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What is the difference (if any) between:
declare interface SomeInterface { //members here } and:
interface SomeInterface { //members here } ?
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Declaring InterfacesAn interface adds the functionality of strong type checking for your functions, variables, or the class that is implementing the interface. Interfaces make sure that everything is implemented as expected.
Key Differences between TypeScript type vs interface Whereas interfaces are defined as a declaration of the only object type, which means the interfaces are restricted to only object type and do not support any other type for declaration. But we can say that interfaces have more capabilities than types in typescript.
Interface work better with objects and method objects, and types are better to work with functions, complex types, etc. You should not start to use one and delete the other.
TypeScript class vs.Classes are the fundamental entities used to create reusable components. It is a group of objects which have common properties. It can contain properties like fields, methods, constructors, etc. An Interface defines a structure which acts as a contract in our application.
declare keyword is usually used in type definitions to describe existing classes or variables that are defined externally in JavaScript code.
There's no difference between declare interface and interface because:
declare interface that's defined in JavaScript code; declare interface and interface are syntactically equal.
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