#JSON-Merge

This programs compares JSON objects and prints out a diff as a first step in an arbitartion and QA workflow for double blind data collection. The diff object contains copies of the original objects and a template designed to hold the eventual result of the manual QA.

Installation

$ git clone https://github.com/owenscott/json-merge
$ npm install

var merge = require('./json-merge');

Example 1

Comparing two objects with one matching value and one non-matching value.

var example1 = [
	{
		foo:'bar',
		something:'value'
	},
	{
		foo:'bar',
		something:'different value'
	}
]

merge (example1, function(err, res) {
	console.log(res);
})

//result:
//
// { a: { foo: 'bar', something: 'value' },
//   b: { foo: 'bar', something: 'different value' },
// 	merge : {
// 		foo : {
// 			match : true,
// 			source : 'MATCH',
// 			value : 'bar',
// 			cleanValue : '',
// 			deleted : false
// 		},
// 		something : {
// 			match : false,
// 			source : '',
// 			value : '',
// 			cleanValue : '',
// 			deleted : false
// 		}
// 	}
// }

Example 2

Comparing two objects which contain an array inside one of the key-value pairs.

var example2 = [
	{
		foo:'bar',
		something:[1,2,3,4,5]
	},
	{
		foo:'bar',
		something:[1,4]
	}
]

merge (example2, function(err, res) {
	console.log(res);
})

//result:
//
// {
// 	"a" : {
// 		"foo" : "bar",
// 		"something" : [1, 2, 3, 4, 5]
// 	},
// 	"b" : {
// 		"foo" : "bar",
// 		"something" : [1, 4]
// 	},
// 	"merge" : {
// 		"foo" : {
// 			"match" : true,
// 			"source" : "MATCH",
// 			"value" : "bar",
// 			"cleanValue" : "",
// 			"deleted" : false
// 		}
// 	},
// 	"arrays" : {
// 		"something" : {
// 			"merge" : [{
// 					"match" : true,
// 					"source" : "MATCH",
// 					"value" : 1,
// 					"cleanValue" : "",
// 					"deleted" : false
// 				}, {
// 					"match" : true,
// 					"source" : "MATCH",
// 					"value" : 4,
// 					"cleanValue" : "",
// 					"deleted" : false
// 				}
// 			],
// 			"a" : [2, 3, 5],
// 			"b" : []
// 		}
// 	}
// }