I have a XInterface defined as:
export interface XInterface {
foo: (() => Foo[]) | Foo[],
bar: string,
baz: number
}
When declaring an object using this interface, I want the type of foo to be Foo[], like so:
const myObj: XInterface = {
[myFoo1, myFoo2],
'bar',
1
}
The challenge arises when ensuring that foo is an array and not a function that returns an array. Any tips on how I can accomplish this?
I have found a pattern that I believe is worth following. When passing this object to a location where XInterface is required, the receiver may not know whether foo is a function or an array. Therefore, it is necessary to always verify the content of foo. A more efficient solution would be to convert foo into a function.
To create XInterface, you can use the following structure:
foo: Foo[],
bar: string,
baz: int
Assume you have a function named:
anotherFunction(): Foo[] { .....};
Now, when constructing your object:
const newObj: XInterface = {
foo: anotherFunction(),
bar: 'bar',
baz: 1
}
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