Compare custom report type fields between salesforce orgs

index.js

/**
** when you do an org-to-org migration it can be handy to know what 
** fields are different between the orgs for a given report type
*/

const jsforce = require('jsforce')
var extend = require('util')._extend

async function run () {
	var sourceConn = new jsforce.Connection({/*TODO*/})
	var destConn =  new jsforce.Connection({/*TODO*/})

	var left = await sourceConn.requestGet('/services/data/v39.0/analytics/reportTypes/My_Report_Type__c')
	var right = await destConn.requestGet('/services/data/v39.0/analytics/reportTypes/My_Report_Type__c')

	var leftColumns =  Object.keys(left.reportTypeMetadata.categories.reduce((a, b) => extend(a, b.columns), {}))
	var rightColumns = Object.keys(right.reportTypeMetadata.categories.reduce((a, b) => extend(a, b.columns), {}))

	console.log('right missing: ', leftColumns.filter(x => !rightColumns.includes(x)) )
	console.log('left missing: ', rightColumns.filter(x => !leftColumns.includes(x)) )	

}