no-useless-catch

禁止不必要的 catch 条款

✅

在配置文件中使用来自 @eslint/js 的 recommended 配置可以启用此规则

只重新抛出原始错误的 catch 子句是多余的，对程序的运行时行为没有影响。这些多余的子句可能会造成混乱和代码膨胀，因此最好禁止这些不必要的 catch 子句。

¥A catch clause that only rethrows the original error is redundant, and has no effect on the runtime behavior of the program. These redundant clauses can be a source of confusion and code bloat, so it’s better to disallow these unnecessary catch clauses.

规则详情

¥Rule Details

此规则报告 catch 子句，只有 throw 捕获错误。

¥This rule reports catch clauses that only throw the caught error.

此规则的错误代码示例：

¥Examples of incorrect code for this rule:

在线运行

/*eslint no-useless-catch: "error"*/

try {
  doSomethingThatMightThrow();
} catch (e) {
  throw e;
}

try {
  doSomethingThatMightThrow();
} catch (e) {
  throw e;
} finally {
  cleanUp();
}
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此规则的正确代码示例：

¥Examples of correct code for this rule:

在线运行

/*eslint no-useless-catch: "error"*/

try {
  doSomethingThatMightThrow();
} catch (e) {
  doSomethingBeforeRethrow();
  throw e;
}

try {
  doSomethingThatMightThrow();
} catch (e) {
  handleError(e);
}

try {
  doSomethingThatMightThrow();
} finally {
  cleanUp();
}
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何时不使用

¥When Not To Use It

如果你不想收到有关不必要的 catch 子句的通知，你可以安全地禁用此规则。

¥If you don’t want to be notified about unnecessary catch clauses, you can safely disable this rule.

版本

此规则是在 ESLint v5.11.0 中引入。

no-useless-catch

规则详情

何时不使用

版本

资源