Description: React.StrictMode is a development tool in React that allows developers to identify potential issues in their applications. By wrapping components in this strict mode, additional warnings and checks are activated during development, helping to detect unsafe or inefficient coding practices. This mode does not affect the behavior of the application in production but focuses on improving code quality during the development phase. Some of the features that are activated include detecting unsafe side effects, identifying components that use deprecated lifecycle methods, and warning about the use of non-pure rendering functions. By using React.StrictMode, developers can ensure that their code is more robust and aligned with best practices recommended by the React community. This not only improves code maintainability but also facilitates the transition to future versions of React, as dependencies on deprecated features are minimized.