[MODULE_NOT_FOUND] Error Plugin: @salesforce/lwc-dev-server: Cannot find module '@babel/helper-builder-binary-assignment-operator-visitor' Require stack:


2 Answers 2


This is solved now.

By going into this directory, mentioned in the log: root: /Users/YOUR_USER_NAME/.local/share/sfdx/node_modules/@salesforce/lwc-dev-server

I then deleted the node_modules folder and reinstalled the dependencies using:

npm install --save-dev

I referenced this issue on GitHub


I was able to fix this using:https://github.com/nodejs/node-gyp

1.run  'npm install -g node-gyp' in command prompt.

2.Install the current version of Python from the Microsoft Store package(I installed 3.10.8 from https://www.python.org/downloads/release/python-3108/) 3.Install Visual C++ Build Environment: Visual Studio Build Tools (using "Visual C++ build tools" workload) or Visual Studio Community (using the "Desktop development with C++" workload) 4.Launch cmd, 'npm config set msvs_version 2017' 5.now try to run ' sfdx plugins:install @salesforce/lwc-dev-server' Hope this helps

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