Developer Begins TypeScript After Completing MERN Stack Chat App at Day 172

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A self-taught developer has reached Day 172 of their full-stack engineering learning track. Having recently completed a MERN stack Chat Application, they have now shifted focus to learning TypeScript. On the first day of this new phase, the developer explored core concepts including type safety, type annotations, and primitive types such as string, number, and boolean. They practiced defining strict type contracts on function inputs and return values to avoid runtime type mismatch errors.

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