function tst(z) {

var y;

var x1 = true;

var x2 = false;

var x3 = 0;

var x4 = 0.0;

var x5 = -0.0;

var x6 = 0.1;

var x7 = 1;

var x8 = "";

var x9 = 'a';

var xa = /a/;

var xb = {};

var xc = [];

var xd = function(){};

var xe = 1-unknown();

var xf = 1+xe;

var xg = 'a'+2;

var xh = 'a'+(unknown()?'b':0);

var xi = 2^unknown();

var xj = unknown();

var xk = new Unknown();

var xl = void(0);

var xm = typeof xj;

var xn = xj >= yk;

var xo = x9 in xk;

var xp = ++xj;

var xq = !xj;

var xr = -xj;

var xs = +xj;

var xt = ~xj;

var xu = delete xj.p;

var xv = xj -= 2;

var xw = xj += "a";

var xx = y;

var xy = arguments;

var xz = z;

var x_ = someGlobal;

}

var someGlobal = 42;

function nonstrict() {

var thiz = this;

}

function strict() {

'use strict';

var thiz = this;

}

function capturedFn() {

function captured() {}

function capturing() {

captured();

}

var neverUndefined = captured;

}

!function(x, y) {

var _x = x;

var _y = y;

}(42);

!function(...x) {

var _x = x;

}(23, 42);

!function(x) {

var _x = x;

}.apply(null, ["hi"]);

!function s(x) {

if(!x)

s(42);

var _x = x;

}();

!function(x) {

if(!x)

arguments.callee(42);

var _x = x;

}();

!function(x) {

eval("x = 'hi'");

var _x = x;

}(42);

!function(x) {

(0,eval)("x = 'hi'");

var _x = x;

}(42);

(function() {

function inner() {

var z = x;

}

var x = 23;

var y1 = x;

inner();

x = 'hi';

var y2 = x;

inner();

});

(function() {

var x = arguments;

var arguments;

})

function tst(arguments) {

var x = arguments;

}

!function() {

var x1 = function() {

return 42;

}();

var x2 = function() {

return Math.random() > 0.5 ? "hi" : null;

}();

var x3 = function(y) {

return x1;

}(x1);

var x4 = function() {}();

var x5 = function() {

if (Math.random() > 0.5)

throw new Error();

return true;

}();

var x6 = function() { throw null; }();

}

function tst2(a, b) {

var a1 = a, b1 = b;

if (!a && !b) {

var a2 = a, b2 = b;

}

if (!(a || b)) {

var a3 = a, b3 = b;

}

}

function tst3(value) {

var v1 = value;

if (value == null) {

var v2 = value;

}

}

function tst4(o) {

var x;

for (x in o) {

var x1 = x;

}

for (var y in o) {

var y1 = y;

}

for (var z of o) {

var z1 = z;

}

}

function tst5(o) {

var x1 = undefined;

var x2 = arguments.callee;

var x3 = o.callee;

if (o !== undefined) {

var x4 = o;

}

var x5 = o;

}

async function awaitFlow(){

var v;

var await1 = v;

if (y) {

v = await f()

var await2 = v;

}

var await3 = v;

}

var [someOtherGlobal] = [];

var x1 = someOtherGlobal;