eval-has-lexical-environment.js

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/*

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/

*/

var gTestfile = "eval-has-lexical-environment.js"

//-----------------------------------------------------------------------------

var BUGNUMBER = 1193583;

var summary =

  "Eval always has a lexical environment";

/**************

 * BEGIN TEST *

 **************/

eval(`

let foo = 42;

const kay = foo;

var bar = 84;

function f() {

  return foo + kay;

`);

(1, eval)(`

let foo2 = 42;

const kay2 = foo2;

`);

// Lexical declarations should not have escaped eval.

assertEq(typeof foo, "undefined");

assertEq(typeof kay, "undefined");

assertEq(typeof foo2, "undefined");

assertEq(typeof kay2, "undefined");

// Eval'd functions can close over lexical bindings.

assertEq(f(), 84);

// Var can escape direct eval.

assertEq(bar, 84);

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");