What is the reason for my tsx file to correctly display in my React application without using Babel?

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It is possible that your browser or Node.js environment has built-in support for TypeScript without needing to use Babel as a transpiler. Some environments may be able to read and understand TypeScript syntax out of the box, allowing the code to be executed without any additional configuration. However, it is still recommended to use a tool like Babel to ensure compatibility with older browsers and other environments that may not have built-in TypeScript support.