新的TypeScript异步/等待特性使用了ES6承诺。AngularJS使用具有稍微不同的接口的$q
服务承诺。
是否有任何方式使用TypeScript异步/等待特性与$q
服务承诺?
发布于 2017-01-24 09:52:37
你可以让它这样运作:
angular.module('your app')
.run(['$window', '$q', function($window, $q) {
$window.Promise = $q;
}]);
发布于 2016-02-25 15:14:55
我不认为你能直接使用它们。但是很容易将Q承诺转换为a++承诺,如下所示:
function Convert<T>(qPromise): Promise<T>
{
return new Promise<T>((resolve, reject) =>
{
qPromise.then((result: T) => resolve(result), (e) => reject(e));
});
};
发布于 2016-07-17 11:37:35
最后,我使用了以下解决方法:
declare var __awaiter: Function;
(window as any).__awaiter = __awaiter; // set global __awaiter to avoid declaring default __awaiter in other files
async () => { } // dummy async function to generate __awaiter code for current file
angular.module('ts-awaiter', []).run(['$timeout', ($timeout: ng.ITimeoutService) => {
function wrap(func: Function) {
return function () {
func.apply(this, arguments);
$timeout(() => { }); // run angular digest
};
}
var oldAwaiter = __awaiter;
(window as any).__awaiter = (thisArg: any, _arguments: any, P: Function, generator: any) => {
P = function (executor: Function) {
return new Promise<any>((resolve, reject) => {
resolve = wrap(resolve);
reject = wrap(reject);
executor(resolve, reject);
});
};
return oldAwaiter(thisArg, _arguments, P, generator);
};
}]);
ComliperforTyescript1.8在使用await
操作符的每个文件中生成await
函数。我将其替换为传递自定义Promise
构造函数的实现,该构造函数在每次resolve
和reject
调用之后启动摘要周期。下面是使用示例:https://github.com/llRandom/ts-awaiter
https://stackoverflow.com/questions/35629246
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