us_autocomplete_pro.js

const SmartySDK = require("smartystreets-javascript-sdk");
const SmartyCore = SmartySDK.core;
const Lookup = SmartySDK.usAutocompletePro.Lookup;

// for Server-to-server requests, use this code:
// let authId = process.env.SMARTY_AUTH_ID;
// let authToken = process.env.SMARTY_AUTH_TOKEN;
// const credentials = new SmartyCore.StaticCredentials(authId, authToken);

// for client-side requests (browser/mobile), use this code:
let key = process.env.SMARTY_EMBEDDED_KEY;
const credentials = new SmartyCore.SharedCredentials(key);

// The appropriate license values to be used for your subscriptions
// can be found on the Subscription page of the account dashboard.
// https://www.smarty.com/docs/cloud/licensing
let clientBuilder = new SmartyCore.ClientBuilder(credentials).withLicenses(["us-autocomplete-pro-cloud"]);
	// .withBaseUrl("YOUR URL") // withBaseUrl() should be used if you are self-hosting the Smarty API

let client = clientBuilder.buildUsAutocompleteProClient();

// Documentation for input fields can be found at:
// https://www.smarty.com/docs/cloud/us-autocomplete-api#pro-http-request-input-fields

// *** Simple Lookup ***
let lookup = new Lookup("4770 Lincoln");
// uncomment the following line to add a custom parameter
// lookup.addCustomParameter("max_results", 3);

await handleRequest(lookup, "Simple Lookup");

// *** Using Filter and Prefer ***
lookup = new Lookup("4770 Lincoln");

lookup.maxResults = 10;
lookup.includeOnlyCities = ["Chicago,La Grange,IL", "Blaine,WA"];
lookup.preferStates = ["IL"];
lookup.preferRatio = 33;
lookup.source = "all";

await handleRequest(lookup, "Using Filter and Prefer");

// *** Using 'selected' to Expand Secondaries ***
lookup = new Lookup("4770 Lincoln");

lookup.selected = "4770 N Lincoln Ave Ste 2 (3) Chicago, IL 60625";

await handleRequest(lookup, "Using 'selected' to Expand Secondaries")

// ************************************************

function logSuggestions(response, message) {
	console.log(message);
	console.log(response.result);
	console.log("*********************");
}

async function handleRequest(lookup, lookupType) {
	try {
		const results = await client.send(lookup);
		logSuggestions(results, lookupType);
	} catch(err) {
		console.log(err)
	}
}