algorithms

🧠 CLI Toolkit App

This is a command-line interface (CLI) application that offers a variety of algorithms and tools including:

✅ Longest Valid Substring with Even Vowels
✅ Sum of Factorials
✅ Max Group Length Sum
✅ Feature Flag Management System
✅ SQL Query Analyzer (mock interface)

📦 Installation

# Clone the repository
git clone https://github.com/yourusername/cli-toolkit-app.git
cd cli-toolkit-app

Install dependencies, Build & Run

npm install
npm run build   # Compiles TypeScript to JavaScript
npm start       # Starts the CLI app (runs built JS)

Single dependencies installation, Build & Run

npm run cli     # Starts the CLI app (runs built JS)

Feature Flag Module usage

To add a new feature:

Create a new module in lib/your-feature-name/. Export a run() function that prompts the user and handles all related logic. Register the feature in the moduleMap enum inside src/app.ts. Add a corresponding case in the main switch statement inside the main() function to call your feature’s run() function.

Available Scripts

Add the following scripts to your package.json to simplify your workflow:

"scripts": {
  "build": "tsc",
  "start": "node dist/app.js",
  "cli": "npm run build && npm run start"
}

Requirments

Node.js >= 16.x TypeScript >= 4.x Inquirer

Usage

Once you run the app, you’ll be prompted to select one of the available algorithms/tools:

Choose an option from the list. Follow the prompts to enter input data. See the results printed on the console. Choose whether to run another test or exit.

Example

npm run cli

? Select which algorithm to use: (Use arrow keys)
> longest substring with valid even vowels
  sum of factorials
  max group length sum
  feature Flag
  SQL Queries

? Enter a string to test: hello world
Your Input: hello world
The longest valid substring is: 4 long

? Do you want to test another string? (Y/n) n
👋 Done!

Contact

Amir Samimi +989124971667

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