@splidejs/splide/src/js/utils/array/includes/includes.ts

Splide is a lightweight, flexible and accessible slider/carousel. No dependencies, no Lighthouse errors.

/**
 * Checks if the array includes the value or not.
 * `Array#includes` is not supported by IE.
 *
 * @param array - An array.
 * @param value - A value to search for.
 *
 * @return `true` if the array includes the value, or otherwise `false`.
 */
export function includes<T>( array: T[], value: T ): boolean {
  return array.indexOf( value ) > -1;
}