I am finding it difficult to define the type for the function foo as demonstrated below:
function foo() { do something }
foo.boo = () => { do something else }
foo("hello");
foo.boo("hello");
This JavaScript code is functioning correctly, which shows that it is achievable. However, what exactly would be the type of foo?
Finally, after exploring the Typescript Playground, I discovered the solution:
interface Bar {
(y: string): void;
zoo(y: string): void;
}
When discussing programming methods, the webpage here provides useful information.
In Typescript, you have the flexibility to return any value similar to Javascript, and specifying the return type of a function is straightforward.
//example of named functions
function myFunction(): { myMethod: () => number } {
return { myFunction: () => 10 };
}
// example of an anonymous arrow function
const myFunction = (): { myMethod: () => void } => {
return { myMethod: () => { return; } };
}
This should address the specific question at hand.
For further insight into functions, refer to: https://www.typescriptlang.org/docs/handbook/2/functions.html
Regarding a personal preference, you can choose to strictly define function returns or rely on type inference. Personally, I often opt not to strictly type function returns.
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