#no-label-var

#Configuration

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

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

#Rule Details

This rule aims to create clearer code by disallowing the bad practice of creating a label that shares a name with a variable that is in scope.

Examples of incorrect code for this rule:

var x = foo;
function bar() {
x:
  for (;;) {
    break x;
  }
}

Examples of correct code for this rule:

// The variable that has the same name as the label is not in scope.

function foo() {
  var q = t;
}

function bar() {
q:
  for (;;) {
    break q;
  }
}

#Options

This rule has no options.

#Differences from ESLint

• /* global foo */ directive comments are not recognized — labels colliding with names declared only via these comments are not reported.
• On files without type information, only declarations written in the file are checked; clashes with built-in globals (Promise, Array, …) are not reported in that case.

#Original Documentation

• ESLint rule: no-label-var