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class Base {
constructor(o) {
return o;
}
}
class A extends Base {
#x = 12;
#y = 13;
static has(o) {
return A.evalStr(o, '#x in o');
}
static evalStr(o, str) {
return eval(str);
}
}
var obj = {};
assertEq(A.has(obj), false);
new A(obj);
assertEq(A.has(obj), true);
A.evalStr(obj, `#x in o in o`) // 'false' in o
function assertSyntaxError(functionText) {
let threw = false;
let exception = undefined;
try {
A.evalStr({}, functionText)
} catch (e) {
exception = e;
threw = true;
}
assertEq(threw, true);
assertEq(exception instanceof SyntaxError, true);
}
assertSyntaxError(`#x`);
assertSyntaxError(`#x == undefined`);
assertSyntaxError(`1 + #x in o`)
assertSyntaxError(`#z in o`);
assertSyntaxError(`for (#x in o) { return 1;}`)
assertSyntaxError(`!#x in o`)
assertSyntaxError(`+#x in o`)
assertSyntaxError(`-#x in o`)
assertSyntaxError(`~#x in o`)
assertSyntaxError(`void #x in o`)
assertSyntaxError(`typeof #x in o`)
assertSyntaxError(`++#x in o`)
assertSyntaxError(`--#x in o`)
assertSyntaxError(`#x in #y in o`)
assertSyntaxError(`{} instanceof #x in o`)
assertSyntaxError(`10 > #x in o`)
var threw = true
try {
eval(`class Async {
#x;
async func(o) {
await #x in o;
}
}`);
threw = false;
} catch (e) {
assertEq(e instanceof SyntaxError, true);
}
assertEq(threw, true);