@stringsync/vexml/dist/esm/util/object.js

MusicXML to Vexflow

/** Checks if a value is a plain JavaScript object (POJO). */
export function isPOJO(value) {
    if (value === null || typeof value !== 'object') {
        return false;
    }
    return Object.getPrototypeOf(value) === Object.prototype;
}
/** Deeply clones a plain JavaScript object. */
export function deepClone(object) {
    if (Array.isArray(object)) {
        return object.map((value) => (isPOJO(value) ? deepClone(value) : value));
    }
    const result = {};
    for (const [key, value] of Object.entries(object)) {
        result[key] = isPOJO(value) || Array.isArray(value) ? deepClone(value) : value;
    }
    return result;
}
/** Deeply checks if two plain JavaScript objects are equal. */
export function isEqual(obj1, obj2) {
    // Check if both objects are null or undefined
    if (obj1 === null || obj1 === undefined || obj2 === null || obj2 === undefined) {
        return obj1 === obj2;
    }
    // Check if both objects are of the same type
    if (typeof obj1 !== typeof obj2) {
        return false;
    }
    // Check if both objects are arrays
    if (Array.isArray(obj1) && Array.isArray(obj2)) {
        if (obj1.length !== obj2.length) {
            return false;
        }
        for (let i = 0; i < obj1.length; i++) {
            if (!isEqual(obj1[i], obj2[i])) {
                return false;
            }
        }
        return true;
    }
    // Check if both objects are objects
    if (typeof obj1 === 'object' && typeof obj2 === 'object') {
        const keys1 = Object.keys(obj1);
        const keys2 = Object.keys(obj2);
        if (keys1.length !== keys2.length) {
            return false;
        }
        for (const key of keys1) {
            if (!isEqual(obj1[key], obj2[key])) {
                return false;
            }
        }
        return true;
    }
    // Check if both objects are primitive values
    return obj1 === obj2;
}