Create project structure and install nessess 1mkdir -p ~/code/exercise/ts-demo && cd "$_" 2npm init 3mkdir src 4touch tsconfig.json 5npm i –save-dev @types/node 6npm i –save-dev @types/express 7npm i –save-dev @types/mocha 8npm i express 9npm i nodemon The src/App.ts content 1import * as express from …

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