jiti-meet/modules/util/helpers.js

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2016-11-11 15:00:54 +00:00
const logger = require("jitsi-meet-logger").getLogger(__filename);
/**
* Create deferred object.
* @returns {{promise, resolve, reject}}
*/
export function createDeferred () {
let deferred = {};
deferred.promise = new Promise(function (resolve, reject) {
deferred.resolve = resolve;
deferred.reject = reject;
});
return deferred;
}
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/**
* Reload page.
*/
export function reload () {
window.location.reload();
}
/**
* Redirects to new URL.
* @param {string} url the URL pointing to the location where the user should
* be redirected to.
*/
export function redirect (url) {
window.location.replace(url);
}
/**
* Prints the error and reports it to the global error handler.
* @param e {Error} the error
* @param msg {string} [optional] the message printed in addition to the error
*/
export function reportError (e, msg = "") {
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logger.error(msg, e);
if(window.onerror)
window.onerror(msg, null, null,
null, e);
}
/**
* Creates a debounced function that delays invoking func until after wait
* milliseconds have elapsed since the last time the debounced
* function was invoked
* @param fn
* @param wait
* @param options
* @returns {function(...[*])}
*/
export function debounce(fn, wait = 0, options = {}) {
let leading = options.leading || false;
let trailing = true;
let isCalled = false;
if (typeof options.trailing !== 'undefined') {
trailing = options.trailing;
}
return (...args) => {
if(!isCalled) {
if (leading) {
fn(...args);
}
setTimeout(() => {
isCalled = false;
if (trailing) {
fn(...args);
}
}, wait);
isCalled = true;
}
};
}