==== tests/cases/conformance/expressions/binaryOperators/arithmeticOperator/arithmeticOperatorWithNullValueAndInvalidOperands.ts (240 errors) ====
    // If one operand is the null or undefined value, it is treated as having the type of the
    // other operand.
    
    var a: boolean;
    var b: string;
    var c: Object;
    
    // operator *
    var r1a1 = null * a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1a2 = null * b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1a3 = null * c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r1b1 = a * null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1b2 = b * null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1b3 = c * null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r1c1 = null * true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1c2 = null * '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1c3 = null * {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r1d1 = true * null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1d2 = '' * null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r1d3 = {} * null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator /
    var r2a1 = null / a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2a2 = null / b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2a3 = null / c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r2b1 = a / null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2b2 = b / null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2b3 = c / null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r2c1 = null / true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2c2 = null / '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2c3 = null / {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r2d1 = true / null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2d2 = '' / null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r2d3 = {} / null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator %
    var r3a1 = null % a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3a2 = null % b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3a3 = null % c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r3b1 = a % null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3b2 = b % null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3b3 = c % null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r3c1 = null % true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3c2 = null % '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3c3 = null % {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r3d1 = true % null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3d2 = '' % null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r3d3 = {} % null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator -
    var r4a1 = null - a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4a2 = null - b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4a3 = null - c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r4b1 = a - null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4b2 = b - null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4b3 = c - null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r4c1 = null - true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4c2 = null - '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4c3 = null - {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r4d1 = true - null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4d2 = '' - null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r4d3 = {} - null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator <<
    var r5a1 = null << a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5a2 = null << b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5a3 = null << c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r5b1 = a << null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5b2 = b << null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5b3 = c << null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r5c1 = null << true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5c2 = null << '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5c3 = null << {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r5d1 = true << null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5d2 = '' << null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r5d3 = {} << null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator >>
    var r6a1 = null >> a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6a2 = null >> b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6a3 = null >> c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r6b1 = a >> null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6b2 = b >> null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6b3 = c >> null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r6c1 = null >> true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6c2 = null >> '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6c3 = null >> {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r6d1 = true >> null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6d2 = '' >> null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r6d3 = {} >> null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator >>>
    var r7a1 = null >>> a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                        ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7a2 = null >>> b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                        ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7a3 = null >>> c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                        ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r7b1 = a >>> null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7b2 = b >>> null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7b3 = c >>> null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r7c1 = null >>> true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                        ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7c2 = null >>> '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                        ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7c3 = null >>> {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                        ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r7d1 = true >>> null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                        ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7d2 = '' >>> null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r7d3 = {} >>> null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator &
    var r8a1 = null & a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8a2 = null & b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8a3 = null & c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r8b1 = a & null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8b2 = b & null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8b3 = c & null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r8c1 = null & true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8c2 = null & '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8c3 = null & {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r8d1 = true & null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8d2 = '' & null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r8d3 = {} & null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator ^
    var r9a1 = null ^ a;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9a2 = null ^ b;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9a3 = null ^ c;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r9b1 = a ^ null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9b2 = b ^ null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9b3 = c ^ null;
               ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                   ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r9c1 = null ^ true;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9c2 = null ^ '';
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9c3 = null ^ {};
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r9d1 = true ^ null;
               ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                      ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9d2 = '' ^ null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r9d3 = {} ^ null;
               ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    // operator |
    var r10a1 = null | a;
                ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10a2 = null | b;
                ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10a3 = null | c;
                ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r10b1 = a | null;
                ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10b2 = b | null;
                ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10b3 = c | null;
                ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                    ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r10c1 = null | true;
                ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10c2 = null | '';
                ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10c3 = null | {};
                ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    
    var r10d1 = true | null;
                ~~~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                       ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10d2 = '' | null;
                ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    var r10d3 = {} | null;
                ~~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
                     ~~~~
!!! The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.