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Last active April 21, 2022 11:47
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error-watch-mode.md

Watch mode scripts npm

Sometimes packages like Nodemon, Mocha who watch changes on files to perform some actions doesnt work correctly 🤕.

All these packages use CHOKIDAR library to watch file changes, to fix this behaviour on chokidar set environment variable CHOKIDAR_USEPOLLING=true.

# Linux
export CHOKIDAR_USEPOLLING=true

# Windows
set CHOKIDAR_USEPOLLING=true

See Here

If the project runs inside a virtual machine such as (a Vagrant provisioned) VirtualBox, create an .env file in your project directory if it doesn’t exist, and add CHOKIDAR_USEPOLLING=true to it. This ensures that the next time you run npm start, the watcher uses the polling mode, as necessary inside a VM.

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