- Open Framer X, FILE > Show Project Folder
- Open Terminal window and type 'cd', then drag the "container" folder to the right of the cursor
- Type or paste the install string your package needs (npm or yarn) and hit Enter
- Wait for installation to complete
The Framer X project knows exactly where to place things and if you check your "package.json" file you should see your package under the "dependencies category
View Linton Ye's tweet to see it in action (https://twitter.com/lintonye/status/1029411284263919616)