promises

Douglas Crockford's Google Tech Talk explains monads without category theory or Haskell, implementing them in JavaScript and tying them to Ajax and promises. He also touches on odd asides such as coloring code by scope.

Anders Hejlsberg introduces the native port of the TypeScript compiler, written in Go, which promises roughly 10x faster tooling. He demos compiling VS Code and explains where the speedup comes from.

Tom Scott performs a fictional story at GeekyConf about the day Google accidentally stops checking passwords, letting anyone into any account. It works as a parable about how a single point of failure in login can unravel everything built on it.