Like Promisable<X> but for arrays: X | X[]

[fregante]

I remember seeing this type somewhere, but I can't find it. Does it exist? Is it native?

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[voxpelli]

Like a MaybeArray<X>?

type MaybeArray<X> = X|Array<X>;

Can't remember seeing it somewhere, but I do believe I have created such helpers in some projects.

[fregante]

I'd also add the opposite of this: cast array

type CastArray<X | X[]> = X[]

[fratzinger]

+1.
What about calling it Arrayable<T>? This would follow Promisable<T>.