When analyzing types defined by intersection in Typescript, I notice that the hint remains identical to the original definition:
https://i.stack.imgur.com/mjvI8.png
However, what I actually want is to visualize the resulting shape, similar to this:
https://i.stack.imgur.com/r63ya.png
Is there a quick and efficient method to achieve this visualization?
I believe there isn't a direct way to instruct your IDE to perform this task automatically, but you have the option to create a type function that will determine the type you require. Referencing the response from a similar question, I would define a function called Expand:
type Expand<T> = T extends infer U ? { [K in keyof U]: U[K] } : never;
This function walks through all properties of a type (or union of types), including those from various intersections, and consolidates them into a single object type. You can then either utilize Expand<C> directly or assign C as Expand<A & B>:
type ExpandedC = Expand<A & B>;
/*
type ExpandedC = {
a: number;
b: string;
c: boolean;
d: Date;
}
*/
Ultimately achieving the desired result. Hopefully, this information proves beneficial to you. Best of luck!
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