demo/typescript.js
function createTempVariable(flags) {
                var result = ts.createSynthesizedNode(69 /* Identifier */);
                result.text = makeTempVariableName(flags);
                return result;
            }
function createTempVariable(flags) {
                var result = ts.createSynthesizedNode(69 /* Identifier */);
                result.text = makeTempVariableName(flags);
                return result;
            }
Create a temporary variable with a unique unused name.