Formula-Parser

A react app that parses API provided formula, does calculation, and sends result to the API

Input and Output

Sample Input provided by the API

[
  {
    "formula": "a+b+2+x"
  },
  {
    "formula": "c-d+v"
  }	
]

Sample Output posted to the API

[
  {
    "formula": "a+b+2+x",
    "values": {
      "a": 2,
      "b": 3,
      "x": 4
    },
    "result": 11
  },
  {
    "formula": "c-d+v",
    "values": {
      "c": 10,
      "d": 5,
      "v": 4
    },
    "result": 9
  }	
]

How to run

• Make sure to have the node version v10.15.1 and npm version 6.4.1. Install the latest lts via nvm.
• Backend server must be kept running to successfully run the frontend. Open terminal and cd to backend directory.
• run npm i
• run npm start
• In another terminal/tab cd to frontend directory.
• run npm i
• run npm start
• fill the inputs and hit submit button.
• monitor the terminal where backend is running. The result will be printed in the terminal.
• run npm test to run test. This has no connection with the backend.

** frontend uses create-react-app.