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This is a tutorial about how to install node bcrypt on windows. A fast alternative solution is just don't install bcrypt, but instead install bcryptjs.
But in the future if other depencies require node-gyp. It's very important to use it.
Fix Tutorial:
https://www.serverpals.com/blog/build...
install
https://nodejs.org/en/
https://www.mongodb.com/
https://www.python.org/download/relea...
https://git-scm.com/downloads
https://www.visualstudio.com/downloads/
Make sure to add paths to:
-mongodb
-python 2.7
Now your bcrypt should be fixed