declare function trace(arg: string | number | boolean );
declare function trace(arg: { id: number; name: string });
Each function definition must have a unique function signature.
- Title Page
- Copyright and Credits
- About Packt
- Contributors
- Preface
- TypeScript Tools and Framework Options
- Types, Variables, and Function Techniques
- Interfaces, Classes, and Inheritance
- Decorators, Generics, and Asynchronous Features
- Declaration Files and Strict Compiler Options
- Global variables
- Using JavaScript code blocks in HTML
- Writing your own declaration file
- Module merging
- Declaration syntax reference
- Strict compiler options
- Summary
- Third-Party Libraries
- TypeScript Compatible Frameworks
- Test-Driven Development
- Testing Typescript Compatible Frameworks
- Modularization
- Object-Oriented Programming
- Dependency Injection
- Building Applications
- Let's Get Our Hands Dirty
- Other Books You May Enjoy
The declaration file syntax
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