Fix #89 Hooks cannot remove inherited properties

[supasate]

Fix #89 issue

[daffl]

Isn't this just a longer way of saying !obj || typeof obj[args[i]] === 'undefined'?

[supasate]

If using typeof obj[args[i]] === undefined, we will not know whether the property is belong to the current obj or ancestor prototype (direct owner). To delete that property, we need to delete it from the direct owner. So, we need to use hasOwnProperty.

(About the const name nestedFields, I just make it more explicit but I can just use args[i] if you think it's more concise.)

[supasate]

I refactored the code in my new commit to make it looks cleaner and more concise. Plz take a look. (I'll squash it later).

[daffl]

Are you sure that delete only works on the actual object? I just tried:

const o = { test: 'me' }
const oo = Object.create(o);

delete oo.test;

console.log(oo);

And I am getting an empty object logged.

[supasate]

Yes. I'm sure. It's hidden in __proto__.

[supasate]

It's the effect of prototype inheritance.

If the delete operator succeeds, it removes the property from the object entirely. However, if a property with the same name exists on the object's prototype chain, the object will inherit that property from the prototype.

Reference

[daffl]

Done. Released in v1.5.6. Thank you for bearing with me 😄

[supasate]

Never mind @daffl. It took me several days before figuring it out too!