gskachkov

var foo = async function*() {};

typeof foo;
// "function"
foo.toString();
// "async function* () {}"

foo[Symbol.toStringTag];
// "AsyncFunction"

gskachkov

Promise.resolve(1)
       .then(value => { console.log('fulfill:', value); return 'new value'; })
       .finally(value => { console.log('finally:', value); });
// fulfill: 1
// finally: new value

gskachkov

const getValue = () => { console.log('get-value'); return 'value'; };

async function* foo(value = getValue()) {
  console.log('before yield', value);
  yield value + '-yiled';
  
  console.log('after yield');
  return value + '-result';
}

gskachkov

var all = items => Promise.all(items); 

async function asyncRandomNumbers() {
  const response = await fetch('https://www.random.org/decimal-fractions/?num=1&dec=10&col=1&format=plain&rnd=new');
  return Number(await response.text());
}

async function getUsers(count) {
  const response = await fetch("https://randomuser.me/api/?results=10", { method: "GET" }); 
  return JSON.parse(await response.text());

gskachkov

async function asyncRandomNumbers() {
  const response = await fetch('https://www.random.org/decimal-fractions/?num=1&dec=10&col=1&format=plain&rnd=new');
  return Number(await response.text());
}

async function getUsers(count) {
  const response = await fetch("https://randomuser.me/api/?results=10", { method: "GET" }); 
  return JSON.parse(await response.text());
};

gskachkov

var asyncThrow = async () => { throw new Error('Rejected-value') };
var reject = async () => Promise.reject('Rejected-value');

var foo = async () => { 
  try {
    await asyncThrow();
  } catch (e) { 
    console.log('Catched error:', e); 
  }
  try { 

gskachkov

async function getResponseSize(url) {
  const response = await fetch(url);
  const reader = response.body.getReader();
  let total = 0;

  while (true) {
    const {done, value} = await reader.read();
    if (done) return total;
    total += value.length;
  }

gskachkov

const importObject = {
  imports: {
    foo: arg => {
      console.log('Imported value from WASM', arg);
    }
  }
};

gskachkov

var assertNotThrow = function (cb) {
    var noError = false;
    try {
        cb();
        noError = true;
    } catch (e) {}
    return noError;
}
function f() {   
    var foo; 

gskachkov

async function asyncFoo(i) {
  return Promise.resolve(i);
}

async function main() {
  console.log(`Start`);
  const start = Date.now()

  let total = 0
  for (let i = 0;i < 550000; i++) {