#no-ex-assign

#Configuration

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

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

#Rule Details

Disallow assign another value to the exception parameter a catch clause in a try statement accidentally or purposely. Since there is no arguments object to offer alternative access to this data, assignment of the parameter is absolutely destructive.

Examples of correct code for this rule:

try {
} catch (e) {
  three = 2 + 1;
}
try {
} catch ({ e }) {
  this.something = 2;
}
function foo() {
  try {
  } catch (e) {
    return false;
  }
}

Examples of incorrect code for this rule:

try {
} catch (e) {
  e = 10;
}
try {
} catch (ex) {
  ex = 10;
}
try {
} catch (ex) {
  [ex] = [];
}
try {
} catch (ex) {
  ({ x: ex = 0 } = {});
}
try {
} catch ({ message }) {
  message = 10;
}

#Original Documentation

https://eslint.org/docs/latest/rules/no-ex-assign