/a.js(3,4): error TS6133: 'V' is declared but its value is never read.
/a.js(13,4): error TS6205: All type parameters are unused
/a.js(20,16): error TS6133: 'V' is declared but its value is never read.
/a.js(20,18): error TS6133: 'X' is declared but its value is never read.


==== /a.js (4 errors) ====
    /**
     * @template T
     * @template V
       ~~~~~~~~~~~
!!! error TS6133: 'V' is declared but its value is never read.
     */
    class C1 {
        constructor() {
            /** @type {T} */
            this.p;
        }
    }
    
    /**
     * @template T,V
       ~~~~~~~~~~~~~
!!! error TS6205: All type parameters are unused
     */
    class C2 {
        constructor() { }
    }
    
    /**
     * @template T,V,X
                   ~
!!! error TS6133: 'V' is declared but its value is never read.
                     ~
!!! error TS6133: 'X' is declared but its value is never read.
     */
    class C3 {
        constructor() {
            /** @type {T} */
            this.p;
        }
    }