Description

The given function evaluates a string that represents a mathematical expression that includes only integers and the following operators: +,-,* and /. Example: "100+20*89/3-48"

Environment setup

1. Make sure you are using the correct node version: nvm install
2. Install dependencies: npm i

Run tests

$ npm test

Tests are run in watch mode, so any change in the code will re-run all test cases.