Deno add --dev flag not doing anything
When execution
deno add --dev @package/example the package is added to deno.json as import same without the --dev flag.
I noticed I could add the devDependencies in package.json, but I would like to skip package.json when using deno.
What is the correct way to add dev dependencies with deno ?4 Replies
Deno itself doesn't have the concept of
devDependencies. The way dependencies work in Deno is that it crawls all reachable dependencies in the entry point file and only downloads those. In other words dev and prod dependencies are typically mixed in the imports field in deno.json and Deno takes care of only downloading the needed dependenciesthank you @marvinh. , so what the
--dev flag is used for https://docs.deno.com/runtime/reference/cli/add/#options-dev ?It's used for when you're using
package.json alongside deno.json . When the --dev flag is specified it will install npm dependencies it into the devDependencies field of package.json. That flag does nothing if you don't have a package.json and is not needed if you're developing straight in Denothank you @marvinh.