Publish a prerelease package to NPM

npm-prerelease.md

• Update package.json, set version to a prerelease version, e.g. 2.0.0-rc1, 3.1.5-rc4, ...
• Run npm pack to create package
• Run npm publish <package>.tgz --tag next to publish the package under the next tag
• Run npm install --save package@next to install prerelease package

Now you can also do this with npm (v9.4.1 at the time of posting this):

npm publish --tag next