Expanding interfaces and floating tooltips

In my current project using TypeScript in VS Code, I am defining three interfaces: A, B, and C. Each interface has two properties. Interface C extends interfaces A and B.

interface A {
  A1: boolean;
  A2: boolean;
}

interface B {
  B1: boolean;
  B2: boolean;
}

interface C extends A, B {
  C1: boolean;
  C2: boolean;
}

const ABC: C = {
  A1: true,
  A2: true,
  B1: true,
  B2: true,
  C1: true,
  C2: true,
};

console.log(ABC);

However, when I hover over C, only its own properties are displayed.

This limitation is not ideal as it prevents me from seeing the entire structure of interface C when working with objects in the codebase.

https://i.sstatic.net/8vwFY.png Is this behavior intentional?

typescriptvisual-studio-code

Answer №1

The reason behind this approach is to prevent your preview from becoming cluttered when working with a more complex interface such as HTMLElement. By only displaying properties that are directly relevant to the interface you are extending, it keeps things clean and organized. If you do require a comprehensive list of all available properties for C, simply type ABC. (if nothing appears, try pressing Ctrl+Space). You can also Ctrl+click on C to view its declaration, or continue onto A or B for further inspection.

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