Installation

npm install json-compressor-for-csv

Usage

Step 1: Initialization

const compressor = require('json-compressor-for-csv'); 

compressor.compress({
    list: _uncompressed,    // ARRAY only
    splitter : "-" // default "-"
   }, function (jsv) {
  	     console.log("Compressed " + JSON.stringify(jsv, 0, 2));
 });

Exemples

Exemple 1

    let _uncompressed = [{
            "firstName": "andrea",
            "lastName": "giglio",
            "games": [
                {
                    "id": 0,
                    "code": "A"
                }]
        }];

Compressed

{
	"partials": [
	    {
	      "firstName": "andrea",
	      "lastName": "giglio",
	      "games-id": 0,
	      "games-code": "A"
	    }
	  ],
	 "allKeys": [
	    "firstName",
	    "lastName",
	    "games-id",
	    "games-code"
	  ]
}

Exemple 2

let _uncompressed = [
{
    "firstName": "luca",
    "lastName": "medici",
    "games": [
        {
            "id": 0,
            "code": "H",
            "actions": [
                {
                    "id": 0,
                    "code": "I"
			    }] 
        }]
},{
    "firstName": "andrea",
    "lastName": "giglio",
    "games": [
        {
            "id": 0,
            "code": "A"
		},
        {
            "id": 1,
            "code": "B",
            "numer": 7
		},
        {
            "id": 2,
            "code": "C",
            "actions": [
                {
                    "id": 0,
                    "code": "I",
                    "numer": 8
			    }]
        }]
}];

Compressed

{
	"partials": [
	    {
	      "firstName": "luca",
	      "lastName": "medici",
	      "games-id": 0,
	      "games-code": "H",
	      "games-actions-id": 0,
	      "games-actions-code": "I"
	    },
	    {
	      "firstName": "andrea",
	      "lastName": "giglio",
	      "games-id": 0,
	      "games-code": "A"
	    },
	    {
	      "firstName": "andrea",
	      "lastName": "giglio",
	      "games-id": 1,
	      "games-code": "B",
	      "games-numer": 7
	    },
	    {
	      "firstName": "andrea",
	      "lastName": "giglio",
	      "games-id": 2,
	      "games-code": "C",
	      "games-actions-id": 0,
	      "games-actions-code": "I",
	      "games-actions-numer": 8
	    }
	  ],
	  "allKeys": [
	    "firstName",
	    "lastName",
	    "games-id",
	    "games-code",
	    "games-actions-id",
	    "games-actions-code",
	    "games-numer",
	    "games-actions-numer"
	  ]
}

Export to CSV

You can convert the compressed json using json2csv

npm install json-compressor-for-csv
npm install json2csv

const compressor = require('json-compressor-for-csv'),
	json2csv = require('json2csv');
	
compressor.compress({
        list: _uncompressed
    }, function (jsv) {
        //console.log("COMPRESSED", jsv);
        json2csv({
                data: JSON.parse(JSON.stringify(jsv.partials)),
                fields: jsv.allKeys,
                del: ';'
            },
            function (err, csv) {
                //console.log("CSV", csv);
            });
    });

Tests

> node test/test.js

TODO - BUGS

> Refactory
> Fix Bug for 2nd level nested array
> @ DELIMITER will be set generic value