References
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The goal of TypeScript is to be a static typechecker for JavaScript programs - in other words, a tool that runs before your code runs (static) and ensures that the types of the program are correct (typechecked).
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The handbook is split into two sections:
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The Handbook
…… In the interests of clarity and brevity , the main content of the Handbook will not explore every edge case or minutiae of the features being covered. ……
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Reference Files
The reference section below the handbook in the navigation is built to provide a richer understanding of how a particular part of TypeScript works.
You can read it top-to-bottom, but each section aims to provide a deeper explanation of a single concept - meaning there is no aim for continuity.