tor-browser

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

global-if-decl-else-stmt-eval-global-skip-early-err.js (1409B)


      1 // This file was procedurally generated from the following sources:
      2 // - src/annex-b-fns/eval-global-skip-early-err.case
      3 // - src/annex-b-fns/eval-global/direct-if-decl-else-stmt.template
      4 /*---
      5 description: Extension not observed when creation of variable binding would produce an early error (IfStatement with a declaration in the first statement position in eval code)
      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.3.3.3 Changes to EvalDeclarationInstantiation
     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        body, then
     24    [...]
     25 ---*/
     26 
     27 eval(
     28  'let f = 123;\
     29  assert.sameValue(f, 123, "binding is not initialized to `undefined`");if (true) function f() {  } else ;assert.sameValue(f, 123, "value is not updated following evaluation");'
     30 );
     31 
     32 reportCompare(0, 0);