Do you think it is essential to run NPM install?

I am developing an NPM library that utilizes socket.io and is being written in Typescript.

Imagine my library contains a function like this:

public someFunction = (_socket: Socket) => {}

When using my library in an application, only this function is called, not the socket.io directly:

public anotherFunction = ():void => {
    myLibraryClass.someFunction(socket);
}

It is clear that my library requires socket.io to be installed.

Yet, I am wondering if, in cases where I do not use anything from socket.io in my application, is it essential to install the socket.io library via NPM, or is installing just the @types file enough?

typescript

Answer №1

The someFunction method within your software library is designed to receive a socket instance from the user. When implemented in your application, you simply call this method with a socket instance. This means that the someFunction does not actually generate any socket instances itself; rather, it relies on receiving them from the caller. As a result, there is no need to install the socket.io package in your library - using @types is sufficient. However, when invoking someFunction in your application, where you provide a socket instance, you must also install the socket.io package (and @types if you are developing your app using TypeScript).

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