| let foo = {}; |
| let properties = []; |
| let p = new Proxy(foo, { get:(target, property) => { |
| properties.push(property.toString()); |
| if (property === Symbol.toStringTag) |
| return "bad things"; |
| return target[property]; |
| }}); |
| |
| for (i = 0; i < 5; i++) { |
| if (p != "[object bad things]") |
| throw new Error("bad toString result."); |
| |
| if (properties[0] !== "Symbol(Symbol.toPrimitive)" || properties[1] !== "valueOf" || properties[2] !== "toString" || properties[3] !== "Symbol(Symbol.toStringTag)") |
| throw new Error("bad property accesses."); |
| |
| properties = []; |
| } |
| |
| p = createProxy(foo); |
| |
| for (i = 0; i < 5; i++) { |
| let str = "bad things" + i; |
| foo[Symbol.toStringTag] = str; |
| if (p != "[object " + str + "]") |
| throw new Error("bad toString result."); |
| } |