noCatchAssign

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/noCatchAssign

¥Diagnostic Category: lint/suspicious/noCatchAssign
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 warning。

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

¥Sources:
- 与 no-ex-assign 相同
  
  ¥Same as no-ex-assign

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "suspicious": {
5
        "noCatchAssign": "error"
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      }
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    }
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  }
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}

描述

¥Description

禁止在 catch 子句中重新分配异常。

¥Disallow reassigning exceptions in catch clauses.

分配给 catch 参数可能会产生误导和混淆。这通常是无意的，并且表明程序员犯了错误。

¥Assignment to a catch parameter can be misleading and confusing. It is often unintended and indicative of a programmer error.

示例

¥Examples

无效

¥Invalid

1
try {
2

3
} catch (e) {
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  e;
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  e = 10;
6
}

code-block.js:5:3 lint/suspicious/noCatchAssign ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ⚠ Reassigning a catch parameter is confusing.
  
    3 │ } catch (e) {
    4 │   e;
  > 5 │   e = 10;
      │   ^
    6 │ }
    7 │ 
  
  ℹ The catch parameter is declared here:
  
    1 │ try {
    2 │ 
  > 3 │ } catch (e) {
      │          ^
    4 │   e;
    5 │   e = 10;
  
  ℹ Use a local variable instead.

有效

¥Valid

1
try {
2

3
} catch (e) {
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  let e = 10;
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  e = 100;
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}

noCatchAssign

摘要

如何配置

描述

示例

无效

有效

相关链接