JSTests/es6/let_temporal_dead_zone_strict_mode.js

function test() {

'use strict';
var passed = (function(){ try {  qux; } catch(e) { return true; }}());
function fn() { passed &= qux === 456; }
let qux = 456;
fn();
return passed;
      
}

if (!test())
    throw new Error("Test failed");