How can I inform typescript that I will be utilizing an interface containing a function called "foo" which always returns a string. The implementation of the function will be specified by the object implementing the interface.
For example:
export interface IMyInterface {
foo: ():string => void;
}
The issue is that the compiler is showing an error when including :string in the code.
What would be the correct syntax to avoid getting a return type of "any" if :string is removed?
The return type on the right-hand side of the arrow indicates the type being returned. Currently, you have specified it as void.
You can also opt for an alternative syntax (see bar below) where the status of "is a function" is embedded in the name.
interface Example {
foo: () => string;
bar(): string;
}
The positioning of the arrow function is indicated by =>.
export interface IMyInterface {
foo: () => string;
}
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