synchronizationawaiterror
wow! this awesome!
install
npm i -D synchronizationawaiterror
or
yarn add synchronizationawaiterror
Its implementation is very simple
definition
export declare function SynchronizationAwaitError<T, B, E = Error>(
promise: Promise<T>,
beautifyTeturnValue?: (res: T) => B,
errorCaptured?: object
): Promise<[E, null] | [null, T | B]>;use
The return value of the first parameter will be the second value of the array you return
const [err, val] = SynchronizationAwaitError(Promise.resolve(1));
console.log(err, val); // null 1The second parameter is the same as his name to help you beautify your return value
import { SynchronizationAwaitError } from "synchronizationawaiterror";
interface Service {
res: string;
}
interface replaceType {
res: number;
}
interface ErrorInterface {
errorText: string;
}
(async function () {
const [err, val] = await SynchronizationAwaitError<
Service,
replaceType,
ErrorInterface
>(
// here！
Promise.resolve({ res: "1" }),
(result: Service) => {
const replace = Object.assign(result, { res: parseInt(result.res) });
return replace;
},
{ errorText: "hava a error!" }
);
console.log(err, val); // null 1 => number
})();The third parameter determines your error return value
import { SynchronizationAwaitError } from "synchronizationawaiterror";
interface Service {
res: string;
}
interface replaceType {
res: number;
}
interface ErrorInterface {
errorText: string;
}
(async function () {
const [err, val] = await SynchronizationAwaitError<
Service,
replaceType,
ErrorInterface
>(
// Pay attention here!
Promise.reject({ err: "hiahia!" }),
(result: Service) => {
const replace = Object.assign(result, { res: parseInt(result.res) });
return replace;
},
{ errorText: "hava a error!" }
);
console.log(err, val); // { errorText: "hava a error!" , err: "hiahia!" }
})();Remember it synchronizationawaiterror!