noAsyncPromiseExecutor

JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v1.0.0

¥Rule available since: v1.0.0
诊断类别：lint/suspicious/noAsyncPromiseExecutor

¥Diagnostic Category: lint/suspicious/noAsyncPromiseExecutor
此规则为推荐规则，默认启用。

¥This rule is recommended, which means is enabled by default.
此规则没有修复方案。

¥This rule doesn’t have a fix.
此规则的默认严重级别为 error。

¥The default severity of this rule is error.
来源：

¥Sources:
- 与 no-async-promise-executor 相同
  
  ¥Same as no-async-promise-executor

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "suspicious": {
5
        "noAsyncPromiseExecutor": "error"
6
      }
7
    }
8
  }
9
}

描述

¥Description

禁止使用异步函数作为 Promise 执行器。

¥Disallows using an async function as a Promise executor.

执行器函数也可以是异步函数。但是，这通常是一个错误，原因如下：

¥The executor function can also be an async function. However, this is usually a mistake, for a few reasons:

如果异步执行器函数抛出错误，错误将丢失，不会导致新构造的 Promise 拒绝。这可能会使调试和处理某些错误变得困难。

¥If an async executor function throws an error, the error will be lost and won’t cause the newly-constructed Promise to reject. This could make it difficult to debug and handle some errors.
如果 Promise 执行器函数正在使用 await，这通常表明实际上没有必要使用 new Promise 构造函数，或者可以缩小 new Promise 构造函数的范围。

¥If a Promise executor function is using await, this is usually a sign that it is not actually necessary to use the new Promise constructor, or the scope of the new Promise constructor can be reduced.

示例

¥Examples

无效

¥Invalid

1
new Promise(async function foo(resolve, reject) {})

code-block.js:1:13 lint/suspicious/noAsyncPromiseExecutor ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Promise executor functions should not be `async`.
  
  > 1 │ new Promise(async function foo(resolve, reject) {})
      │             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    2 │

1
  new Promise(async (resolve, reject) => {})

code-block.js:1:15 lint/suspicious/noAsyncPromiseExecutor ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Promise executor functions should not be `async`.
  
  > 1 │   new Promise(async (resolve, reject) => {})
      │               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    2 │

1
  new Promise(((((async () => {})))))

code-block.js:1:19 lint/suspicious/noAsyncPromiseExecutor ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Promise executor functions should not be `async`.
  
  > 1 │   new Promise(((((async () => {})))))
      │                   ^^^^^^^^^^^^^^
    2 │

有效

¥Valid

1
  new Promise((resolve, reject) => {})
2
  new Promise((resolve, reject) => {}, async function unrelated() {})
3
  new Foo(async (resolve, reject) => {})
4
  new Foo((( (resolve, reject) => {} )))

noAsyncPromiseExecutor

摘要

如何配置

描述

示例

无效

有效

相关链接