No Loop Iterable Mutation

Error

small-rules/no-loop-iterable-mutation

Disallow mutating a loop iterable during iteration.

Diagnostic Messages

noLoopIterableMutation

Do not mutate `{{iterable}}` while iterating over it.

Configuration

This rule does not accept options.

{
  "jsPlugins": [
    "@pobammer-ts/small-rules"
  ],
  "rules": {
    "small-rules/no-loop-iterable-mutation": "error"
  }
}

Examples

Mutating iterable during for-of

for (const item of items) {
  items.push(item.clone());
}

Snapshot loop is safe

for (const item of [...items]) {
  items.push(item.clone());
}