tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Environment-scopeKind-01.js (786B)

      1 // Environment.prototype.scopeKind produces expected values.
      2 
      3 load(libdir + 'eqArrayHelper.js');
      4 
      5 var g = newGlobal({ newCompartment: true });
      6 var dbg = Debugger(g);
      7 
      8 function getScopeKinds(text) {
      9  const kinds = [];
     10  dbg.onDebuggerStatement = frame => {
     11    let env = frame.environment;
     12    while (env) {
     13      kinds.push(env.scopeKind);
     14      env = env.parent;
     15    }
     16  };
     17  g.eval(text);
     18  return kinds;
     19 }
     20 
     21 assertEqArray(getScopeKinds("function f(x) { debugger; }; f()"),
     22  ["function", "global", null]);
     23 assertEqArray(getScopeKinds("function f(x) { let y = 0; debugger; }; f()"),
     24  ["function lexical", "function", "global", null]);
     25 assertEqArray(getScopeKinds("function f(x) { let y = 0; with(x) { debugger; } } f({})"),
     26  [null, "function lexical", "function", "global", null]);