// This file was procedurally generated from the following sources: // - src/dstr-binding/ary-ptrn-rest-ary-elem.case // - src/dstr-binding/default/arrow-function.template /*--- description: Rest element containing an array BindingElementList pattern (arrow function expression) esid: sec-arrow-function-definitions-runtime-semantics-evaluation es6id: 14.2.16 features: [destructuring-binding] flags: [generated] info: | ArrowFunction : ArrowParameters => ConciseBody [...] 4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, 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. [...] 13.3.3.6 Runtime Semantics: IteratorBindingInitialization BindingRestElement : ... BindingPattern 1. Let A be ArrayCreate(0). [...] 3. Repeat [...] b. If iteratorRecord.[[done]] is true, then i. Return the result of performing BindingInitialization of BindingPattern with A and environment as the arguments. [...] 13.3.3.6 Runtime Semantics: IteratorBindingInitialization SingleNameBinding : BindingIdentifier Initializeropt [...] 4. If iteratorRecord.[[done]] is false, then a. Let next be IteratorStep(iteratorRecord.[[iterator]]). b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. c. ReturnIfAbrupt(next). d. If next is false, set iteratorRecord.[[done]] to true. e. Else, [...] i. Let v be IteratorValue(next). ii. If v is an abrupt completion, set iteratorRecord.[[done]] to true. iii. ReturnIfAbrupt(v). 5. If iteratorRecord.[[done]] is true, let v be undefined. [...] 8. Return InitializeReferencedBinding(lhs, v). ---*/ var callCount = 0; var f; f = ([...[x, y, z]]) => { assert.sameValue(x, 3); assert.sameValue(y, 4); assert.sameValue(z, 5); callCount = callCount + 1; }; f([3, 4, 5]); assert.sameValue(callCount, 1, 'arrow function invoked exactly once');