Rich-Harris

Edit — February 2019

This gist had a far larger impact than I imagined it would, and apparently people are still finding it, so a quick update:

• TC39 is currently moving forward with a slightly different version of TLA, referred to as 'variant B', in which a module with TLA doesn't block sibling execution. This vastly reduces the danger of parallelizable work happening in serial and thereby delaying startup, which was the concern that motivated me to write this gist
• In the wild, we're seeing (async main(){...}()) as a substitute for TLA. This completely eliminates the blocking problem (yay!) but it's less powerful, and harder to statically analyse (boo). In other words the lack of TLA is causing real problems
• Therefore, a version of TLA that solves the original issue is a valuable addition to the language, and I'm in full support of the current proposal, which you can read here.

I'll leave the rest of this document unedited, for archaeological

atdt

#!/usr/bin/env bash
file_pattern='*.js'      # Which files to consider
v1="php-1.28.0-wmf.18"   # Base branch
v2="php-1.28.0-wmf.17"   # Target branch
while IFS= read -r a; do
  b="${a/$v1/$v2}"
  diff -u "$a" "$b"      # Change '-u' to '-q' if you only want
                         # to list which files have changed.
done < <(find "/srv/mediawiki/${v1}" -name "$file_pattern")

Rich-Harris

Non-deterministic module ordering is an even bigger footgun

Update – in the comments below, @bmeck clarifies that statically imported modules do evaluate in a deterministic sequential order, contra the Hacker News comments that prompted this gist.

Another follow-up to Top-level await is a footgun. On the Hacker News comments, Domenic says this:

(The argument also seems to be predicated on some fundamental misunderstandings, in that it thinks everything would have to be sequentialized. See my other replies throughout this thread.)

In other words, if you have an app like this...

PaulKinlan

function monitorEvents(element) {
  var log = function(e) { console.log(e);};
  var events = [];
  
  for(var i in element) {
    if(i.startsWith("on")) events.push(i.substr(2));
  }
  events.forEach(function(eventName) { 
    element.addEventListener(eventName, log); 
  }); 

tonyonodi

// This is my solution to the "Little JavaScript Problem" from http://lisperator.net/blog/a-little-javascript-problem/
// Apparently this means Mihai Bazon will hire me... Woo!

var pair = (head, tail) => (f => f(head, tail))
var car = (pair) => pair((head, tail) => head)
var cdr = (pair) => pair((head, tail) => tail)
var range = (min, max) => pair(min, min == max ? null : range(min + 1, max))
var map = (list, func) => pair(func(car(list)), cdr(list) === null ? null : map(cdr(list), func))
var reverse = (list, newList=null) => list === null ? newList : reverse(cdr(list),pair(car(list), newList))
var foreach = (list, func) => list === null ? null : (func(car(list)), foreach(cdr(list), func))

aryzhov

CoreTeam: &CoreTeam
  Characters:
    - Mario
    - Luigi

ExtendedTeam: &ExtendedTeam
  <<: *CoreTeam
  Characters+:
    - Princess Peach
    - Yoshi

chrisveness

/**
 * Encrypts plaintext using AES-GCM with supplied password, for decryption with aesGcmDecrypt().
 *                                                                      (c) Chris Veness MIT Licence
 *
 * @param   {String} plaintext - Plaintext to be encrypted.
 * @param   {String} password - Password to use to encrypt plaintext.
 * @returns {String} Encrypted ciphertext.
 *
 * @example
 *   const ciphertext = await aesGcmEncrypt('my secret text', 'pw');

potatoqualitee

h1.public strong a {
    color: #4078C0;
}

a.subnav-item.js-subnav-item.selected {
    background-color: #4078C0;
}

svg.octicon.octicon-file-directory path {
    color: #4078C0;

libitte

warning: ignoring broken ref refs/remotes/origin/HEAD

➜   ✗ g symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/develop
➜   ✗ g fetch --prune
➜   ✗ g gc

tomtorggler

---
# Requires Front Matter
---
{"items":[{% for post in site.posts %}{
  "title": {{post.title | jsonify}},
  "url": {{ post.url | prepend: site.baseurl | prepend: site.url | jsonify }},
  "date": {{ post.date | date: '%B %-d, %Y' | jsonify }},
  "category": {{ post.category | jsonify }},
  "tags": {{ post.tags | jsonify }},
  "author": {{ post.author | jsonify }},