Starting... This lab is to help our codes to standardize automatically. As you have experienced a lot, group coding is very difficult to be unified in one specific style. In this lab, we will explore how to make one style code with very efficient or effective libraries, prettier and lint for node js . Progressing... Prettier, link , is great for matching our coding style especially indent with tab or space, how many line and so on. The first step I took is to install prettier and put simple scripts in package.json, "prettier-fix": "prettier --write \"./**/*.{md,js,json}\"", "prettier": "prettier --check \"./**/*.{md,js,json}\"". I just run the script and I realized that there were a lot of prettier issues like indent, different ending style, tab, space and so on. Luckily, these scripts were very helpful since it provided auto editing features as well so I did not have to modify following the rules manually. Eslint, li...