A Google engineer presented a proposal to the official standardization committee that would split JavaScript into two languages, a core to be implemented by runtime engines and a more capable variant which depends on tools that compile it down to that core. The presentation was at a meeting of Emca TC39 earlier this month, TC39 [https://tc39.es] being the committee of Ecma International that evolves the JavaScript (officially ECMAScript) specifiation. Shu-yu Guo, a staff software engineer at Goo...