Automatic npm publish action

[TheWebDevel]

Refer https://github.com/marketplace/actions/publish-to-npm. Adding their instruction to this PR to make it easier for you.

When someone changes the version in package.json to 1.2.3 and pushes a commit to master with the message Release 1.2.3, the npm-publish action will create a new tag v1.2.3 and publish the package to the npm registry.

Inputs

These inputs are optional: that means that if you don't enter them, default values will be used and it'll work just fine.

tag_name: the name pattern of the new tag
tag_message: the message pattern of the new tag
commit_pattern: the pattern that the commit message needs to follow
workspace: custom workspace directory that contains the package.json file

Environment variables

GITHUB_TOKEN: this is a token that GitHub generates automatically, you only need to pass it to the action as in the example
NPM_AUTH_TOKEN: this is the token the action will use to authenticate to npm. You need to generate one in npm, then you can add it to your secrets (settings -> secrets) so that it can be passed to the action. DO NOT put the token directly in your workflow file.

[praveenjuge]

Thanks!