tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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bug1671563.js (439B)

      1 // The value of a `var` on entering a function is `undefined`, even if a
      2 // default expression uses the same stack slot for something else.
      3 
      4 load(libdir + "asserts.js");
      5 
      6 function f(a = class C{}) {
      7  var x;
      8  return x;
      9 }
     10 assertEq(f(), undefined);
     11 
     12 function* g1(a = class C {}) {
     13  var x;
     14  assertEq(x, undefined);
     15 }
     16 g1().next();
     17 
     18 function* g2(a = class C {}) {
     19  x;
     20  let x;
     21 }
     22 assertThrowsInstanceOf(() => g2().next(), ReferenceError);