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function checkErr(f) {
assertThrowsInstanceOfWithMessage(f, ReferenceError,
"must call super constructor before using 'this' in derived class constructor");
}
class TestNormal extends class {} {
constructor() { this; }
}
checkErr(() => new TestNormal());
class TestEval extends class {} {
constructor() { eval("this") }
}
checkErr(() => new TestEval());
class TestNestedEval extends class {} {
constructor() { eval("eval('this')") }
}
checkErr(() => new TestNestedEval());
checkErr(() => {
new class extends class {} {
constructor() { eval("this") }
}
});
class TestArrow extends class {} {
constructor() { (() => this)(); }
}
checkErr(() => new TestArrow());
class TestArrowEval extends class {} {
constructor() { (() => eval("this"))(); }
}
checkErr(() => new TestArrowEval());
class TestEvalArrow extends class {} {
constructor() { eval("(() => this)()"); }
}
checkErr(() => new TestEvalArrow());
class TestTypeOf extends class {} {
constructor() { eval("typeof this"); }
}
checkErr(() => new TestTypeOf());
if (typeof reportCompare === 'function')
reportCompare(0, 0);