create a react app quickly from scratch
first, you'll have nodejs already installed and npm v5.2+ installed so you have npx installed too. next, go to the following github repo to follow the instructions: https://github.com/facebook/create-react-app on a Mac, from a terminal window type: $ mkdir CODE $ cd CODE $ npx create-react-app my-app npx: installed 91 in 108.154s Creating a new React app in /Users/tony/Documents/IBM/GBS/LAND AI/CODE/my-app . Installing packages. This might take a couple of minutes. Installing react , react-dom , and react-scripts ... yarn add v1.19.1 [1/4] 🔍 Resolving packages... [2/4] 🚚 Fetching packages... [3/4] 🔗 Linking dependencies... warning "react-scripts > @typescript-eslint/eslint-plugin > tsutils@3.17.1" has unmet peer dependency "typescript@>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta". [4/4] ...