Pastaga

Simple scaffolding tool using git repository for providing templates.

npm i -g pastaga

Requires node > 6.0

Concepts

Pastaga does not provide any generator but it synchronizes with git repository to execute code.

Repository must respect the following specific structure :

\
+- command1
 +- index.js (code to execute)
 +- manifest.json (optional description file)
+- command2
 +- index.js
 ...

You can create many context each with a different repository. Repositories are synchronized on every execution.

How to use it

Pastaga has been initially created to use with vulcainjs project.

A default context is defined referencing the vulcainjs code template repository.

This repository provides commands for initialize a new project or generate artefacts. This is a good example to see how to create your own commands.

For example, try pastaga init --template vulcain-service to create a new vulcainjs micro service.

How to create commands

1. Create a new github repository
2. Add a folder named 'MyCommand'
3. Add it a file named index.js with the following code.

class Context {
    *prompts() {
      yield { name: 'name', type: 'input', message: "What's your name"};
    }

    exec() {
        console.log("Hello " + this.state.name);
    }
}

exports default = Context;

4. Commit and publish your changes
5. Set Pastaga to use your context with: pastaga context mycontext --address <git repository address>
6. Run Pastaga with

pastaga : Display a list of commands to select. In this case, only one : MyCommand

pastaga MyCommand : Run directly your command by requesting your name.

pastaga MyCommand --name Boy : Execute your command and display Hello Boy

Manifest.json

You can add an optional manifest.json file close to the index.js to customize your command. The following properties are allowed:

Name	Description	Default value
name	Command name	Folder name
entryPoint	Context file name	index.js
state	Initial state	{}
description	Command description
order	Display order	100

Command context class

Context class inherit two properties:

• state which contains every command options (from initial state and prompts)
• context object exposing execution context properties. See source code for details.

exec can return a command name which will be executed in the current context.

Prompts

Prompts uses inquirer.

Prompts are made in order thanks to the generator function.

Using a generator function allows you to change question based on the previous answer.

Prompt are displayed only if there is no value defined.

Execution context

You can switch between context with pastaga context <name>

You can update a context with pastaga context <name> [--address <address>] [--branch <branch>] [--set key=value]*

set is used to set global initial state. Use unset key to remove a value.

You can force a context in a command scope by adding --context <name> to the command line.