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object-tools.js
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object-tools.js
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"use strict";
var ObjectTools = (function(){
function isPlainObject(value){
if(typeof(value) !== "object" || value === null){
return false;
}
if(value.nodeType){
return false;
}
if(value.constructor && !Object.prototype.hasOwnProperty.call(value.constructor.prototype, "isPrototypeOf" )){
return false;
}
return true;
}
function extend() {
var target = arguments[0] || {};
var sources = Array.prototype.slice.call(arguments, 1);
for(var i = 0; i < sources.length; i++){
var source = sources[i];
for (var prop in source) {
if (isPlainObject(source[prop])) {
target[prop] = extend(target[prop], source[prop]);
} else {
target[prop] = source[prop];
}
}
}
return target;
}
function extendIgnoreEmpties() {
var target = arguments[0] || {};
var sources = Array.prototype.slice.call(arguments, 1);
for(var i = 0; i < sources.length; i++){
var source = sources[i];
for (var prop in source) {
if (isPlainObject(source[prop])) {
target[prop] = extend(target[prop], source[prop]);
} else if(source[prop] !== undefined && source[prop] !== null && source[prop] !== ""){
target[prop] = source[prop];
}
}
}
return target;
}
function promiseStub(){
return new Promise(function(resolve, reject){
resolve();
});
}
//Takes object of form { a : [], b : [], c : [] } and converts to [{a, b, c},...]
function unpivot(pivotObject){
var maxLength = 0;
for(let key in pivotObject){
maxLength = Math.max(pivotObject[key].length, maxLength);
}
var unpivotObjs = [];
for(let i = 0; i < maxLength; i++){
var unpivotObj = {};
for(let key in pivotObject){
if(pivotObject[key][i]){
unpivotObj[key] = pivotObject[key][i];
}
}
unpivotObjs.push(unpivotObj);
}
return unpivotObjs;
}
function searchMap(map, key){
for(var currentKey in map){
if(currentKey == key){
return map[key];
}
}
return null;
}
function isEmpty(obj){
if(Array.isArray(obj)) {
return obj.length === 0;
}else if(typeof(obj) === "object"){
var size = 0;
for(var key in obj){
if(obj.hasOwnProperty(key)){
size++;
}
}
return size === 0;
}
}
function shallowClone(obj){
var newObject = {};
for(var key in obj){
newObject[key] = obj[key];
}
return newObject;
}
function clone(obj) {
if(Array.isArray(obj)){
var temp = [];
for (var i = 0; i < obj.length; i++) {
temp.push(clone(obj[i]));
}
return temp;
}
if(typeof(obj) === "object" && obj !== null){
var temp = {};
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
temp[key] = clone(obj[key]);
}
}
return temp;
}
return obj;
}
function objectToArray(object, keyProp){
var array = [];
for(var key in object){
var newObject = shallowClone(object[key]);
if(keyProp){
newObject[keyProp] = key;
}
array.push(newObject);
}
return array;
}
function objectToOrderedArray(object, keyOrder){
return array.map(x => object[x]);
}
function access(obj, accessor){
if(!obj || !accessor){
return null;
}
var keys = accessor.split(".");
var prop = obj;
for(var i = 0; i < keys.length; i++){
if(keys[i] !== undefined && keys[i] !== ""){
if(prop !== null && prop[keys[i]] !== undefined){
prop = prop[keys[i]];
}else{
return null;
}
}
}
return prop;
}
function diff(oldObject, newObject){
var diffObject;
if(typeof(oldObject) === "object"){
diffObject = {};
for(var key in oldObject){
diffObject[key] = diff(oldObject[key], newObject[key]);
if(!diffObject[key]){
delete diffObject[key];
}
}
if(isEmpty(diffObject)){
return null;
}
return diffObject;
}else if(Array.isArray(oldObject)){
diffObject = [];
var largest = oldObject.length > newObject.length ? oldObject.length : newObject.length;
for(var i = 0; i < oldObject.length; i++){
diffObject[i] = diff(oldObject[i], newObject[i]);
}
if(isEmpty(diffObject)) return null;
return diffObject;
}else{
if(oldObject == newObject){
return null;
}else{
if(!oldObject && newObject){
return newObject;
}else if(!newObject && oldObject){
return oldObject;
}else{
return null;
}
}
}
}
function objectIsSuperset(objectTest, objectControl){
if(objectTest instanceof Array && objectControl instanceof Array){
for(var i = 0; i < objectControl.length; i++){
if(!objectIsSuperset(objectTest[key], objectControl[key])){
return false;
}
}
}else if(objectTest instanceof Object && objectControl instanceof Object){
for(var key in objectControl){
if(!objectIsSuperset(objectTest[key], objectControl[key])){
return false;
}
}
}else{
if(objectTest != objectControl){
return false;
}
}
return true;
}
function cleanObject(obj){
for(var key in obj){
if(!obj[key]){
delete obj[key];
}
}
return obj;
}
function trimObject(obj){
var newObj = {};
for(var key in obj){
if(obj[key] !== undefined){
newObj[key] = obj[key];
}
}
return newObj;
}
return {
isPlainObject : isPlainObject,
extend : extend,
extendIgnoreEmpties : extendIgnoreEmpties,
promiseStub : promiseStub,
searchMap : searchMap,
isEmpty : isEmpty,
shallowClone : shallowClone,
clone : clone,
objectToArray : objectToArray,
access : access,
diff : diff,
objectIsSuperset : objectIsSuperset,
cleanObject : cleanObject,
trimObject : trimObject
};
})();