Simple Calculator Logic

A simple calculator logic package that provides an enum CalculatorButtons and a class CalculatorLogic for basic calculator functionality.

Installation

You can install this package using npm or yarn:

npm install simple-calculator-logic
# or
yarn add simple-calculator-logic

Usage

Importing

You can import the CalculatorButtons enum and the CalculatorLogic class as follows:

import { CalculatorButtons, CalculatorLogic } from 'simple-calculator-logic';

CalculatorLogic

CalculatorLogic is a class that represents a basic calculator with the following features:

• Arithmetic operations (addition, subtraction, multiplication, division)
• Square root calculation
• Percentage calculation
• Negation of numbers
• Clearing the calculator state

Example usage:

const calculator = new CalculatorLogic();
calculator
    .pressKey(CalculatorButtons.Five)
    .pressKey(CalculatorButtons.Plus)
    .pressKey(CalculatorButtons.Three)
    .pressKey(CalculatorButtons.Equals);

console.log(calculator.getDisplay()); // Output: "8"

CalculatorButtons

CalculatorButtons is an enum that provides a set of calculator button values for use with CalculatorLogic. The available button values include:

• Plus
• Minus
• Multiply
• Divide
• SquareRoot
• Percentage
• Negate
• Equals
• Clear
• Decimal
• Numeric values (e.g., One, Two, ..., Nine, Zero)

Testing

To run tests for the simple-calculator-logic package, you will need to have Node.js and npm or yarn installed on your system.

1. First, ensure that you have installed the necessary development dependencies by running the following command in the package directory:

   npm install
   # or
   yarn install

2. Once the development dependencies are installed, you can run the tests using the following command:

   npm test
   # or
   yarn test

3. The test suite will run, and you will see the test results in your console.

License

This package is open-source and available under the MIT License.