM modules?

Accepted Answer

Yes, for publishing on deno.land/x to increase visibility, ensuring compatibility with pre-NPM Deno versions, and handling the ~10% of NPM modules that need adaptations. However, for simple cases, direct npm: imports might suffice.

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