LemonUtilities

LemonUtilities is a lightweight and simple JavaScript library for file management, randomization, and for CLIs (Console User Interfaces).

Setup

Installation

Go to your console, and type the following commands in order

cd "C:/path/to/your/project"

npm install lemonutilities

How to Use

In your main JavaScript file, write the following

const {file, random, cli} = require('lemonutilities');

Down below, you will find a list of functions LemonUtilitites has to offer.

Functions

File Management

read(filePath)

• Description: returns file contents from a path.
• Parameters:
  • filePath (string): Path to file
• Returns (string): File contents
• Example:

const message = file.read('message.txt');

// Hello, World!
console.log(message);

write(filePath, content)

• Description: writes data to a file.
• Parameters:
  • filePath (string): Path to file
  • content (string): Content to write to file
• Example:

const message = 'Goodbye, World :(';

file.write('message.txt', message);

checkPathAccessible(directoryPath)

• Description: Check if a path is accessible by your script
• Parameters:
  • directoryPath (string): Path to check
• Returns (bool): true/false
• Example:

if (file.checkPathExists('goober/cat.png')) {
    console.log('cat.png exists!');
} else {
    console.log('cat.png does not exist :(');
}

checkPathExists(directoryPath)

• Description: Check if a path exists
• Parameters:
  • directoryPath (string): Path to check
• Returns (bool): true/false
• Example:

if (file.checkPathExists('goober/cat.png')) {
    console.log('cat.png exists!');
} else {
    console.log('cat.png does not exist :(');
}

getFiles(directoryPath, fileExtension)

• Description: Gets files from a folder or directory
• Parameters:
  • directoryPath (string): Path to check
  • fileExtension (string, optional): File extension to check for
• Returns (array): Array of all file names
• Example:

const images = file.getFiles('goober', 'png');

// ['bird.png', 'cat.png', 'dog.png', 'sillygoober.png']
console.log(images);

getSubFolders(directoryPath)

• Description: Gets subfolders from a folder or directory
• Parameters:
  • directoryPath (string): Path to check
• Returns (array): Array of all subfolder names
• Example:

const subfolders = file.getSubFolders('goober');

// ['extra silly', 'very gooberish']
console.log(subfolders);

moveDir(directoryPath, destinationFolderPath)

• Description: Moves a file, or an entire folder
• Parameters:
  • directoryPath (string): Path to file
  • destinationFolderPath (string): Folder to move the file to
• Example:

file.moveDir('goober/cat.png', 'goober/extra silly');

renameDir(directoryPath, newFileName)

• Description: Renames a file, or a folder
• Parameters:
  • directoryPath (string): File to rename
  • newFileName (string): New file name
• Example:

file.renameDir('goober/extra silly/cat.png', 'silly car.png');

deleteDir(directoryPath) (DANGEROUS)

• Description: Deletes a file, or an entire folder
• Parameters:
  • directoryPath (string): File to delete
• Example:

file.deleteDir('message.txt');

createFile(filePath)

• Description: Creates a file
• Parameters:
  • filePath (string): Path and file name
• Example:

file.createFile('message.txt');

createDir(directoryPath)

• Description: Creates a directory
• Parameters:
  • directoryPath (string): Directory name
• Example:

file.createDir('goober/extra silly/VERY silly');

cloneFile(filePath, destinationFolderPath)

• Description: Clones a file to a specified destination
• Parameters:
  • filePath (string): Path to file
  • destinationFolderPath (string): New file path
• Example:

file.cloneFile('goober/very silly/silly car.png', 'goober of the day/silly car.png');

cloneDir(directoryPath, destinationFolderPath)

• Description: Clones a folder and all contents to a specified destination
• Parameters:
  • directoryPath (string): Path to file
  • destinationFolderPath (string): New file path
• Example:

file.cloneDir('goober/very silly/silly car.png', 'goober of the day/silly car.png');

calculateDirSize(directoryPath)

• Description: Calculates the size of a file or folder contents in bytes
• Parameters:
  • directoryPath (string): Path to file
• Returns (string): Byte size
• Example:

const size = file.calculateDirSize('goober/bird.png');


// bird.png is 295419 bytes. (295.419KB)
console.log(`bird.png is ${size} bytes. (${size/1000}KB)`);

Randomness

getNum(min, max)

• Description: Returns a random number
• Parameters:
  • min (number): Minimum value
  • max (number): Maximum value
• Returns (num): Random number
• Example:

const num = random.getNum(0, 10);

console.log(num);

getInt(min, max)

• Description: Returns a random whole number
• Parameters:
  • min (number): Minimum value
  • max (number): Maximum value
• Returns (num): Random number
• Example:

const num = random.getInt(0, 10);

console.log(num);

getItem(array)

• Description: Returns a random item from an array
• Parameters:
  • array (array): Array to get item from
• Returns (any): Random item
• Example:

const items = ['goober', 'cat', 'dog', 'bird', true, false, 7, 8.5];
const item = random.getItem(items);

console.log(item);

arrayShuffle(array)

• Description: Shuffles an array
• Parameters:
  • array (array):
• Returns (array): Shuffled array
• Example:

const items = ['goober', 'cat', 'dog', 'bird', true, false, 7, 8.5];
const shuffledItems = random.arrayShuffle(items);

console.log(shuffledItems);

getChance(...chances)

• Description: Generates a random chance based on the inputed values
• Parameters:
  • ...chances (number): Chances
• Example:

const animals = ['cat', 'dog', 'bird'];
const chance = random.getChance(10, 8, 3);

/*
10 in 21 chance it will return 0,
8 in 21 for 1,
and 3 in 21 for 2
*/
console.log(animals[chance]);

generateToken(prefix)

• Description: Generates a random token for use in applications requiring secure identifiers
• Parameters:
  • prefix (string, optional): Prefix of the token
• Returns (string): Generated token
• Example:

const token = random.generateToken('LEM-');

console.log(token);

Inputs

consoleInput() (async function)

• Description: Asks user for input
• Returns (string): Response
• Example:

console.log('is the cat a goober? [y/n]\n\n');

cli.consoleInput().then(response =>  {
    if (response.toLowerCase == 'y') {
        console.log('YAYAYAYAYAYY');
    } else {
        console.log('Aw man :(');
    }
});

console.log('Gets printed after, but before the user hits enter.');

OR

console.log('is the cat a goober? [y/n]\n\n');

// This function needs to be async
async function askQuestion() {
    const response = await cli.consoleInput();

    if (response.toLowerCase == 'y') {
        console.log('YAYAYAYAYAYY');
    } else {
        console.log('Aw man :(');
    }

    console.log('Gets printed after the user hits enter.');
}

askQuestion();

editLastLine(newLine)

• Description: Edits the last line printed to the console
• Parameters:
  • newLine (string): New console text
• Example:

console.log('Not silly :(');
setTimeout(() => {
    cli.editLastLine('Silliest as can be :3');
}, 2000);

wait(seconds, showCountdown) (async function)

• Description: Waits a specified amount of time in seconds before allowing further code to run
• Parameters:
  • seconds (number): Time to wait in seconds
  • showCountdown (bool, optional): Shows "Waiting... x" message
• Example:

// This function needs to be async
async function waitExample() {
    console.log('Cloning folder in 5 seconds...');

    await cli.wait(5, true);

    file.cloneDir('goober/very silly', 'important');
}

waitExample();

pause()

• Description: Stops further code from running, and displays a "hit any key to continue" message
• Example:

console.log('Done!');

cli.pause();

console.log('But there\'s more!');