tianji-client-sdk
Version:
101 lines (100 loc) • 3.15 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CancelablePromise = exports.CancelError = void 0;
class CancelError extends Error {
constructor(message) {
super(message);
this.name = 'CancelError';
}
get isCancelled() {
return true;
}
}
exports.CancelError = CancelError;
class CancelablePromise {
_isResolved;
_isRejected;
_isCancelled;
cancelHandlers;
promise;
_resolve;
_reject;
constructor(executor) {
this._isResolved = false;
this._isRejected = false;
this._isCancelled = false;
this.cancelHandlers = [];
this.promise = new Promise((resolve, reject) => {
this._resolve = resolve;
this._reject = reject;
const onResolve = (value) => {
if (this._isResolved || this._isRejected || this._isCancelled) {
return;
}
this._isResolved = true;
if (this._resolve)
this._resolve(value);
};
const onReject = (reason) => {
if (this._isResolved || this._isRejected || this._isCancelled) {
return;
}
this._isRejected = true;
if (this._reject)
this._reject(reason);
};
const onCancel = (cancelHandler) => {
if (this._isResolved || this._isRejected || this._isCancelled) {
return;
}
this.cancelHandlers.push(cancelHandler);
};
Object.defineProperty(onCancel, 'isResolved', {
get: () => this._isResolved,
});
Object.defineProperty(onCancel, 'isRejected', {
get: () => this._isRejected,
});
Object.defineProperty(onCancel, 'isCancelled', {
get: () => this._isCancelled,
});
return executor(onResolve, onReject, onCancel);
});
}
get [Symbol.toStringTag]() {
return "Cancellable Promise";
}
then(onFulfilled, onRejected) {
return this.promise.then(onFulfilled, onRejected);
}
catch(onRejected) {
return this.promise.catch(onRejected);
}
finally(onFinally) {
return this.promise.finally(onFinally);
}
cancel() {
if (this._isResolved || this._isRejected || this._isCancelled) {
return;
}
this._isCancelled = true;
if (this.cancelHandlers.length) {
try {
for (const cancelHandler of this.cancelHandlers) {
cancelHandler();
}
}
catch (error) {
console.warn('Cancellation threw an error', error);
return;
}
}
this.cancelHandlers.length = 0;
if (this._reject)
this._reject(new CancelError('Request aborted'));
}
get isCancelled() {
return this._isCancelled;
}
}
exports.CancelablePromise = CancelablePromise;