Removed Functions

In v3, we decided to remove some functions that do not make more sense in the current context. Here is the list of removed functions:

• Promise.await
• Fibers
• Meteor.wrapAsync

TIP

These functions were only available in the server-side.

Promise.await

It is no longer necessary, you can use await directly in your code.

// Before

function someFunction() {
  const result = Promise.await(someAsyncFunction());
  return result;
}

// After

async function someFunction() {
  const result = await someAsyncFunction();
  return result;
}

Fibers

Fibers are no longer necessary, you can use async/await directly in your code.

// Before
const Future = Npm.require('fibers/future');

function someFunction() {
  const future = new Future();
  someAsyncFunction((error, result) => {
    if (error) {
      future.throw(error);
    } else {
      future.return(result);
    }
  });
  return future.wait();
}

// After

async function someFunction() {
  return new Promise((resolve, reject) => {
    someAsyncFunction((error, result) => {
      if (error) {
        reject(error);
      } else {
        resolve(result);
      }
    });
  });
}

Meteor.wrapAsync

It is no longer necessary, you can use async/await directly in your code.

// Before

const wrappedFunction = Meteor.wrapAsync(someAsyncFunction);

function someFunction() {
  const result = wrappedFunction();
  return result;
}

// After

async function someFunction() {
  const result = await someAsyncFunction();
  return result;
}

For a full list of changes check the changelog for Meteor v3