tor-browser

The Tor Browser
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global-block-decl-eval-global-skip-early-err-block.js (1243B)


      1 // This file was procedurally generated from the following sources:
      2 // - src/annex-b-fns/eval-global-skip-early-err-block.case
      3 // - src/annex-b-fns/eval-global/indirect-block.template
      4 /*---
      5 description: Extension not observed when creation of variable binding would produce an early error (Block statement) (Block statement in eval code containing a function declaration)
      6 esid: sec-web-compat-evaldeclarationinstantiation
      7 flags: [generated, noStrict]
      8 info: |
      9    B.3.3.3 Changes to EvalDeclarationInstantiation
     10 
     11    [...]
     12    ii. If replacing the FunctionDeclaration f with a VariableStatement that
     13        has F as a BindingIdentifier would not produce any Early Errors for
     14        body, then
     15    [...]
     16 ---*/
     17 assert.throws(ReferenceError, function() {
     18  f;
     19 }, 'An initialized binding is not created prior to evaluation');
     20 assert.sameValue(
     21  typeof f,
     22  'undefined',
     23  'An uninitialized binding is not created prior to evaluation'
     24 );
     25 
     26 (0,eval)(
     27  '{\
     28  let f = 123;{ function f() {  } }}'
     29 );
     30 
     31 assert.throws(ReferenceError, function() {
     32  f;
     33 }, 'An initialized binding is not created following evaluation');
     34 assert.sameValue(
     35  typeof f,
     36  'undefined',
     37  'An uninitialized binding is not created following evaluation'
     38 );
     39 
     40 reportCompare(0, 0);