domenic

"use strict";

var pending = { then: function () {} };

// operation must accept as its first argument a cancel token
// if your operation does not support cancelation, use a shim:
// last((_, ...args) => realOp(...args));
module.exports = operation => {
    let latestPromise = null;
    let previousCancel = null;

domenic

function xhrAdapted(url, { cancelToken } = {}) {
  const xhr = new XMLHttpRequest();
  return new Promise((resolve, reject, cancel) => {
    xhr.addEventListener("load", () => resolve(xhr.responseText));
    xhr.addEventListener("error", () => reject(new Error("could not XHR")));
    
    if (!cancelToken) return;
    cancelToken.promise.then(reason => {
      cancel(reason);
      xhr.abort();

domenic

// This does not work at all, for unknown reasons:
let catch = macro {
  case {
    try {
      $tryBody ...
    } $name ($exception:ident) {
      $catchBody ...
    }
  } => {
    return #{

domenic

[Constructor(optional unrestricted double x = 0, optional unrestricted double y = 0,
             optional unrestricted double z = 0, optional unrestricted double w = 1),
 Exposed=(Window,Worker)]
interface DOMPointReadOnly {
    [NewObject] static DOMPointReadOnly fromPoint(optional DOMPointInit other);

    readonly attribute unrestricted double x;
    readonly attribute unrestricted double y;
    readonly attribute unrestricted double z;
    readonly attribute unrestricted double w;

domenic

[Exposed=Window]
interface CharacterData : Node {
  attribute [TreatNullAs=EmptyString] DOMString data;
  readonly attribute unsigned long length;
  DOMString substringData(unsigned long offset, unsigned long count);
  void appendData(DOMString data);
  void insertData(unsigned long offset, DOMString data);
  void deleteData(unsigned long offset, unsigned long count);
  void replaceData(unsigned long offset, unsigned long count, DOMString data);
};

domenic

Blockers from me using it full time:

• Rulers (multiple are necessary for me)
• Support for setting LF as default, not CRLF (editorconfig is not sufficient, and VS's editorconfig is missing that feature anyway)
• Reveal in sidebar functionality for the current file, with a keyboard shortcut

Nice to have:

• Ctrl+mousewheel zoom
• Portable version

domenic

// es6a.js

await foo(); // takes 10 milliseconds

require('./y.js');

// es6b.js

domenic

// Dynamic module loading using runtime-composed strings, decisions, etc.

for (const m of ["cool", "awesome", "fun", "whee"]) {
  if (Math.random() > 0.5) {
    importModule(`/js/${m}.js`).then(
      module => console.log("Module instance object for " + m, module),
      e => console.error(e)
    );
  }
}

domenic

// ES6

class AngularPromise extends Promise {
    constructor(executor) {
        super((resolve, reject) => {
            // before
            return executor(resolve, reject);
        });
        // after
    }

domenic

function getUserDetail(username) {
  if (userCache[username]) {
    return Promise.resolve(userCache[username]);
  }

  // Use the fetch API to get the information
  return fetch('users/' + username + '.json')
    .then(function(result) {
      userCache[username] = result;
      return result;