RequestBuilder.js

const requestBuilder = async (domain, RAD, endpoint, ID, parameters, isDisplay) => {
    let url = `https://${domain}/API/Account/${RAD}`;
    if (isDisplay) {
        url = url + `DisplayTemplate`
    }
    if (endpoint == "Label") {
        url = `${url}/ItemAs${endpoint}`
    } else {
        url = `${url}/${endpoint}`
    }
    if (ID == "") {
        url = `${url}.json`
    } else {
        url = `${url}/${ID}.json`
    }
    if (parameters != "") {
        url = `${url}?${parameters}`

    }

    if (ID == "") {
        const queryParamCheck = url.includes('?') ? `${url}offset` : `${url}?offset`

        let offset = 0;
        let results = [];
        let nextPage = true

        while (nextPage) {
            const makeRequest = await fetch(`${queryParamCheck}=${offset}`, {
                credentials: 'same-origin'
            })
            const requestJSONData = await makeRequest.json();
            if (requestJSONData.hasOwnProperty(endpoint)) {
                console.log(requestJSONData[endpoint])
                results.push(...requestJSONData[endpoint])
                offset += 100
            } else {
                nextPage = false;
            }
        }
        console.log(`The results from your request ${url} is `, results)

        return results;

    } else {
        const makeRequest = await fetch(`${url}`, {
            credentials: 'same-origin'
        })
        const requestJSONData = await makeRequest.json();

        return requestJSONData[endpoint]

    }
}

//Example

(async () => {
    console.log(await requestBuilder(window.location.host, 127704, 'Item', '220', '', false))
})()