prefer-includes.md

Pattern: Use of indexOf() for existence check

Issue: -

Description

The includes() method provides a more readable and less error-prone way to check for element existence compared to using indexOf() !== -1 checks. All built-in types that have indexOf() also support includes().

Examples

Example of incorrect code:

if (str.indexOf("foo") !== -1) {
}

Example of correct code:

if (str.includes("foo")) {
}