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noUselessLabel

Diagnostic Category: lint/complexity/noUselessLabel

JavaScript (and super languages)

Since: v1.0.0

Sources:

Same as: no-extra-label

Description

Disallow unnecessary labels.

If a loop contains no nested loops or switches, labeling the loop is unnecessary.

Examples

Invalid

loop: while(a) {
    break loop;
}

code-block.js:2:11 lint/complexity/noUselessLabel  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Unnecessary label.
  
    1 │ loop: while(a) {
  > 2 │     break loop;
      │           ^^^^
    3 │ }
    4 │ 
  
  ℹ Safe fix: Remove the unnecessary label.
    You can achieve the same result without the label.
  
    2 │ ····break·loop;
      │          -----

Valid

outer: while(a) {
    while(b) {
        break outer;
    }
}

How to configure

{
  "linter": {
    "rules": {
      "complexity": {
        "noUselessLabel": "error"
      }
    }
  }
}