Support @vue/composition-api setup function

What problem does this feature solve?

Don’t extend context and this with $axios field

What does the proposed changes look like?

import { useAxios } from '@nuxtjs/axios';

...
setup() {
  const $axios = useAxios();

  return { $axios };
}
...

<div align="right">_{This feature request is available on Nuxt community (#c365)}</div>

[NickBolles]

Here’s a simple plugin composable you can create. The same method can be used for almost all nuxt modules

import { useContext } from "@nuxtjs/composition-api";
import { NuxtAxiosInstance } from "@nuxtjs/axios";

export function useAxios(): NuxtAxiosInstance {
  const { $axios } = useContext();

  if (!$axios) {
    // throw error, no store provided
    throw new Error("nuxt axios is not defined!");
  }
  return $axios;
}

[danielroe]

@crutch12 If you want to use the provide/inject methodology with Nuxt 2 you can do so with the onGlobalSetup helper.