tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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block-decl-func-existing-fn-update.js (1332B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/annex-b-fns/func-existing-fn-update.case
      3 // - src/annex-b-fns/func/block.template
      4 /*---
      5 description: Variable-scoped binding is updated following evaluation (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    3. When the FunctionDeclaration f is evaluated, perform the following steps
     13       in place of the FunctionDeclaration Evaluation algorithm provided in
     14       14.1.21:
     15       a. Let fenv be the running execution context's VariableEnvironment.
     16       b. Let fenvRec be fenv's EnvironmentRecord.
     17       c. Let benv be the running execution context's LexicalEnvironment.
     18       d. Let benvRec be benv's EnvironmentRecord.
     19       e. Let fobj be ! benvRec.GetBindingValue(F, false).
     20       f. Perform ! fenvRec.SetMutableBinding(F, fobj, false).
     21       g. Return NormalCompletion(empty). 
     22 ---*/
     23 var after;
     24 
     25 (function() {
     26  
     27 
     28  {
     29    function f() { return 'inner declaration'; }
     30  }
     31 
     32  after = f;
     33 
     34  function f() {
     35    return 'outer declaration';
     36  }
     37 }());
     38 
     39 assert.sameValue(typeof after, 'function');
     40 assert.sameValue(after(), 'inner declaration');
     41 
     42 reportCompare(0, 0);