error TS5107: Option 'module=AMD' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
typeParameterCompatibilityAccrossDeclarations.ts(2,31): error TS2322: Type 'null' is not assignable to type 'T'.
  'T' could be instantiated with an arbitrary type which could be unrelated to 'null'.
typeParameterCompatibilityAccrossDeclarations.ts(17,5): error TS2454: Variable 'i' is used before being assigned.
typeParameterCompatibilityAccrossDeclarations.ts(20,6): error TS2454: Variable 'i2' is used before being assigned.


!!! error TS5107: Option 'module=AMD' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
==== typeParameterCompatibilityAccrossDeclarations.ts (3 errors) ====
    var a = {
       x: function <T>(y: T): T { return null; }
                                  ~~~~~~
!!! error TS2322: Type 'null' is not assignable to type 'T'.
!!! error TS2322:   'T' could be instantiated with an arbitrary type which could be unrelated to 'null'.
    }
    var a2 = {
       x: function (y: any): any { return null; }
    }
    export interface I {
       x<T>(y: T): T;
    }
    export interface I2 {
       x(y: any): any;
    }
     
    var i: I;
    var i2: I2;
     
    a = i; // error
        ~
!!! error TS2454: Variable 'i' is used before being assigned.
    i = a; // error
     
    a2 = i2; // no error
         ~~
!!! error TS2454: Variable 'i2' is used before being assigned.
    i2 = a2; // no error
    