Create a JavaScript Action
Use this template to bootstrap the creation of a JavaScript action.:rocket:
This template includes tests, linting, a validation workflow, publishing, and versioning guidance.
If you are new, there's also a simpler introduction. See the Hello World JavaScript Action
Create an action from this template
Click the Use this Template
and provide the new repo details for your action
Code in Master
Install the dependencies
$ npm install
Run the tests ✔️
$ npm test
PASS ./index.test.js
✓ throws invalid number (3ms)
✓ wait 500 ms (504ms)
✓ test runs (95ms)
...
Change action.yml
The action.yml contains defines the inputs and output for your action.
Update the action.yml with your name, description, inputs and outputs for your action.
See the documentation
Change the Code
Most toolkit and CI/CD operations involve async operations so the action is run in an async function.
const core = require('@actions/core');
...
async function run() {
try {
...
}
catch (error) {
core.setFailed(error.message);
}
}
run()
See the toolkit documentation for the various packages.
Publish to a distribution branch
Actions are run from GitHub repos. We will create a releases branch and only checkin production modules (core in this case).
Comment out node_modules in .gitignore and create a releases/v1 branch
# Dependency directories
# node_modules/
$ git checkout -b releases/v1
$ git commit -a -m "prod dependencies"
$ npm prune --production
$ git add node_modules
$ git commit -a -m "prod dependencies"
$ git push origin releases/v1
Your action is now published! 🚀
See the versioning documentation
Validate
You can now validate the action by referencing the releases/v1 branch
uses: actions/javascript-action@releases/v1
with:
milliseconds: 1000
See the actions tab for runs of this action! 🚀
Usage:
After testing you can create a v1 tag to reference the stable and tested action
uses: actions/javascript-action@v1
with:
milliseconds: 1000