无法从TypeJ 3.8.3版本的NodeJs 12中从Promise.allSettled获取值 [英] Unable to get the value from Promise.allSettled in NodeJs 12 with Typescript 3.8.3 version

问题描述

我正在使用 Promise.allSettled()函数及其用法来学习NodeJs 12.我写了下面的代码.我可以在控制台中打印状态，但由于存在编译问题，因此无法打印该值.

I am learning NodeJs 12 with Promise.allSettled() function and its usage. I have written the following code. I am able to print the status in the console but unable to print the value as it is giving compilation issue.

        const p1 = Promise.resolve(50);
        const p2 = new Promise((resolve, reject) =>
            setTimeout(reject, 100, 'geek'));
        const prm = [p1, p2];

        Promise.allSettled(prm).
        then((results) => results.forEach((result) =>
            console.log(result.status,result.value)));

我遇到以下编译问题.

I am getting the following compilation issue.

我在tsconfig.json下面提供.

I provide below the tsconfig.json.

{
  "compilerOptions": {
    "target": "es2017",
    "lib": ["es6","esnext", "dom"],
    "allowJs": true,
    "module": "commonjs",
    "moduleResolution": "node",
    "declaration": true,
    "outDir": "./lib",
    "strict": true,
    "esModuleInterop": true,
    "typeRoots": [ "./types", "./node_modules/@types"]
  },
  "include": ["src"],
  "exclude": ["**/__tests__/*"]
}

推荐答案

您可能想要这样的东西:

You might want something like this:

  Promise.allSettled(prm).
    then((results) => results.forEach(result => {
       if (result.status === 'fulfilled') {
         console.log(result.status,result.value);
       } else {
         console.log(result.status,result.reason);
       }
    });

value 仅在满足状态时存在，但不包括其中一个承诺有错误的情况.

value only exists if the status is fulfilled, but it doesn't cover cases where one of the promises had an error.

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