pack commands interact with the pkg directory that's
created when you run
wasm-pack build. The
pack command creates a tarball
from the pkg directory and the
publish command creates a tarball from the
pkg directory and publishes it to the NPM registry.
Underneath, these commands use
npm pack and
npm publish. You can read
more about these in the NPM documentation:
Both these commands take the path to the pkg directory as the first argument. You can either set the argument directly to the pkg directory or to the parent of the pkg directory:
$ wasm-pack pack myproject/pkg | 🎒 packed up your package! $ wasm-pack pack myproject | 🎒 packed up your package!
If you try to call
publish on another directory, you get an error:
$ wasm-pack pack myproject/src/ Unable to find the pkg directory at path 'myproject/src/', or in a child directory of 'myproject/src/'
If you don't set a path, they use the current directory as the path.
You can also publish tagged releases with the optional
--tag argument, e.g.
wasm-pack publish --tag next
By default, the
latest tag is used to identify the current version of a package,
and npm install <pkg> (without any @<version> or @<tag> specifier) installs the latest tag.
You can read more about distribution tags on NPM.