spread-obj-overrides-prev-properties.js (1378B)
1 // This file was procedurally generated from the following sources: 2 // - src/spread/obj-overrides-prev-properties.case 3 // - src/spread/default/call-expr.template 4 /*--- 5 description: Object Spread properties overrides previous definitions (CallExpression) 6 esid: sec-function-calls-runtime-semantics-evaluation 7 features: [object-spread] 8 flags: [generated] 9 info: | 10 CallExpression : MemberExpression Arguments 11 12 [...] 13 9. Return EvaluateDirectCall(func, thisValue, Arguments, tailCall). 14 15 12.3.4.3 Runtime Semantics: EvaluateDirectCall 16 17 1. Let argList be ArgumentListEvaluation(arguments). 18 [...] 19 6. Let result be Call(func, thisValue, argList). 20 [...] 21 22 Pending Runtime Semantics: PropertyDefinitionEvaluation 23 24 PropertyDefinition:...AssignmentExpression 25 26 1. Let exprValue be the result of evaluating AssignmentExpression. 27 2. Let fromValue be GetValue(exprValue). 28 3. ReturnIfAbrupt(fromValue). 29 4. Let excludedNames be a new empty List. 30 5. Return CopyDataProperties(object, fromValue, excludedNames). 31 32 ---*/ 33 let o = {a: 2, b: 3}; 34 35 36 var callCount = 0; 37 38 (function(obj) { 39 assert.sameValue(obj.a, 2); 40 assert.sameValue(obj.b, 3); 41 assert.sameValue(Object.keys(obj).length, 2); 42 assert.sameValue(o.a, 2); 43 assert.sameValue(o.b, 3); 44 callCount += 1; 45 }({a: 1, b: 7, ...o})); 46 47 assert.sameValue(callCount, 1); 48 49 reportCompare(0, 0);