ajax in RxJS

[hazartilirot]

I was watching your course implementing a piece of code:

type Food = {
    id: number
    uid: string
    dish: string
    description: string
    ingredient: string
    measurement: string
}
type Nation = {
    id: number
    uid: string
    nationality: string
    language: string
    capital: string
    national_sport: string
    flag: string
}
type Name = {
    id: number
    uid: string
    name: string
    two_word_name: string
    four_word_name: string
    name_with_initials: string
    name_with_middle: string
    first_name: string
    middle_name: string
    last_name: string
    male_first_name: string
    female_first_name: string
    prefix: string
    initials: string
}



const randomName$ = ajax<Name>('https://random-data-api.com/api/name/random_name');
const randomNation$ = ajax<Nation>('https://random-data-api.com/api/nation/random_nation');
const randomFood$ = ajax<Food>('https://random-data-api.com/api/food/random_food');

forkJoin([randomName$, randomNation$, randomFood$]).subscribe(
    ([nameAjax, nationAjax, foodAjax]) => {
        console.log(`${nameAjax.response.first_name} ${nationAjax.response.capital} ${foodAjax.response.dish} `)
    }
)

When I run the code, it throws the error:

/node_modules/rxjs/src/internal/ajax/ajax.ts:397
    xhr = init.createXHR ? init.createXHR() : new XMLHttpRequest();
                                                  ^
ReferenceError: XMLHttpRequest is not defined

As far as I understand I should use the playground you've shared on your github...