remove-duplicates.js

/**
 * remove duplicates from array object with specific key
 * @param arr
 * @param key
 * @return {Array.<T>|*}
 */
export function removeDuplicates(arr, key) {
    return arr.filter((obj, index, arr) => {
        return arr.map(mapObj => {
                return mapObj[key]
            }).indexOf(obj[key]) === index;
    });
}