Original link: Should JavaScript be split into two languages? New Google-driven proposal divides opinion / DevClass.
Google, Mozilla and Apple proposed in ECMA TC39 (the group defining ECMAScript, which is the formal name for JavaScript) that JavaScript be split in two languages.
"JS0" with basic functionality. "JSSugar" with extended functionality. JS Engines only understands "JS0". Tools convert from "JSSugar" to "JS0".
Sound like TS JS to me. :-)
(but then I am not JS knowledgable)