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// |reftest| skip-if(!xulRuntime.shell)
function testNewTarget() {
// new.target is currently valid inside any non-arrow, non-generator function
assertInFunctionExpr("new.target", newTarget());
// even with gratuitous whitespace.
assertInFunctionExpr(`new.
target`, newTarget());
// invalid in top-level scripts
assertError("new.target", SyntaxError);
// valid in arrow functions inside functions
assertInFunctionExpr("()=>new.target", arrowExpr([], newTarget()));
assertError("(() => new.target))", SyntaxError);
// valid in generators, too!
assertStmt("function *foo() { new.target; }", genFunDecl("es6", ident("foo"), [],
blockStmt([exprStmt(newTarget())])));
// new.target is a member expression. You should be able to call, invoke, or
// access properties of it.
assertInFunctionExpr("new.target.foo", dotExpr(newTarget(), ident("foo")));
assertInFunctionExpr("new.target[\"foo\"]", memExpr(newTarget(), literal("foo")));
assertInFunctionExpr("new.target()", callExpr(newTarget(), []));
assertInFunctionExpr("new new.target()", newExpr(newTarget(), []));
// assignment to newTarget is an error
assertError("new.target = 4", SyntaxError);
// only new.target is a valid production, no shorn names or other names
assertError("new.", SyntaxError);
assertError("new.foo", SyntaxError);
assertError("new.targe", SyntaxError);
// obj.new.target is still a member expression
assertExpr("obj.new.target", dotExpr(dotExpr(ident("obj"), ident("new")), ident("target")));
}
runtest(testNewTarget);
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