tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

bug1473272-default-constructors.js (624B)

      1 // Test the source location info in a derived-class default constructor.
      2 
      3 function W() { test(); }
      4 class Z extends W {}  // line 4
      5 class Y extends Z {}  // line 5
      6 
      7 class X extends Y {}  // line 7
      8 
      9 function test() {
     10    for (let frame of new Error().stack.split('\n')) {
     11        function lineNumber(frame) {
     12            return +frame.match(/(\d+):\d+$/)[1];
     13        }
     14 
     15        if (frame.startsWith("Z@"))
     16            assertEq(lineNumber(frame), 4);
     17        if (frame.startsWith("Y@"))
     18            assertEq(lineNumber(frame), 5);
     19        if (frame.startsWith("X@"))
     20            assertEq(lineNumber(frame), 7);
     21    }
     22 }
     23 
     24 new X;