swc/crates/swc_ecma_parser/tests/tsc/constructorImplementationWithDefaultValues.ts

class C {
    constructor(x);
    constructor(x = 1) {
        var y = x;
    }
}

class D<T> {
    constructor(x);
    constructor(x:T = null) {
        var y = x;
    }
}

class E<T extends Date> {
    constructor(x);
    constructor(x: T = null) {
        var y = x;
    }
}