tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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dflt-obj-ptrn-rest-skip-non-enumerable.js (1936B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/obj-ptrn-rest-skip-non-enumerable.case
      3 // - src/dstr-binding/default/func-decl-dflt.template
      4 /*---
      5 description: Rest object doesn't contain non-enumerable properties (function declaration (default parameter))
      6 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
      7 features: [object-rest, destructuring-binding, default-parameters]
      8 flags: [generated]
      9 includes: [propertyHelper.js]
     10 info: |
     11    FunctionDeclaration :
     12        function BindingIdentifier ( FormalParameters ) { FunctionBody }
     13 
     14        [...]
     15        3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody,
     16           scope, strict).
     17        [...]
     18 
     19    9.2.1 [[Call]] ( thisArgument, argumentsList)
     20 
     21    [...]
     22    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     23    [...]
     24 
     25    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     26 
     27    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     28    [...]
     29 
     30    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     31 
     32    [...]
     33    23. Let iteratorRecord be Record {[[iterator]]:
     34        CreateListIterator(argumentsList), [[done]]: false}.
     35    24. If hasDuplicates is true, then
     36        [...]
     37    25. Else,
     38        b. Let formalStatus be IteratorBindingInitialization for formals with
     39           iteratorRecord and env as arguments.
     40    [...]
     41 ---*/
     42 var o = {a: 3, b: 4};
     43 Object.defineProperty(o, "x", { value: 4, enumerable: false });
     44 
     45 var callCount = 0;
     46 function f({...rest} = o) {
     47  assert.sameValue(rest.x, undefined);
     48 
     49  verifyProperty(rest, "a", {
     50    enumerable: true,
     51    writable: true,
     52    configurable: true,
     53    value: 3
     54  });
     55 
     56  verifyProperty(rest, "b", {
     57    enumerable: true,
     58    writable: true,
     59    configurable: true,
     60    value: 4
     61  });
     62  callCount = callCount + 1;
     63 };
     64 f();
     65 assert.sameValue(callCount, 1, 'function invoked exactly once');
     66 
     67 reportCompare(0, 0);