@atomicjolt/lti-client/dist/libs/capabilities.js

Client Javascript libraries to handle LTI.

import i18next from "i18next";
export function getCapabilities() {
    return new Promise((resolve, reject) => {
        let parent = window.parent || window.opener;
        const timeout = setTimeout(() => {
            console.log(i18next.t("capabilities request timeout"));
            reject(new Error(i18next.t("Timeout while waiting for capabilities response")));
        }, 1000);
        const receiveMessage = (event) => {
            if (typeof event.data === "object" &&
                event.data.subject === "lti.capabilities.response" &&
                event.data.message_id === "aj-lti-caps") {
                removeEventListener("message", receiveMessage);
                clearTimeout(timeout);
                if (event.data.error) {
                    // handle errors
                    console.error(event.data.error.code);
                    console.error(event.data.error.message);
                    reject(new Error(event.data.errormessage));
                    return;
                }
                resolve(event.data.supported_messages);
            }
        };
        window.addEventListener("message", receiveMessage);
        parent.postMessage({
            subject: "lti.capabilities",
            message_id: "aj-lti-caps",
        }, "*");
        // Platform will post a message back or we'll timeout
    });
}
export async function getCapability(subject) {
    const caps = await getCapabilities();
    if (caps) {
        return caps.find((element) => element.subject == subject) || null;
    }
    return null;
}
//# sourceMappingURL=capabilities.js.map