Full error: xengine.js:2 Uncaught SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
HTML goes on like this (up to relevant moment):
Sorry for not putting this into code tags. I have issue with copying with Ctrl+V and the pop-up doesn't support the pasting in right-click menu.
I have been Googling for answers, but they involved frameworks. I don't use any. This error occurs both on Opera and Chrome, and I think that it will occur in every other browser. Any idea on how solve this?
Have I just found a bug, or my environment is screwed up?