tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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es6-syntax.js (1020B)

      1 // Test interactions between ES6 generators and not-yet-standard
      2 // features.
      3 
      4 function assertSyntaxError(str) {
      5    var msg;
      6    var evil = eval;
      7    try {
      8        // Non-direct eval.
      9        evil(str);
     10    } catch (exc) {
     11        if (exc instanceof SyntaxError)
     12            return;
     13        msg = "Assertion failed: expected SyntaxError, got " + exc;
     14    }
     15    if (msg === undefined)
     16        msg = "Assertion failed: expected SyntaxError, but no exception thrown";
     17    throw new Error(msg + " - " + str);
     18 }
     19 
     20 // Destructuring binding.
     21 assertSyntaxError("function* f(x = yield) {}");
     22 assertSyntaxError("function* f(x = yield 17) {}");
     23 assertSyntaxError("function* f([yield]) {}");
     24 assertSyntaxError("function* f({ yield }) {}");
     25 assertSyntaxError("function* f(...yield) {}");
     26 
     27 // For each.
     28 assertSyntaxError("for yield");
     29 assertSyntaxError("for yield (;;) {}");
     30 assertSyntaxError("for yield (x of y) {}");
     31 assertSyntaxError("for yield (var i in o) {}");
     32 
     33 // Expression bodies.
     34 assertSyntaxError("function* f() yield 7");