Terminal in React

A tiny component that renders a terminal

Install

npm install terminal-in-react --save

or if you use yarn

yarn add terminal-in-react

Usage

import React, { Component } from 'react';
import Terminal from 'terminal-in-react';

class App extends Component {
  showMsg = () => 'Hello World'

  render() {
    return (
      <div>
        <Terminal
          color="green"
          backgroundColor="black"
          barColor="black"
          style={{ fontWeight: 'bold', fontSize: '1em' }}
          commands={{
            'open-google': () => window.open("https://www.google.com/", "_blank"),
            showmsg: this.showMsg,
            popup: () => alert("Terminal in React")
          }}
          description={{
            'open-google': 'opens google.com',
            showmsg: 'shows a message',
            alert: 'alert', popup: 'alert'
          }}
          msg="You can write anything here. Example - Hello! My name is Foo and I like Bar."
        />
      </div>
    );
  }
}

Be careful when copying this example because it uses window object ('open-google': () => window.open("https://www.google.com/", "_blank"),) which is only available on the client-side and it will give you an error if you're doing server side rendering.

Working

To add your own command, use prop commands which accepts an object. This objects then maps command name -> command function.

Let's take an example. You want to open a website with a command open-google

<Terminal commands={{ 'open-google': () => window.open("https://www.google.com/", "_blank")}} />

Add a description of your command using prop description.

<Terminal description={{ 'open-google': 'opens google' }} />

You can have the terminal watch console.log/info function and print out. Thank you so much Jonathan Gertig for this 👇

<Terminal watchConsoleLogging />

You can have the terminal pass out the cmd that was input

<Terminal commandPassThrough={cmd => `-PassedThrough:${cmd}: command not found`} />

you can also handle the result with a callback

<Terminal
  commandPassThrough={(cmd, print) => {
    // do something async
    print(`-PassedThrough:${cmd}: command not found`);
  }}
/>

Minimize, maximize and close the window

Advanced commands

You can give your commands options and get them back parsed to the method. Using this method will also give your command a build in help output. With the option -h or --help.

<Terminal
  commands={{
    color: {
      method: (args, print, runCommand) => {
        print(`The color is ${args._[0] || args.color}`);
      },
      options: [
        {
          name: 'color',
          description: 'The color the output should be',
          defaultValue: 'white',
        },
      ],
    },
  }}
/>

The command Api has three parameters arguments, print, and runCommand.

arguments will be an array of the input split on spaces or and object with parameters meeting the options given as well as a _ option with any strings given after the options.
print is a method to write a new line to the terminals output. Any string returned as a result of a command will also be printed.
runCommand is a method to call other commands it takes a string and will attempt to run the command given

Check this example for more information.

Customization

Use

prop color to change the color of the text.
prop backgroundColor to change the background.
prop barColor to change the color of bar.
prop prompt to change the prompt (>) color.

What's more ?

will support images, gifs
plugins

Follow me on Twitter @NTulswani for new updates and progress 😄

API

Props	Type	Default
color	string	'green'
backgroundColor	string	'black'
prompt	string	'green'
barColor	string	'black'
description	object	{}
commands	object	{ clear: this.clearScreen(), help: this.showHelp(), show: this.showMsg() }
msg	string	-
watchConsoleLogging	bool	false
commandPassThrough	function	null

Built-in commands

clear - Clears the screen
help - List all the commands
show - Shows a msg if any
echo - Outputs anything given
edit-line - Edits the last line or a given line using the -l argument

Built-in functionality

Check the history of your commands by pressing key up and key down.

Where to use ?

Embed it as a toy on your website
For showcasing
Explain any of your project using this terminal component
or just play with it

You want a X feature

Sure! Create an issue for that and I will look into it.

Contributing

Contributing Guide

astelvida / terminal-in-react