#no-useless-catch

#Configuration

import { defineConfig, js } from '@rslint/core';

export default defineConfig([
  js.configs.recommended,
  {
    rules: {
      'no-useless-catch': 'error',
    },
  },
]);

#Rule Details

Disallows catch clauses that only rethrow the caught error. 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 is better to disallow them.

Examples of incorrect code for this rule:

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

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

Examples of correct code for this rule:

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

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

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

#Original Documentation

• ESLint: no-useless-catch
• Source code