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TypeScript: An Overview
TypeScript is a programming language built on top of JavaScript. Every JavaScript file is a valid TypeScript file, but TypeScript adds some powerful features that enhance the robustness and maintainability of applications.
What is TypeScript?
TypeScript addresses the shortcomings of JavaScript by introducing features like static typing. In static typing, variables can be declared with a specific type, such as a number or string. Unlike dynamic typing found in languages like JavaScript, TypeScript provides type checking at compile time.
Benefits of TypeScript
- Static Typing: Enables catching type-related errors early in the development process.
- Code Compilation: TypeScript code is compiled into JavaScript, making it compatible with all browsers.
- Refactoring: Easier code refactoring due to the availability of type information.
- Short-hand Notation: Provides concise syntax for common patterns, improving code readability and maintainability.
Drawbacks of TypeScript
- Compilation Step: Requires a compilation step before running the code, adding an extra layer of complexity to the development process.
- Discipline in Coding: Developers need to adhere to TypeScript’s typing rules and guidelines, which may require additional effort and discipline.
Compilation Process
To use TypeScript in a web application, the TypeScript code must be transpiled into JavaScript using a TypeScript compiler. This transpilation process ensures that the resulting JavaScript code is compatible with all browsers.
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