tor-browser

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

block-decl-func-skip-early-err-try.js (1763B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/annex-b-fns/func-skip-early-err-try.case
      3 // - src/annex-b-fns/func/block.template
      4 /*---
      5 description: Extension is observed when creation of variable binding would not produce an early error (try statement) (Block statement in function scope containing a function declaration)
      6 esid: sec-web-compat-functiondeclarationinstantiation
      7 flags: [generated, noStrict]
      8 info: |
      9    B.3.3.1 Changes to FunctionDeclarationInstantiation
     10 
     11    [...]
     12    2. If instantiatedVarNames does not contain F, then
     13       a. Perform ! varEnvRec.CreateMutableBinding(F, false).
     14       b. Perform varEnvRec.InitializeBinding(F, undefined).
     15       c. Append F to instantiatedVarNames.
     16    [...]
     17 
     18    B.3.5 VariableStatements in Catch Blocks
     19 
     20    [...]
     21    - It is a Syntax Error if any element of the BoundNames of CatchParameter
     22      also occurs in the VarDeclaredNames of Block unless CatchParameter is
     23      CatchParameter:BindingIdentifier and that element is only bound by a
     24      VariableStatement, the VariableDeclarationList of a for statement, or the
     25      ForBinding of a for-in statement.
     26 ---*/
     27 
     28 (function() {
     29  assert.throws(ReferenceError, function() {
     30    f;
     31  }, 'An initialized binding is not created prior to evaluation');
     32  assert.sameValue(
     33    typeof f,
     34    'undefined',
     35    'An uninitialized binding is not created prior to evaluation'
     36  );
     37 
     38  try {
     39    throw {};
     40  } catch ({ f }) {
     41 
     42  {
     43    function f() {  }
     44  }
     45 
     46  }
     47 
     48  assert.throws(ReferenceError, function() {
     49    f;
     50  }, 'An initialized binding is not created following evaluation');
     51  assert.sameValue(
     52    typeof f,
     53    'undefined',
     54    'An uninitialized binding is not created following evaluation'
     55  );
     56 }());
     57 
     58 reportCompare(0, 0);