==== tests/cases/compiler/collisionThisExpressionAndLocalVarInProperty.ts (2 errors) ====
    class class1 {
        public prop1 = {
            doStuff: (callback) => () => {
                var _this = 2;
                    ~~~~~
!!! Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
                return callback(this);
            }
        }
    }
    
    class class2 {
        constructor() {
            var _this = 2;
                ~~~~~
!!! Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference.
        }
        public prop1 = {
            doStuff: (callback) => () => {
                return callback(this);
            }
        }
    }