As stated on https://www.typescriptlang.org/docs/handbook/declaration-files/do-s-and-don-ts.html, it is recommended to utilize multiple types for a parameter in a function (refer to the union part)
/* OK */
interface Moment {
utcOffset(): number;
utcOffset(b: number|string): Moment;
}
However, I am encountering an issue with Angular indicating an unresolved variable for the following method:
isFooBar(fooBar: Foo|Bar){
if(fooBar.isFoo){ // error here
console.log("is foo");
}
}
I have defined two classes as follows:
export class Foo {
isFoo: boolean;
}
export class Bar {
isBar: boolean;
}
Is there a mistake in how I am using it?
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