Trivial-core NPM

Trivial-Core

Build event-driven apps from templates. Full documentation at trivial-js.org.

Getting Started

Building an example webhook processor app from a template.

const { AppBuilder, AppTemplate } = require('trivial-core')

async function WriteExample() {
  const template = new AppTemplate('webhook_relay', '0.1')
  const builder = new AppBuilder()
  let manifest = await template.initialManifest()
  manifest.app_id = 'WebhookRelayDemo'
  builder.writeLocally(manifest)
}

WriteExample()

// Expected output

// [AppBuilder]    Starting to write 'WebhookRelayDemo'
// [AppBuilder]    Building...
// [CodeGenerator] Generating code...
// [CodeGenerator] Done
// [AppBuilder]    Done!
// [AppBuilder]    Results at ./slugs/WebhookRelayDemo

To run the app:

node slugs/WebhookRelayDemo/serve.js

Your app is now ready to receive POST requests at http://localhost:5000/webhooks/receive

with a JSON body, eg:

{
    "name": "Kvothe",
    "nickname": "Kingkiller"
}

Running Tests

npm test

//  Expected output

//> trivial-core@1.0.2 test
//> mocha 'test/**/*.js'
//  ...
//  456 passing (784ms)
//  2 pending

General Development

When running trivial-core it is necessary to build the ActionRegistry

In a local or server environment this is accomplished by entering the containing directory and running npm run build which includes all necessary logic.

However, when using trivial-core as dependency in a project or within a container you will need to construct the ActionRegistry as a part of your build step.

For example, if running your project within Docker you might create a build.js script to run as a part of your Dockerfile:

# build.js
const { ActionRegistry } = require('trivial-core')
const actionRegistry = new ActionRegistry()

console.log("Building ActionRegistry...")

try {
  actionRegistry.build()
  console.log("ActionRegistry built")
} catch (err) {
  console.log("Failed to build ActionRegistry")
  console.error(err)
}

# package.json
[other package information]
"scripts": {
  [your other scripts]
  "build": "node build.js"
}

# dockerfile
[other build logic]
RUN npm run build

Local Development

If you're making changes to this package while working on a project that imports this library, you'll want to link your project to the local version. This will let you use the unpublished version, without pushing to npm and re-installing. More info in the NPM Documentation

Note: If the Node versions are not the same for the package and the project you're importing into, npm link fail silently.

Make a global link to the local package directory:

cd ./trivial-core
nvm use vX.X.X # X.X.X should be match the dependent project's node version
npm link

In your example project, link to the unpublished version:

cd ../sample-project
npm link trivial-core

Install into your example app:

npm install trivial-core --package-lock-only

External Actions

You can supplement the catalog of actions trivial-core ships with.

Using gulp or a similar pre-builder, copy the action files into the package's action directory and build:

const { ActionRegistry } = require('trivial-core')
const actionRegistry = new ActionRegistry()

// Copy the files from your app into the package
function copyActionFiles(){
  return gulp.src(`source/lib/actions/**`) // this is the location of the new actions in your project
    .pipe(gulp.dest(`${actionRegistry.actionsRoot}/actionsv2/actions`)) // internal action location; unlikely you need to change this
}

// Define a gulp task to call the copyActionFiles function, then rebuild the registry
gulp.task('build', gulp.series(copyActionFiles, actionRegistry.build)

// In the shell, run the gulp task to copy the files to trivial-core and rebuild the action library files.
gulp build