1.5 in Android stock browser: Uncaught SyntaxError: Use of const in strict mode

Hi all!
Can anyone confirm errors (white screen) in default android browser after 1.5 upgrade?

Uncaught SyntaxError: Use of const in strict mode
Uncaught TypeError: Cannot read property 'meteorInstall' of undefined
Cannot read property 'Random' of undefined
...so on

ES6/7 modules are always in strict mode, so it’s not needed in ES6/7.

and what’s next?
I have one single file with strict, that does not contain any const,
all googled issues like this solved by upgrade node version,
furthermore this error happened in default android browser at least,
what do you advise?

The problem is localized, the cause of the problem is Meteor-Files package