NCLI

A command-line interface utility that provides various methods for interacting with the terminal.

Install

yarn add @lczpln/ncli

or

npm install @lczpln/ncli --save

Usage

Initializes the NCLI class and sets up the required dependencies.

import ncli from "@lczpln/ncli";

const ncli = new NCLI();

Parameters

• titleColor: the color to use for the title text (default: "blue").
• subtitleColor: the color to use for the subtitle text (default: "whiteBright").
• msgColor: the color to use for message text (default: "whiteBright").
• optionsColor: the color to use for options text (default: "green").
• inputCharColor: the color to use for input characters (default: "blue").

All the parameters are optional and have default values. You can check all colors available here: https://github.com/chalk/chalk#colors

Methods

getUserInput(options)

Asynchronously prompts the user for input and returns the user's choice.

Example

const ncli = new NCLI();

const options = [
  { title: "Apple", action: (input) => input },
  { title: "Banana", action: (input) => input },
  { title: "Orange", action: (input) => input },
  { title: "Watermelon", action: (input) => input },
];

const fruitChosen = await ncli.getUserInput({
  title: "FRUIT SELECTION",
  subtitle: "Select your favority fruit",
  options,
});

const fruit = options[fruitChosen - 1].title;

// > 2

console.log(fruit); // Banana

or

const ncli = new NCLI();

const name = await ncli.getUserInput({
  title: "NAME SELECTION",
  subtitle: "What's your name?",
  action: (input) => input,
});

// > World

console.log("Hello " + name + "!"); // Hello World!

Parameters

• options: an object that contains the following properties:
  • title: the title to be displayed on the terminal.
  • subtitle: the subtitle to be displayed on the terminal.
  • image: an object that contains the following properties:
    • path: the path to the image file.
    • process: a boolean flag indicating whether the image should be processed or not.
    • width: width of the image in terminal.
    • height: height of the image in terminal.
    • preserveAspectRatio: a flag indicating whether the aspect ratio of the image should be preserved or not.
  • action: a function that will be called after the user input is received.
  • error: a boolean flag indicating whether an error message should be displayed.
  • options: an array of objects that represent the options that the user can choose from.
    • title: options title to be displayed like this: 1) myTitle
    • action action to be dispatched after user input a valid option number
  • noClear: a boolean flag indicating whether the terminal should be cleared before displaying the prompt.

The _clear is used to clear the terminal if noClear is false.

log()

Displays a message on the terminal.

Example

ncli.log({ msg: "Searching for user" });

//await searchUsers()

Parameters

• title: the title to display before the message (default: null)
• msg: the message to be displayed on the terminal (required)
• color: the color to use for the message text (default: "whiteBright").
• noClear: boolean value indicating if the terminal should be cleared before displaying the message (default: false).

The _clear is used to clear the terminal if noClear is false.

waitForKey(message)

Asynchronously waits for the user to press any key on the keyboard.

Example

await ncli.waitForKey({});

or

await ncli.waitForKey({ msg: "My awesome msg! Please press enter (:" });

Parameters

• title: the title to display before the message (default: null)
• msg: the message to be displayed on the terminal (required)
• color: the color to use for the message text (default: "whiteBright").
• noClear: boolean value indicating if the terminal should be cleared before displaying the message (default: false).

The _clear is used to clear the terminal if noClear is false.