// Copyright (C) 2019 Leo Balter. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- description: > CoalesceExpression is chainable with the LogicalANDExpression is any is covered. esid: sec-conditional-operator info: | ConditionalExpression : ShortCircuitExpression ShortCircuitExpression ? AssignmentExpression : AssignmentExpression ShortCircuitExpression : LogicalORExpression CoalesceExpression CoalesceExpression : CoalesceExpressionHead ?? BitwiseORExpression CoalesceExpressionHead : CoalesceExpression BitwiseORExpression Runtime Semantics: Evaluation CoalesceExpression:CoalesceExpressionHead??BitwiseORExpression 1. Let lref be the result of evaluating CoalesceExpressionHead. 2. Let lval be ? GetValue(lref). 3. If lval is undefined or null, a. Let rref be the result of evaluating BitwiseORExpression. b. Return ? GetValue(rref). 4. Otherwise, return lval. features: [coalesce-expression] ---*/ var x; x = undefined; x = (null ?? 41) && 42; assert.sameValue(x, 42, '(null ?? 41) && 42'); x = undefined; x = null ?? (41 && 42); assert.sameValue(x, 42, 'null ?? (41 && 42)`'); x = undefined; x = (41 && 42) ?? null; assert.sameValue(x, 42, '(41 && 42) ?? null'); x = undefined; x = 41 && (null ?? 42); assert.sameValue(x, 42, '41 && (null ?? 42)`'); reportCompare(0, 0);