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nwellis/DotNotation.ts

Last active February 2, 2022 22:36
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DotNotation.ts
type ChildAndParent<TParent, TChild> = TParent extends string
? `${TParent}.${TChild extends string ? TChild : never}`
: TChild;
type DotNotation<T, TParent = false> = T extends object
? { [K in keyof T]: TParent | DotNotation<T[K], ChildAndParent<TParent, K>> }[keyof T]
: TParent
type Foo = DotNotation<{
a: "hello"
b: "darkness"
c: {
d: "my"
e: "old"
f: {
g: "friend"
}
}
}>
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nwellis commented Feb 2, 2022

Another @Beng89 💎

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