ladybird/Libraries/LibJS/Tests/parser-unary-associativity.js

load("test-common.js");

try {
  var o = {};
  o.a = 1;

  assert(o.a === 1);
  assert(!o.a === false);
  assert(!o.a === !o.a);
  assert(~o.a === ~o.a);
  assert(+o.a === +o.a);
  assert(-o.a === -o.a);

  assert((typeof "x" === "string") === true);
  assert(!(typeof "x" === "string") === false);

  console.log("PASS");
} catch (e) {
  console.log("FAIL: " + e);
}