// |reftest| shell-option(--enable-explicit-resource-management) skip-if(!(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('explicit-resource-management'))||!xulRuntime.shell) error:ReferenceError -- explicit-resource-management is not enabled unconditionally, requires shell-options // Copyright (C) 2023 Ron Buckton. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-declarative-environment-records-getbindingvalue-n-s description: > using: global use before initialization in prior statement. (TDZ, Temporal Dead Zone) negative: phase: runtime type: ReferenceError features: [explicit-resource-management] ---*/ { x; using x = null; }