Filter out empty properties from the object

removeEmptyProps.js

/**
 * Helper to filter out the empty properties(null, undefined, [], or '') from the given object
 *
 * @param {{}} obj
 * @returns {{}}
 */
 const removeEmptyProps = (obj) => {
    return Object.keys(obj)
                 // remove params that are empty
                 .filter(key => {
                     const emptyArray = (Array.isArray(obj[key]) && obj[key].length === 0);
                     const emptyVal = (obj[key] === '' || obj[key] === null || obj[key] === undefined);

                     return ! (emptyArray || emptyVal);
                 })
                 // create the filtered object
                 .reduce((acc, key) => { acc[key] = obj[key]; return acc; }, {});
};