| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-init-iter-get-err-array-prototype.case |
| // - src/dstr-binding/error/gen-func-decl-dflt.template |
| /*--- |
| description: Abrupt completion returned by GetIterator (generator function declaration (default parameter)) |
| esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject |
| features: [Symbol.iterator, generators, destructuring-binding, default-parameters] |
| flags: [generated] |
| info: | |
| GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody } |
| |
| [...] |
| 2. Let F be GeneratorFunctionCreate(Normal, FormalParameters, |
| GeneratorBody, scope, strict). |
| [...] |
| |
| 9.2.1 [[Call]] ( thisArgument, argumentsList) |
| |
| [...] |
| 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). |
| [...] |
| |
| 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) |
| |
| 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). |
| [...] |
| |
| 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) |
| |
| [...] |
| 23. Let iteratorRecord be Record {[[iterator]]: |
| CreateListIterator(argumentsList), [[done]]: false}. |
| 24. If hasDuplicates is true, then |
| [...] |
| 25. Else, |
| b. Let formalStatus be IteratorBindingInitialization for formals with |
| iteratorRecord and env as arguments. |
| [...] |
| |
| Runtime Semantics: BindingInitialization |
| |
| BindingPattern : ArrayBindingPattern |
| |
| 1. Let iteratorRecord be ? GetIterator(value). |
| |
| GetIterator ( obj [ , hint [ , method ] ] ) |
| |
| [...] |
| 4. Let iterator be ? Call(method, obj). |
| |
| Call ( F, V [ , argumentsList ] ) |
| |
| [...] |
| 2. If IsCallable(F) is false, throw a TypeError exception. |
| |
| ---*/ |
| delete Array.prototype[Symbol.iterator]; |
| |
| function* f([x, y, z] = [1, 2, 3]) {} |
| |
| assert.throws(TypeError, function() { |
| f(); |
| }); |