@splidejs/svelte-splide/utils/isEqualDeep/isEqualDeep.js

Svelte component for the Splide slider/carousel.

import { isObject } from '../isObject/isObject';
/**
 * Checks if provided two arrays are shallowly equal or not.
 *
 * @param subject1 - An array to test.
 * @param subject2 - Anther array to test.
 *
 * @return `true` if they are considered as equal, or otherwise `false`.
 */
export function isEqualDeep(subject1, subject2) {
    if (Array.isArray(subject1) && Array.isArray(subject2)) {
        return subject1.length === subject2.length
            && !subject1.some((elm, index) => !isEqualDeep(elm, subject2[index]));
    }
    if (isObject(subject1) && isObject(subject2)) {
        const keys1 = Object.keys(subject1);
        const keys2 = Object.keys(subject2);
        return keys1.length === keys2.length && !keys1.some(key => {
            return !Object.prototype.hasOwnProperty.call(subject2, key)
                || !isEqualDeep(subject1[key], subject2[key]);
        });
    }
    return subject1 === subject2;
}