// This file was procedurally generated from the following sources: // - src/dstr-assignment/array-rest-nested-obj-undefined-hole.case // - src/dstr-assignment/default/for-of.template /*--- description: When DestructuringAssignmentTarget is an array literal and the iterable is an array with a "hole", an array with a single `undefined` element should be used as the value of the nested DestructuringAssignment. (For..of statement) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [destructuring-binding] flags: [generated] info: | IterationStatement : for ( LeftHandSideExpression of AssignmentExpression ) Statement 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », AssignmentExpression, iterate). 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, keyResult, assignment, labelSet). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 4. If destructuring is true and if lhsKind is assignment, then a. Assert: lhs is a LeftHandSideExpression. b. Let assignmentPattern be the parse of the source text corresponding to lhs using AssignmentPattern as the goal symbol. [...] ---*/ var x = null; // Use the the top-level lexical scope for 'length' to provide compatibility with browsers // where length and name are properties of WindowProxy let length; var counter = 0; for ([...{ 0: x, length }] of [[ , ]]) { assert.sameValue(x, undefined); assert.sameValue(length, 1); counter += 1; } assert.sameValue(counter, 1); reportCompare(0, 0);