no-useless-length-check.md

Pattern: Redundant array length check with every/some

Issue: -

Description

Using array length checks with array.every() or array.some() is unnecessary since these methods already handle empty arrays appropriately - every() returns true and some() returns false for empty arrays.

Examples

Example of incorrect code:

if (array.length === 0 || array.every(Boolean)) {
  // do something
}

if (array.length > 0 && array.some(Boolean)) {
  // do something  
}

Example of correct code:

if (array.every(Boolean)) {
  // do something
}

if (array.some(Boolean)) {
  // do something
}