prefer-set-size.md

Pattern: Array conversion to get Set size

Issue: -

Description

Converting a Set to an array just to get its length is unnecessary and less performant. The Set class provides a direct size property that should be used instead.

Examples

Example of incorrect code:

const length = [...new Set([1, 2, 3])].length;

Example of correct code:

const size = new Set([1, 2, 3]).size;