How to use Github Release Version Number in Github Action - github

Question

I have created a Github repo that has got an action to build the npm package and publish it to npmjs.com. The trigger for my action is the creation of a new release in Github. When creating the new release, Github is asking me for a version number. I would love to use this version number in the Action and provide it to the yarn publish command.
My ci-file looks like this (i stripped some parts that are not important here):
name: Deploy npm package
on:
release:
types: [created]
jobs:
publish-npm:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout#v1
- uses: actions/setup-node#v1
with:
node-version: 12
registry-url: https://registry.npmjs.org/
- run: yarn install
- run: yarn build
- run: yarn publish --new-version ${...}
env:a
NODE_AUTH_TOKEN: ${{secrets.npm_token}}
Is there an environmental variable that contains the version number from the release?

Answer 1

It should be ${{ github.event.release.tag_name }}. The structure of a release can be found here: https://developer.github.com/v3/repos/releases/#get-a-single-release
I'd also suggest to use
on:
release:
types: [published]
instead of created to avoid putting something to npm for draft releases.
See: https://help.github.com/en/actions/automating-your-workflow-with-github-actions/events-that-trigger-workflows#release-event-release
Hint:
To debug the event you can use:
jobs:
debug:
name: Debug
runs-on: ubuntu-latest
steps:
- name: Dump env
run: env | sort
- name: Dump GitHub context
env:
GITHUB_CONTEXT: ${{ toJson(github) }}
run: echo "$GITHUB_CONTEXT"

Answer 2

You can get tag version using ${{ github.event.release.tag_name }}.