Creating a CSV file with Node & JS object - MiguelFieira/AMO-HANDBOEK GitHub Wiki

For now i don't have a lot of fukkin time so here is the goddamn code you lazy fucks

/**
 * A simple forEach() implementation for Arrays, Objects and NodeLists
 * @private
 * @param {Array|Object|NodeList} collection Collection of items to iterate
 * @param {Function} callback Callback function for each iteration
 * @param {Array|Object|NodeList} scope Object/NodeList/Array that forEach is iterating over (aka `this`)
 */
var forEach = function (collection, callback, scope) {
	if (Object.prototype.toString.call(collection) === '[object Object]') {
		for (var prop in collection) {
			if (Object.prototype.hasOwnProperty.call(collection, prop)) {
				callback.call(scope, collection[prop], prop, collection);
			}
		}
	} else {
		for (var i = 0, len = collection.length; i < len; i++) {
			callback.call(scope, collection[i], i, collection);
		}
	}
};

const admin = require('firebase-admin');

let serviceAccount = require('./firebase-admin.json');

admin.initializeApp({
  credential: admin.credential.cert(serviceAccount)
});

let db = admin.firestore();         // Firestore connection
const fse = require('fs-extra');    // Filewriter functionalities
const file = 'oof.csv';             // Name of file to be created
let i = 0;                          // Iteration count for foreach loop
let data = {};                      // Object to push data into
let string = '"name","phone",\n';   // String to contain titles for the CSV file

// -------------------------------------------------
db.collection('environment').doc('VxwMiZ1QSMbOe73OdCF4').collection('contact').get()    // The JSON where you get your data from
  .then((snapshot) => {
        snapshot.forEach((doc) => {
            let info = doc.data();                              // Collect data (this part is only for firebase + node method)
            data[i] = {name: info.name, phone: info.phone};     // Store only your neccesary data from the json in an pre-defined object
            i++;                                                // Aad iteration to loop
        })
    })
    .then(() => {                                               // When all data is collected. If you have a single js object, you can start here
        forEach(data, (value, index) => {
            string = string + '"' + value.name +'","'+value.phone+'",\n';   // Append data to the string with correct titles in the beginning
        })
    })
    .then(() => {                       // When string is complete
        fse.outputFile(file, string);   // Use FS to create the CSV file
    })
    .catch((err) => {
        console.log('Error getting documents', err);
    });

Make it work yourself, this is very specific code. Figure it out