UPDATE 08/2018: Binaryen no longer supports s2wasm and the official "wasm32-unknown-unknown-wasm"target is now stable enough to use via llc and lld. See the footnotes for more info. To be clear, this article is intended for people who are writing their own compiler in Rust and want to use LLVM as…

EDIT: 11/2017 — This post was originally published 04/2016. Yehuda Katz now has a WHATWG proposal for “DOMChangeLists”, which has a very similar spirit to the behavior of Node#mergeWith() described later in this post, though it wasn’t inspired by this post. LazyDOM — an experiment to bring virtual DOM to the browser natively tl;dr React-style virtual elements are fast but cannot be…

Now that feature list for ES2016 aka ES7 is out, and doesn’t actually include any of the features most people talk about, it’s officially time to just stop using ES7 to mean “any proposed feature that may or may not even make it”. Let’s first define a couple things: ES…