tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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if-stmt-else-decl-func-skip-param.js (1490B)


      1 // This file was procedurally generated from the following sources:
      2 // - src/annex-b-fns/func-skip-param.case
      3 // - src/annex-b-fns/func/if-stmt-else-decl.template
      4 /*---
      5 description: Extension not observed when there is a formal parameter with the same name (IfStatement with a declaration in the second statement position in function scope)
      6 esid: sec-functiondeclarations-in-ifstatement-statement-clauses
      7 flags: [generated, noStrict]
      8 info: |
      9    The following rules for IfStatement augment those in 13.6:
     10 
     11    IfStatement[Yield, Return]:
     12        if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else Statement[?Yield, ?Return]
     13        if ( Expression[In, ?Yield] ) Statement[?Yield, ?Return] else FunctionDeclaration[?Yield]
     14        if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else FunctionDeclaration[?Yield]
     15        if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield]
     16 
     17 
     18    B.3.3.1 Changes to FunctionDeclarationInstantiation
     19 
     20    [...]
     21    ii. If replacing the FunctionDeclaration f with a VariableStatement that
     22        has F as a BindingIdentifier would not produce any Early Errors for
     23        func and F is not an element of BoundNames of argumentsList, then
     24    [...]
     25 ---*/
     26 var init, after;
     27 
     28 (function(f) {
     29  init = f;
     30 
     31  if (false) ; else function f() {  }
     32 
     33  after = f;
     34 }(123));
     35 
     36 assert.sameValue(init, 123, 'binding is not initialized to `undefined`');
     37 assert.sameValue(after, 123, 'value is not updated following evaluation');
     38 
     39 reportCompare(0, 0);