stdin.txt

Hello,

As part of recent ES6 compliance efforts, the semantics of the `let`
keyword have changed[1] in a non-backwards-compatible way which
affects one or more of your add-ons. In particular:

1) Variables may no longer be declared more than once in the same
scope using the `let` keyword, and may not be redeclared using the
`let` keyword if they have already been declared using `var`, or as
a function argument, within the same lexical scope.

This means that, as of Firefox 35, none of the following are
acceptable:

   function f(foo) {
	let foo;
   }

   {
	let foo;
	let foo = y;
   }

   {
	let foo;
	var foo;
   }

2) Variables declared using the `let` keyword may no longer be
referenced before the `let` statement which binds them has executed.
This means that the following will no longer work:

    {
        x = 4;
        let x;
    }

    switch (2) {
    case 1:
        let x = 'foo';
    case 2:
        x = 'bar';
    }

You are receiving this email because the following %(addon)s fall
awry of the first class of new restrictions in the following
%(file)s. Note that the second class of errors are only detectable
%during runtime, and may exist in other files or addons.

%(addon_list)s

Thanks,
The Mozilla Add-ons Team

[1] https://bugzil.la/1001090

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