backstage-plugin-scaffolder-npm-actions package

This is a npm actions plugin for the scaffolder-backend in Backstage.

This contains a collection of actions for using with npm:

• npm:init
• npm:install
• npm:exec
• npm:config

Prerequisites

• Node and NPM must be installed in the environment your Backstage instance is running in, but it will most likely already be there since your Backstage instance runs in Node.

Getting started

In the root directory of your Backstage project:

yarn add --cwd packages/backend @mdude2314/backstage-plugin-scaffolder-npm-actions

Add the actions you'd like to the scaffolder:

// packages/backend/src/plugins/scaffolder.ts

import {
  createNpmExecAction,
  createNpmInitAction,
  createNpmInstallAction,
  createNpmConfigAction,
} from '@mdude2314/backstage-plugin-scaffolder-npm-actions';
import { ScmIntegrations } from '@backstage/integration';
import { createBuiltinActions, createRouter } from '@backstage/plugin-scaffolder-backend';

...

const integrations = ScmIntegrations.fromConfig(env.config);
const builtInActions = createBuiltinActions({
  catalogClient,
  integrations,
  config: env.config,
  reader: env.reader
});

const actions = [
    createNpmExecAction(),
    createNpmInitAction(),
    createNpmInstallAction(),
    createNpmConfigAction(),
  ...builtInActions
];

return await createRouter({
  logger: env.logger,
  config: env.config,
  database: env.database,
  reader: env.reader,
  catalogClient,
  actions
});

Example of using each of the three actions:

---
apiVersion: scaffolder.backstage.io/v1beta3
kind: Template
metadata:
  name: npm-demo
  title: My npm demo template
  description: Run npm commands in the task's working directory
spec:
  owner: mdude2314
  type: service

  parameters:
    - title: Npm init
      properties:
        packageToInstall:
          title: Package to install
          type: string
          description: The name of the npm package to install
        execArgs:
          title: Args for exec
          type: array
          description: Arguments to pass to the exec command

  steps:
    - id: npm-init
      name: init
      action: npm:init

    - id: npm-install
      name: install
      action: npm:install
      input:
        packageToInstall: ${{ parameters.packageToInstall }}

    - id: npm-config
      name: config
      action: npm:config
      input:
        args: ${{ parameters.execArgs }}

    - id: npm-exec
      name: exec
      action: npm:exec
      input:
        args: ${{ parameters.execArgs }}