north-america-area-codes

getRegion.js

var NorthAmerica=require('./NorthAmerica.json');
var fp = require('lodash/fp');

function getRegionForAreaCode(areaCode){
			return fp.findKey(function(o) {
				return o.includes(areaCode);
				})(NorthAmerica);
			}

saveList.js

var tabletojson = require('tabletojson');
var fp=require('lodash/fp');
var fs=require('fs');

var wikiArrayToObj = fp.flow(
	fp.map(fp.values)
	,fp.fromPairs
	);

function saveNorthAmericaCodes(){
	var url = 'https://en.wikipedia.org/wiki/List_of_North_American_Numbering_Plan_area_codes#United_States';
	return tabletojson.convertUrl(url)
	.then(function(tablesAsJson) {
		return tablesAsJson[0].concat(tablesAsJson[1]);
		})
	.then(wikiArrayToObj)
	.then(function(data){
		console.log(data)
		fs.writeFile(__dirname+'/NorthAmerica.json', JSON.stringify(data));
		})
	};

saveNorthAmericaCodes();