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# Create a JavaScript Action Using TypeScript | ||
# rfc-propose | ||
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[![GitHub Super-Linter](https://github.com/actions/typescript-action/actions/workflows/linter.yml/badge.svg)](https://github.com/super-linter/super-linter) | ||
![CI](https://github.com/actions/typescript-action/actions/workflows/ci.yml/badge.svg) | ||
## Description | ||
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Use this template to bootstrap the creation of a TypeScript action. :rocket: | ||
A GitHub Action aiming to help in the creation of RFC proposal referenda. | ||
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This template includes compilation support, tests, a validation workflow, | ||
publishing, and versioning guidance. | ||
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If you are new, there's also a simpler introduction in the | ||
[Hello world JavaScript action repository](https://github.com/actions/hello-world-javascript-action). | ||
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## Create Your Own Action | ||
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To create your own action, you can use this repository as a template! Just | ||
follow the below instructions: | ||
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1. Click the **Use this template** button at the top of the repository | ||
1. Select **Create a new repository** | ||
1. Select an owner and name for your new repository | ||
1. Click **Create repository** | ||
1. Clone your new repository | ||
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## Initial Setup | ||
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After you've cloned the repository to your local machine or codespace, you'll | ||
need to perform some initial setup steps before you can develop your action. | ||
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> [!NOTE] | ||
> | ||
> You'll need to have a reasonably modern version of | ||
> [Node.js](https://nodejs.org) handy. If you are using a version manager like | ||
> [`nodenv`](https://github.com/nodenv/nodenv) or | ||
> [`nvm`](https://github.com/nvm-sh/nvm), you can run `nodenv install` in the | ||
> root of your repository to install the version specified in | ||
> [`package.json`](./package.json). Otherwise, 16.x or later should work! | ||
1. :hammer_and_wrench: Install the dependencies | ||
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```bash | ||
npm install | ||
``` | ||
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1. :building_construction: Package the TypeScript for distribution | ||
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```bash | ||
npm run bundle | ||
``` | ||
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1. :white_check_mark: Run the tests | ||
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```bash | ||
$ npm test | ||
PASS ./index.test.js | ||
✓ throws invalid number (3ms) | ||
✓ wait 500 ms (504ms) | ||
✓ test runs (95ms) | ||
... | ||
``` | ||
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## Update the Action Metadata | ||
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The [`action.yml`](action.yml) file defines metadata about your action, such as | ||
input(s) and output(s). For details about this file, see | ||
[Metadata syntax for GitHub Actions](https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions). | ||
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When you copy this repository, update `action.yml` with the name, description, | ||
inputs, and outputs for your action. | ||
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## Update the Action Code | ||
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The [`src/`](./src/) directory is the heart of your action! This contains the | ||
source code that will be run when your action is invoked. You can replace the | ||
contents of this directory with your own code. | ||
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There are a few things to keep in mind when writing your action code: | ||
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- Most GitHub Actions toolkit and CI/CD operations are processed asynchronously. | ||
In `index.ts`, you will see that the action is run in an `async` function. | ||
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```javascript | ||
import * as core from '@actions/core'; | ||
... | ||
async function run() { | ||
try { | ||
... | ||
} | ||
catch (error) { | ||
core.setFailed(error.message); | ||
} | ||
} | ||
run() | ||
``` | ||
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For more information about the GitHub Actions toolkit, see the | ||
[documentation](https://github.com/actions/toolkit/blob/master/README.md). | ||
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So, what are you waiting for? Go ahead and start customizing your action! | ||
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1. Create a new branch | ||
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```bash | ||
git checkout -b releases/v1 | ||
``` | ||
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1. Replace the contents of `src/` with your action code | ||
1. Add tests to `__tests__/` for your source code | ||
1. Format, test, and build the action | ||
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```bash | ||
npm run all | ||
``` | ||
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> [!WARNING] | ||
> | ||
> This step is important! It will run [`ncc`](https://github.com/vercel/ncc) | ||
> to build the final JavaScript action code with all dependencies included. | ||
> If you do not run this step, your action will not work correctly when it is | ||
> used in a workflow. This step also includes the `--license` option for | ||
> `ncc`, which will create a license file for all of the production node | ||
> modules used in your project. | ||
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1. Commit your changes | ||
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```bash | ||
git add . | ||
git commit -m "My first action is ready!" | ||
``` | ||
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1. Push them to your repository | ||
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```bash | ||
git push -u origin releases/v1 | ||
``` | ||
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1. Create a pull request and get feedback on your action | ||
1. Merge the pull request into the `main` branch | ||
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Your action is now published! :rocket: | ||
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For information about versioning your action, see | ||
[Versioning](https://github.com/actions/toolkit/blob/master/docs/action-versioning.md) | ||
in the GitHub Actions toolkit. | ||
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## Validate the Action | ||
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You can now validate the action by referencing it in a workflow file. For | ||
example, [`ci.yml`](./.github/workflows/ci.yml) demonstrates how to reference an | ||
action in the same repository. | ||
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```yaml | ||
steps: | ||
- name: Checkout | ||
id: checkout | ||
uses: actions/checkout@v3 | ||
- name: Test Local Action | ||
id: test-action | ||
uses: ./ | ||
with: | ||
milliseconds: 1000 | ||
- name: Print Output | ||
id: output | ||
run: echo "${{ steps.test-action.outputs.time }}" | ||
``` | ||
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For example workflow runs, check out the | ||
[Actions tab](https://github.com/actions/typescript-action/actions)! :rocket: | ||
Learn more about the RFC proposal process [here](https://github.com/polkadot-fellows/RFCs#process). | ||
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## Usage | ||
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After testing, you can create version tag(s) that developers can use to | ||
reference different stable versions of your action. For more information, see | ||
[Versioning](https://github.com/actions/toolkit/blob/master/docs/action-versioning.md) | ||
in the GitHub Actions toolkit. | ||
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To include the action in a workflow in another repository, you can use the | ||
`uses` syntax with the `@` symbol to reference a specific branch, tag, or commit | ||
hash. | ||
To use the action in a repository, add a job that is going to run on specific comments on PRs: | ||
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```yaml | ||
steps: | ||
- name: Checkout | ||
id: checkout | ||
uses: actions/checkout@v3 | ||
jobs: | ||
rfc-propose: | ||
name: Propose an RFC creation transaction | ||
if: ${{ github.event.issue.pull_request && startsWith(github.event.comment.body, '/rfc-propose') }} | ||
runs-on: ubuntu-latest | ||
steps: | ||
- uses: paritytech/rfc-propose@main | ||
env: | ||
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | ||
``` | ||
- name: Test Local Action | ||
id: test-action | ||
uses: actions/typescript-action@v1 # Commit with the `v1` tag | ||
with: | ||
milliseconds: 1000 | ||
### Environment variables | ||
- name: Print Output | ||
id: output | ||
run: echo "${{ steps.test-action.outputs.time }}" | ||
``` | ||
The action uses the `GH_TOKEN` environment variable supplied to it. | ||
The built-in `secrets.GITHUB_TOKEN` variable is enough - it has the access rights to comment on a PR, | ||
which is all that the actions needs. |