swc/crates/swc_ecma_parser/tests/tsc/privateNamesConstructorChain-1.ts

// @target: es2015

class Parent {
    #foo = 3;
    static #bar = 5;
    accessChildProps() {
        new Child().#foo; // OK (`#foo` was added when `Parent`'s constructor was called on `child`)
        Child.#bar;       // Error: not found
    }
}

class Child extends Parent {
    #foo = "foo";       // OK (Child's #foo does not conflict, as `Parent`'s `#foo` is not accessible)
    #bar = "bar";       // OK
}