Could someone please confirm if these two are essentially the same? It seems a bit strange to me.
interface TypeA {
time: string | undefined;
}
interface TypeB {
time?: string;
}
Could someone please confirm if these two are essentially the same? It seems a bit strange to me.
interface TypeA {
time: string | undefined;
}
interface TypeB {
time?: string;
}
They have some similarities, but they are not exactly the same. Consider the following example:
interface TypeA {
time: string | undefined;
}
interface TypeB {
time?: string;
}
const exampleA: TypeA = {}
const exampleB: TypeB = {}
The variable exampleA will result in an error because it requires the undefined time to be explicitly defined. Simply leaving out the property is not enough. On the other hand, exampleB does not produce any errors.
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