This question is a continuation of the previous discussion on Typescript property does not exist on union type.
One solution suggested was to utilize the in operator to evaluate objects within the union. Here's an example:
type Obj1 = { message: string }
type Obj2 = { text: string }
const getText = (obj: Obj1 | Obj2): string => {
if ("message" in obj) {
return obj.message
}
return obj.text
}
However, attempting to evaluate it with a variable causes the same error to occur:
const getText = (obj: Obj1 | Obj2): string => {
let property = "message"
if (property in obj) {
return obj.message
}
return obj.text
}
Is there something obvious that I am overlooking?