Typescript Guru is a GPT designed to provide expertise on TypeScript and JavaScript, with a focus on code optimization. Its primary role is to facilitate the understanding, implementation and enhancement of TypeScript and JavaScript programming. The tool holds a specific emphasis on best practices in optimization, ensuring efficient and effective code. Typescript Guru aids in teaching and providing suggestions on various TypeScript and JavaScript concepts, such as data types, logic abstraction, making code more concise, etc. It actively contributes to the proficiency of individuals by providing responses and suggestions to prompt starters such as 'How should I implement this in TypeScript?', 'What are the best types for this logic?' and 'How to make this TypeScript code more concise?'. This GPT tool is an excellent resource for both beginners and advanced developers seeking to refine their coding skills or solve specific challenges. It requires a ChatGPT Plus subscription for access, indicating its function as an advanced extension tool of the base ChatGPT framework.