block scope + direct non-strict eval
Andy Wingo
wingo at igalia.com
Tue Jan 31 06:30:01 PST 2012
Hello ecmascriptians,
I hear that TC39 wants to allow let and const into "classic mode". This
sounds like a bad idea to me, but, ok.
If so, can someone say what these expressions would evaluate to, or the
errors they would raise:
(function (){eval("let x = 10"); return x;})()
(function (){var x = 20; eval("let x = 10"); return x;})()
(function (){let x = 20; eval("let x = 10"); return x;})()
(function (){let x = 20; { eval("let x = 10"); return x;}})()
(function (){let x = 20; eval("var x = 10"); return x;})()
(function (){ { let x = 20; { eval("let x = 10"); return x;}}})()
As Leibniz would have it, let us calculate.
Andy
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