juicy-repl

An extensible JavaScript REPL

Table Of Contents

• Why use Juicy?
• Demo
• Running using global command
• Running from within a program
• Default Options
• Options
• Development
• Author
• Contributors

Why use Juicy?

• Juicy supports private npm packages. Just install juicy-repl globally and host it on your machine, tell it which packages to include, and in less than a minute you have a custom REPL running locally.
• Flow. Juicy supports Flow syntax, allowing you to copy and paste directly from your source without making syntax modifications.
• 300+ themes. Juicy implements all themes from Rainglow. Thanks to Dayle Rees for building these themes.
• Same editor as VS Code.
• Autocomplete/intellisense
• Easy sharing. Quickly create a link to what you're working on and share it with anyone.
• Save your work. Juicy allows you to pin your work and return to it at anytime without any need to signup or login.
• Last but not least, Juicy is just plain awesome!

Demo

juicy-js.com

Running using global command

Install juicy-repl

# with npm
npm install -g juicy-repl

# with yarn
yarn global add juicy-repl

Example 1: out of the box quick start

juicy

Example 2: with command line args

juicy --port 80 --detach false --processTitle "custom-repl" --replPageTitle "My Custom REPL" --hideHeader true

Example 3: with config file

juicy --config "~/REPL_CONFIG.json"

Example 4: with config file added environment variables

# add to ~/.bash_profile
export JUICY_CONFIG=~/REPL_CONFIG.json

juicy

Running from within a program

Install juicy-repl

# with npm
npm install --save juicy-repl

# with yarn
yarn add juicy-repl

const juicy = require('juicy-repl');

// supply any, all, or no options
const options = { ... };

juicy(options)
    .then((app) => {
        // extend express app
        app.get('/custom/api', res.json({ data: 'custom' }));
    });

Default Options

{
    packages: [
        'ramda',
        'joi',
        'lodash',
        'bluebird',
        'moment',
        'uuid'
    ],
    aliases: {
        ramda: [
            'R',
            'Ramda'
        ],
        lodash: [
            '_'
        ],
        bluebird: [
            'Promise'
        ]
    },
    configPath: null,
    port: 3000,
    detach: true,
    processTitle: 'juicy-repl',
    replPageTitle: 'Juicy REPL',
    gaid: null,
    hideHeader: false,
    spinnerPath: null,
    spinnerBgColor: null,
    faviconPath: null,
    headerLogoPath: null,
    headerTitle: null,
    headerSubtitle: 'A JavaScript REPL that feels like an IDE',
    headerColor: null,
    headerFontColor: null
};

Options

• packages
• aliases
• configPath
• port
• detach
• processTitle
• replPageTitle
• gaid
• hideHeader
• spinnerPath
• spinnerBgColor
• faviconPath
• headerLogoPath
• headerTitle
• headerSubtitle
• headerColor
• headerFontColor

options.packages

Type: Array<String>

Description: A list of npm packages to include when building the REPL.

Default value:

[
    'ramda',
    'joi',
    'lodash',
    'bluebird',
    'moment',
    'uuid'
]

---

options.aliases

Type: Object<String, Array<String>>

Description: Specify one or more aliases to expose as global variables for the packages.

Default value:

{
    ramda: [
        'R',
        'Ramda'
    ],
    lodash: [
        '_'
    ],
    bluebird: [
        'Promise'
    ]
}

---

options.configPath

Type: String

Description: Absolute path to config file.

Default value: null

Command Line: --configPath '~/REPL_CONFIG.json'

---

options.port

Type: Number

Description: The port number the REPL server will be exposed on.

Default value: 3000

Command Line: --port 80

---

options.detach

Type: Boolean

Description: If true, then the REPL server will detach into a child process and allow the main process to exit. Otheriwse the main process will suspend while the REPL server is running. It is suggested to set detach to false if using nohup or a process manager such as forever or pm2.

Default value: true

Command Line: --detach false

---

options.processTitle

Type: String

Description: The process.title for the REPL server process.

Default value: 'juicy-repl'

Command Line: --processTitle 'my-custom-repl'

---

options.replPageTitle

Type: String

Description: The document.title for the REPL browser app.

Default value: 'Juicy REPL'

Command Line: --replPageTitle 'My REPL'

---

options.gaid

Type: String

Description: Google Analytics ID. If set, then google analytics script is added to the page.

Default value: null

Command Line: --gaid 'UA-112996224-1'

---

options.hideHeader

Type: Boolean

Description: If true, then the header of the REPL will be hidden.

Default value: false

Command Line: --hideHeader true

---

options.spinnerPath

Type: String

Description: Set to absolute path of image to loading spinner.

Default value: null

Command Line: --spinnerPath '/Users/myuser/images/spinner.gif'

---

options.spinnerBgColor

Type: String

Description: If set, then the spinner will have a circular background filled with this color

Default value: null

Command Line: --spinnerBgColor '#FFFFFF'

---

options.faviconPath

Type: String

Description: Set to absolute path of image to override the favicon.

Default value: null

Command Line: --faviconPath '/Users/myuser/images/favicon.ico'

---

options.headerLogoPath

Type: String

Description: Set to absolute path of image to override logo in header.

Default value: null

Command Line: --headerLogoPath '/Users/myuser/images/my-repl-logo.png'

---

options.headerTitle

Type: String

Description: Overrides the title in the header. Use 'none' to hide the title.

Default value: null

Command Line: --headerTitle 'My REPL'

---

options.headerSubtitle

Type: String

Description: The subtitle in the header. Use 'none' to hide the subtitle.

Default value: 'A JavaScript REPL that feels like an IDE'

Command Line: --headerSubtitle 'powered by Juicy'

---

options.headerColor

Type: String

Description: If set, overrides the backgorund color of the header.

Default value: null

Command Line: --headerColor '#FF0000'

---

options.headerFontColor

Type: String

Description: If set, overrides the font color of the header.

Default value: null

Command Line: --headerFontColor '#FFFFFF'

---

Development

git clone https://github.com/djorg83/juicy
cd juicy
yarn dev

Author

Daniel Jorgensen

Contributors

• Daniel Jorgensen
• Ricardo Spear