ppd-utils/lib/merge.js

utils

const { isObject } = require("./type");

function merge(target, source) {
    let output = Object.assign({}, target || source);
    if (isObject(target) && isObject(source)) {
        Object.keys(source).forEach(key => {
            if (isObject(source[key])) {
                if (!(key in target))
                    Object.assign(output, { [key]: source[key] });
                else
                    output[key] = merge(target[key], source[key]);
            } else {
                Object.assign(output, { [key]: source[key] });
            }
        });
    }
    return output;
}

module.exports = merge;