defu

const defu: DefuInstance;

const defuArrayFn: DefuFn;

const defuFn: DefuFn;

createDefu: (merger?: Merger) => DefuFn;

type Defu<S extends Input, D extends Array<Input | IgnoredInput>> = D extends [
    infer F,
    ...infer Rest
]
    ? F extends Input
        ? Rest extends Array<Input | IgnoredInput>
            ? Defu<MergeObjects<S, F>, Rest>
            : MergeObjects<S, F>
        : F extends IgnoredInput
        ? Rest extends Array<Input | IgnoredInput>
            ? Defu<S, Rest>
            : S
        : S
    : S;