Promise not returning value of request

Question

I have this promise:

function getAPI(token)
{
return new Promise((resolve, reject) => {
    console.log(\"Request API\");
    GM_xmlhttpRequest({
        meth         


        

Answer 1

You're creating multiple promises, because each call to getAPI creates and returns a new promise.

getAPI shouldn't call itself (or if it does, it should pass the new promise into resolve); instead, just retry the part within it you need to retry, something along these lines:

function getAPI(token) {
    return new Promise((resolve, reject) => {
        // Function to do the request
        function doRequest() {
            console.log("Request API");
            GM_xmlhttpRequest({
                method: "GET",
                url: "URL" + token,
                onload: function(response) {
                    console.log(response.responseText);
                    if (response.responseText == "NOT_ANSWER" || response.responseText.indexOf("ERRO") > -1) {
                        // Not what we wanted, retry
                        console.log(response.responseText + " - Calling Myself in 5 Seconds");
                        setTimeout(doRequest, 5000);
                    }
                    else {
                        console.log('Call API - Giving Result');
                        resolve(response.responseText.split("_")[1]);
                    }
                }
            });
        }
        doRequest();
    });
}

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Side note: Your code using getAPI is checking for promise rejection, but nothing in getAPI ever rejects the promise.