Typescript，自动等待所有Promise返回函数调用 [英] Typescript, auto await all Promise-returning function calls

问题描述

我正在使用异步"功能，有时我忘记为内部通话添加等待":

I am using "async" function and sometimes I am forgetting to add "await" for calls inside:

async function doThreeSteps () => {
    await firstPromiseReturningFunc();
    nonAsyncFunction();
    secondPromiseReturningFunc(); //Error here! Need to wait until this call resolves
    someOtherStepWhichReliesOnSuccessfullEndingOfPreviousFunction();
}

因为TS知道每个函数返回的类型是诺言还是值，所以TypeScript应该警告此类错误.我想让TS对此类情况发出警告.有可能吗?

It should be possible for TypeScript to warn about such error because TS knows what type does each function returns, is it promise or value. I'd like to make TS to warn me about such cases. Is it possible?

推荐答案

TSLint( https://github.com/palantir/tslint )具有无浮动承诺"规则.它要求使用从.then，.catch，await，赋值或返回之类的函数返回的Promise完成某事.

TSLint (https://github.com/palantir/tslint) has the "no-floating-promises" rule. It requires that something be done with a Promise returned from a function such as .then, .catch, await, assignment or return.

对此还有一个TypeScript问题: https://github.com/Microsoft/TypeScript/issues/13376

There's also a TypeScript issue for this: https://github.com/Microsoft/TypeScript/issues/13376

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