TypeScript and the Dawn of Gradual Types

2023/07/13

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TypeScript, an open-source superset of JavaScript, offers developers the best of both static and dynamic typing. With optional types, TypeScript aims to make it easier to work with large codebases and strike a balance between correctness and productivity. This article explores the challenges of using dynamically-typed JavaScript, such as unpredictable behavior and frequent bugs, and how TypeScript addresses these issues. By adding type descriptions to variables, developers can ensure compatibility and catch errors during the build step. Amanda Silver, a former Group Program Manager on the TypeScript team, explains the benefits of TypeScript for large-scale projects. With TypeScript, developers can enjoy the flexibility of JavaScript while gaining better encapsulation and modularity for collaboration.