Random Generator App

NodeJS | React | Typescript

This project built a String generator app in TypeScript.

Prerequisites

Install Node JS

Refer to https://nodejs.org/en/ to install nodejs

Cloning and Running the Application in local

Clone the project into local

git clone https://github.com/akrabulislam/Random-Generator-App.git
cd Random-Generator-App

Install dependencies for server

 npm install or yarn install

Run server

 npm run dev or yarn run dev

Server runs on http://localhost:5000

Install dependencies for client

 cd client
 npm install or yarn install

Run client

 npm start or yarn start

Client runs on on http://localhost:3000

Core Features

• It will generate a text file of random strings of size 2 MB (2,097,152 bytes)
• Download the text file
• Count the frequency of each type of strings
  • Alphabetic (ex : aaa,abcAe, DDDD ...)
  • Integers (ex : 1234,83049840,83948 ...)
  • Real Numbers (ex : 1.012,123445,1111.293 ...)
  • Alphanumerics (ex : aa123a,1DSA3, add0 ...)

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NOTE

Why file size may differ from 2 MB (2,097,152 bytes) ?

File size may be differ because , The size on the disk is the indicator of how much space a file occupies on the hard disk drive. When a file is stored in a modern storage device, it usually consumes slightly more storage than the actual file. That's the reason why you see the difference between size vs size on disk.

Source : https://superuser.com/questions/66825/what-is-the-difference-between-size-and-size-on-disk

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How to test the App ?

• Clicking on Generate button , will generate a file of random strings of size 2 MB.
• Clicking on Link, will download the file.
• Clicking on Report button , will show the count of each type of string.
  • Alphabetic
    • Contains a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z
    • Example abdie,diauekdh,aaaidue,aki,ei...
  • Integers
    • Contains 0,1,2,3,4,5,6,7,8,9
    • Example 31837,938,8,928,1,2...
  • Real Numbers
    • Contains 0,1,2,3,4,5,6,7,8,9
    • Example 1.2,938,8.9,9289.4758,12...
  • Alphanumerics
    • Contains a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,0,1,2,3,4,5,6,7,8,9
    • Example kaidu12,ok48,akdiuehn98,898dairi....

Others

Why to use Typescript?

• Unified modeling across web client and server for objects
• Type safety, and easy refactoring of typed code across web client and server
• A superior developer experience in a team environment