return type of findDeep should be optional

[casamia918]

// findDeep.d.ts

export default function findDeep(
  obj: any,
  callback?: (
    value: any,
    key: string | number,
    parentValue: any,
    context: IIterateeContext
  ) => void | boolean,
  options?: {
    pathFormat?: "string" | "array"; // = "string";
    checkCircular?: boolean; // = false;
    childrenPath?: Path[];
    includeRoot?: boolean;
    leavesOnly?: boolean; // = false;
    rootIsChildren?: boolean;
  }
): IDeepEntry;

In findDeep, return type is defined as IDeepEntry. But it should be optional, when no value is found.

At now, I only use findDeep method. So, I don't know how many methods should be modified in this library.

So, I just leave this comment, not PR

Thanks for create this library.

[YuriGor]

Hi, thank you!
Feel free to create as much small PRs as you want whenever you found something wrong in types.
I am not familiar with typescript, so it would be great to have fix suggestions from someone who is using it.

[casamia918]

#85

[YuriGor]

Thank you for PR, merged and will be published soon.