Telegram Web K with changes to work inside I2P https://web.telegram.i2p/
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/*
* https://github.com/morethanwords/tweb
* Copyright (C) 2019-2021 Eduard Kuzmenko
* https://github.com/morethanwords/tweb/blob/master/LICENSE
*/
export interface CancellablePromise<T> extends Promise<T> {
resolve?: (value: T) => void,
reject?: (...args: any[]) => void,
cancel?: () => void,
notify?: (...args: any[]) => void,
notifyAll?: (...args: any[]) => void,
lastNotify?: any,
listeners?: Array<(...args: any[]) => void>,
addNotifyListener?: (callback: (...args: any[]) => void) => void,
isFulfilled?: boolean,
isRejected?: boolean
}
export function deferredPromise<T>() {
let deferredHelper: any = {
isFulfilled: false,
isRejected: false,
notify: () => {},
notifyAll: (...args: any[]) => {
deferredHelper.lastNotify = args;
deferredHelper.listeners.forEach((callback: any) => callback(...args));
},
lastNotify: undefined,
listeners: [],
addNotifyListener: (callback: (...args: any[]) => void) => {
if(deferredHelper.lastNotify) {
callback(...deferredHelper.lastNotify);
}
deferredHelper.listeners.push(callback);
}
};
let deferred: CancellablePromise<T> = new Promise<T>((resolve, reject) => {
deferredHelper.resolve = (value: T) => {
if(deferred.isFulfilled) return;
deferred.isFulfilled = true;
resolve(value);
};
deferredHelper.reject = (...args: any[]) => {
if(deferred.isRejected) return;
deferred.isRejected = true;
reject(...args);
};
});
// @ts-ignore
/* deferred.then = (resolve: (value: T) => any, reject: (...args: any[]) => any) => {
const n = deferredPromise<ReturnType<typeof resolve>>();
}; */
deferred.finally(() => {
deferred.notify = null;
deferred.listeners.length = 0;
deferred.lastNotify = null;
if(deferred.cancel) {
deferred.cancel = () => {};
}
});
Object.assign(deferred, deferredHelper);
return deferred;
}