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reactjsHow do I enable development mode in ReactJS?


To enable development mode in ReactJS, you need to set the NODE_ENV environment variable to development.

Example code

process.env.NODE_ENV = 'development';

This will enable React's development-only features, such as warning messages, and give you access to additional development tools.

Code explanation

  • process: This is the global Node.js object that contains information about the current process.
  • env: This is an object that contains environment variables.
  • NODE_ENV: This is the environment variable that is used to indicate the current environment.
  • development: This is the value that should be assigned to the NODE_ENV environment variable to indicate that the application is running in development mode.

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