velotio-tech

'use strict';

exports.handler = (event, context, callback) => {
    // when intent get fulfilled, inform lex to complete the state
    let response = {sessionAttributes: event.sessionAttributes,
      dialogAction: {
        type: "Close",
        fulfillmentState: "Fulfilled",
        message: {
          contentType: "PlainText",

velotio-tech

'use strict';
exports.handler = (event, context, callback) => {
    const sessionAttributes = event.sessionAttributes;
    const slots = event.currentIntent.slots;
    const bookName = slots.bookName;
  
    // predefined list of available books
    const validBooks = ['harry potter', 'twilight', 'wings of fire'];
  
    // negative check: if valid slot value is not obtained, inform lex that user is expected 

velotio-tech

async fooBarBaz(arg) {
  try {
  const fooResponse = await foo(arg+1);
  const barResponse = await bar(arg+2);
  const bazResponse = await baz(arg+3);

  return bazResponse;
  } catch (error) {
    return Error(error);
  }

velotio-tech

async function asyncFun() {
  try {
    const result = await promise;
  } catch(error) {
    console.log(error);
  }
}

velotio-tech

function foo(arg, callback) {
  if (arg < 0) {
    callback('error');
    return;
  }
  callback(null, arg+1);
}

function bar(arg, callback) {
  if (arg < 0) {

velotio-tech

var foo = function (arg) {
     return new Promise((resolve, reject) => {
          resolve(arg+1);
     });
}

var bar = function (arg) {
     return new Promise((resolve, reject) => {
          resolve(arg+2);
     });

velotio-tech

var fileReadPromise = fs.readFile(filePath);
fileReadPromise.then(console.log, console.error)

velotio-tech

fs.readFile(filePath, (err, result) => {
     if (err) { console.log(err); }
     console.log(data);
});

velotio-tech

foo(arg, (err, val) => {
     if (err) {
          console.log(err);
     } else {
          val += 1;
          bar(val, (err1, val1) => {
               if (err) {
                    console.log(err1);
               } else {
                    val1 += 2;