Source code
Revision control
Copy as Markdown
Other Tools
// Eval of new.target is invalid outside functions.
try {
eval('new.target');
assertEq(false, true);
} catch (e) {
if (!(e instanceof SyntaxError))
throw e;
}
// new.target is invalid inside eval inside top-level arrow functions
assertThrowsInstanceOf(() => eval('new.target'), SyntaxError);
// new.target is invalid inside indirect eval.
let ieval = eval;
try {
(function () { return ieval('new.target'); })();
assertEq(false, true);
} catch (e) {
if (!(e instanceof SyntaxError))
throw e;
}
function assertNewTarget(expected) {
assertEq(eval('new.target'), expected);
assertEq((()=>eval('new.target'))(), expected);
// Also test nestings "by induction"
assertEq(eval('eval("new.target")'), expected);
assertEq(eval("eval('eval(`new.target`)')"), expected);
}
const ITERATIONS = 550;
for (let i = 0; i < ITERATIONS; i++)
assertNewTarget(undefined);
for (let i = 0; i < ITERATIONS; i++)
new assertNewTarget(assertNewTarget);
if (typeof reportCompare === "function")
reportCompare(0,0,"OK");