This is an example of how to use nbb, an ad-hoc CLJS scripting tool for Node.js, to implement a Github action.
This action prints "Hello World" or "Hello" + the name of a person to greet to the log.
It was created using
this
tutorial but instead of JavaScript it uses a small JS wrapper index.mjs + the
actual CLJS script action.cljs.
All JS dependencies, including nbb, are compiled into a single file,
dist/index.mjs, using ncc. This is
recommended in the Github docs as an alternative to commiting your
node_modules into git. Because ncc needs to statically know which
dependencies are required, this is done in the index.mjs wrapper and not
inside the action.cljs script. The dependencies are then passed as parameters
into a function defined in action.cljs.
Because Github actions uses an old version of Node.js (12, see
issue), the action currently
uses a workaround in run.cjs: it forks to the system-wide installed version of
Node.js which is 14.17.6 at this time of writing.
Required The name of the person to greet. Default "World".
The time we greeted you.
on: [push]
jobs:
hello_world_job:
runs-on: ubuntu-latest
name: A job to say hello
steps:
- name: Hello world action step
id: hello
uses: borkdude/nbb-action-example@v0.0.2
with:
who-to-greet: 'Mona the Octocat'
# Use the output from the `hello` step
- name: Get the output time
run: echo "The time was ${{ steps.hello.outputs.time }}"See bb tasks for relevant tasks for development.