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Web Development
TypeScript is JavaScript with types. It catches many mistakes while you write code, before they reach users, and compiles to plain JavaScript.
Created by Microsoft, it lets developers describe the shape of data, such as what fields a course or order has, so editors can warn about errors instantly.
Most modern frameworks, including Next.js, support it out of the box, and it is now standard on professional teams.
Example
A developer renames a field in a course record. TypeScript immediately flags every page still using the old name.
Why it matters
Types make large codebases safer to change, which keeps projects cheaper to maintain.
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Web Development
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