xl-infinite-tree/src/extend.js

A browser-ready tree library that can efficiently display a large amount of data using infinite scrolling.

/* eslint no-restricted-syntax: 0 */
const extend = (target, ...sources) => {
    if (target === undefined || target === null) {
        throw new TypeError('Cannot convert undefined or null to object');
    }

    const output = Object(target);
    for (let index = 0; index < sources.length; index++) {
        const source = sources[index];
        if (source !== undefined && source !== null) {
            for (let key in source) {
                if (Object.prototype.hasOwnProperty.call(source, key)) {
                    output[key] = source[key];
                }
            }
        }
    }
    return output;
};

module.exports = extend;