==== tests/cases/conformance/expressions/unaryOperators/decrementOperator/decrementOperatorWithNumberTypeInvalidOperations.ts (20 errors) ====
    // -- operator on number type
    var NUMBER: number;
    var NUMBER1: number[] = [1, 2];
    
    function foo(): number { return 1; }
    
    class A {
        public a: number;
        static foo() { return 1; }
    }
    module M {
        export var n: number;
    }
    
    var objA = new A();
    
    //number type var
    var ResultIsNumber1 = --NUMBER1;
                            ~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    var ResultIsNumber2 = NUMBER1--;
                          ~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    
    // number type literal
    var ResultIsNumber3 = --1;
                            ~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    var ResultIsNumber4 = --{ x: 1, y: 2};
                            ~~~~~~~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    var ResultIsNumber5 = --{ x: 1, y: (n: number) => { return n; } };
                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    
    var ResultIsNumber6 = 1--;
                          ~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    var ResultIsNumber7 = { x: 1, y: 2 }--;
                          ~~~~~~~~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    var ResultIsNumber8 = { x: 1, y: (n: number) => { return n; } }--;
                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    
    // number type expressions
    var ResultIsNumber9 = --foo();
                            ~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    var ResultIsNumber10 = --A.foo();
                             ~~~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    var ResultIsNumber11 = --(NUMBER + NUMBER);
                             ~~~~~~~~~~~~~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    
    var ResultIsNumber12 = foo()--;
                           ~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    var ResultIsNumber13 = A.foo()--;
                           ~~~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    var ResultIsNumber14 = (NUMBER + NUMBER)--;
                           ~~~~~~~~~~~~~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    
    // miss assignment operator
    --1;
      ~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    --NUMBER1;
      ~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    --foo();
      ~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    
    1--;
    ~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.
    NUMBER1--;
    ~~~~~~~
!!! An arithmetic operand must be of type 'any', 'number' or an enum type.
    foo()--;
    ~~~~~
!!! The operand of an increment or decrement operator must be a variable, property or indexer.