

To install the linter, run the following two commands (after you've installed Node.js and npm). Microsoft provides a JavaScript linter to help you catch common errors when using the Office JavaScript library. Install and use the Office JavaScript linter You can use any code editor or IDE that supports client-side development to build your web part, such as: If you don't already have a Microsoft 365 account, you can get a free, 90-day renewable Microsoft 365 subscription that includes all Office apps by joining the Microsoft 365 developer program.

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For details on how to do this, see npm's instructions. You may wish to use a Node version manager to allow you to switch between multiple versions of Node.js and npm, but this is not strictly necessary. To check if you already have npm installed and see the installed version, run the following in the command line.

To install npm, run the following in the command line. Npm is an open source software registry from which to download the packages used in developing Office Add-ins. Follow the installation instructions for your operating system. Install Node.js by downloading the latest recommended version from their website. Node.js is a JavaScript runtime you will need to develop modern Office Add-ins. This guide assumes that you know how to use a command line tool. A Microsoft 365 account which includes the subscription version of Office.If you already have these installed, you are ready to begin a quick start, such as this Excel React quick start. You'll need to install the tools from the list below. This guide helps you set up tools so you can create Office Add-ins by following our quick starts or tutorials.
