merge-jsons is a Node.js module, which provides 3 functions, isJSON ,removeDuplicateJSON and mergeJSON.

installation and usage

npm install merge-jsons

import { mergeJSON, removeDuplicateJSON , isJSON } from "merge-jsons";

merging of JSON objects

let obj1 = {a:true, b:false} ;
let obj2 = {b:true, c:12345} ;
let result = mergeJSON(obj1, obj2) ;
console.log(result) ;
// Object {a: true, b: true, c: 12345}

When using merge consider, that the second parameter is dominant. Keys from the second parameter, already existing in the first parameter override these. If both keys contain JSON objects a merge is performed.

removing duplicate JSON objects

const arrays = [{id: 1, name: "sravan ganji"}, {id: 2, name: "anu"},{id: 4, name: "mammu"}, {id: 3, name: "sanju"},{id: 3, name: "ram"},{id: 1, name: "sravan ganji"}
,{id: 2, name: "anu"},{id: 4, name: "mammus"},{id: 4, name: "sanju"},{id: 3, name: "ram"}];
removeDuplicateJSON(arrays)
//[ { id: 1, name: 'sravan ganji' }, { id: 2, name: 'anu' }, { id: 4, name: 'mammu' }, { id: 3, name: 'sanju' }, { id: 3, name: 'ram' }, { id: 4, name: 'mammus' }, { id: 4, name: 'sanju' } ]

testing for JSON objects

let obj = {a:123, b:456} ;
let num = 123 ;
let str = "hello world!" ;
let date = new Date() ;

isJSON(obj) ;
// true

isJSON(num) ;
// false

isJSON(str) ;
// false

// note difference to typeof!
typeof date === "object"
// true
isJSON(date) ;
// false

The function returns true, when the given parameter is a JSON object. I it is no JSON object it returns false. For JavaScript objects, that are not pure JSON objects it also returns false.