chrome.runtime.onMessage.addListener(function (message, sender, sendResponse) {
    if (message.from === "DataExtracter:Extract") {
        if (!testArgs(...message.args)) {
            sendResponse(signitures);
            return;
        }
        extract(...message.args).catch(
            err => {
                console.log(err);
                alert(err);
            }
        );
    }
});