functions

createHashFromFile.ts

import crypto from "crypto";
import fs from "fs";

// Creates a sha256 hash from a file
export const createHashFromFile = (filePath: string) => new Promise(resolve => {
  const hash = crypto.createHash('sha256');
  fs.createReadStream(filePath).on('data', data => hash.update(data)).on('end', () => resolve(hash.digest('hex')));
});

loadFile.ts

const { readFile } = require('fs').promises;

// Load a local file
async function loadFile(filepath: string) {
	try {
		const file = await readFile(filepath);
		return JSON.parse(file.toString());
	} catch (error) {
		console.log('Could not load file.');
	}
}

randomNumber.ts

// Generates a random number between min and max inclusive on both ends
export const randomNumber = (min:number, max:number) => {
	return Math.round(Math.random() * (max - min) + min);
}

sleep.ts

// Sleep for a certain number of seconds
export const sleep = (seconds:number) =>
	new Promise((resolve) => setTimeout(resolve, seconds * 1000));

toTitleCase.ts

// Adds the ability to Titlecase any string
String.prototype.toTitleCase = function () {
    return this.toLowerCase().replace(/^.|\s\S/g, (a:string) => a.toUpperCase());
}

// Capitalizes the text in a sentence
const capitalize = (word: string) => word.replace(/(^|\s)\S/g, l => l.toUpperCase());