How to Properly Register axios Globally in Vue & TypeScript Application

I've been fighting with Vue, TypeScript and Axios and I cannot arrive at what feels like a satisfactory solution.

Most guides will tell you to do this:

Main.ts

import axios from 'axios';

Vue.prototype.$http = axios;

And then use the $http. TypeScript doesn't like this:

Property '$http' does not exist on type CombinedVueInstance

How can I register axios globally and avoid any TypeScript errors?

Based on @GentlemanCrow answer below I created a file in my root directory called:

axios-plugin.d.ts

import _Vue from 'vue';
import Axios from 'axios';

export function AxiosPlugin<AxiosPlugOptions>(Vue: typeof _Vue, options?: AxiosPluginOptions): void {
    // do stuff with options
    Vue.prototype.$http = Axios;
}

export class AxiosPluginOptions {
    // add stuff
}

import { AxiosStatic } from 'axios';

declare module 'vue/types/vue' {
    interface Vue {
        $http: AxiosStatic;
    }
}

This produces the error:

(TS) An implementation cannot be declared in ambient contexts.

And on Vue.prototype.$http = Axios; the error is:

Statements are not allowed in ambient contexts.

Removing the export function AxiosPlugin function and attempting to execute a request errors with:

TypeError: "this.$http is undefined"

Where should the following code go?

export function AxiosPlugin<AxiosPlugOptions>(Vue: typeof _Vue, options?: AxiosPluginOptions): void {
    // do stuff with options
    Vue.prototype.$http = Axios;
}