They don't have to remove anything, just repeat what they did with "use strict" but make it, uhh, even stricter. Just a subset of JS which is only the good part

They don't have to remove anything, just repeat what they did with "use strict" but make it, uhh, even stricter. Just a subset of JS which is only the good parts. Actually "use strict" actually makes JS an almost good language as mistakes are immediately flagged rather than "working anyway." But strict mode doesn't go nearly far enough in my opinion. I will say for backwards compatibility you're always going to have to write "===" the only thing a flag would do is break "==" on purpose.