Add update toast type when toast.promise resolves

[alexandredev3]

Now the type prop accepts a function and receives the data returned from the promise. It's similar to the render prop.

example:

const promise = () => Promise.resolve({ errors: 'error' });

toast.promise(promise, {
  success: {
    render: ({ data }) => data.errors ? 'Promise rejected' : 'Promise resolved',
    type: (data) => data.errors ? 'error' : 'success',
  },
  error: 'Promise rejected'
});

There's no need to work around using toast.update anymore if the promise resolves with an error.

resolves #819

[alexandredev3]

Hey @fkhadra. Could you look at this PR and tell me what you think?

[coveralls]

Coverage increased (+1.8%) to 92.422% when pulling 76689b6 on alexandredev3:feature/toast-promise-update-toast-type into 75525b1 on fkhadra:main.

[fkhadra]

Hey @alexandredev3, as a graphql user I understand the need of adding such API. it can also be useful when using native fetch as it won't throw when the response is not ok.
That being said, I'm not fully convinced, your implementation is ok don't get me wrong 😊. I'm just not sure if this should belong to the library.
I'm doing a bunch of cleanups here #852. Let's keep the PR open for now and see what we can do about it when things will be more clear

[alexandredev3]

Hi @fkhadra! I don't fully understand why you're not sure if this should belong to the library.
To me, it makes sense to have such a feature in the library.
Similar to the render prop, I think we should also be able to change the toast type when the promise resolves. Since that would be really handy when dealing with APIs that won't throw an error.

[JavierBrooktec]

any updates on this?