noCatchAssign

诊断类别：lint/suspicious/noCatchAssign

¥Diagnostic Category: lint/suspicious/noCatchAssign

JavaScript (and super languages)

自从：v1.0.0

¥Since: v1.0.0

来源：

¥Sources:

与以下相同：no-ex-assign

¥Same as: no-ex-assign

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

try {

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

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

try {

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

noCatchAssign

示例

无效

有效

相关链接