// install Node Vertion Maniger (nvm)

https://github.com/coreybutler/nvm-windows/releases/download/1.1.9/nvm-setup.exe

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// Launch windows ternimal as administrator

Right click start >> Select "Windows Terminal (admin)"

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// Run the following commands to install and use the right node version (16.17.0)

nvm install 16

nvm on

nvm use 16.17.0

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// Install gulp, yeoman and microsoft/generator 

npm install gulp-cli yo @microsoft/generator-sharepoint --global

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// create your project folder

mkdir helloworld && cd helloworld

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// generate sharepoint/online webpart

yo @microsoft/sharepoint

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// Complete the following 

? What is your solution name? HelloWorld                    <!-- enter the sulution name -->

? Which type of client-side component to create? WebPart    <!-- select WebPart -->

Add new Web part to solution helloworld.                    <!-- project name -->

? What is your Web part name? Hello World                   <!-- project name -->

? Which template would you like to use? No framework        <!-- select no framework -->

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// Open up your code editor and head to the following file

config >> serve.json

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// Enge the following line

"initialPage": "https://mysite.sharepoint.com/_layouts/workbench.aspx"  <!-- enter the link to your sharepoint site where it says mysite.sharepoint.com -->

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// return to your terminal and run

gulp trust-dev-cert

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// then run

gulp serve