node js good catch error code example

Example 1: node js throw error

FactoryController.prototype.create = function (callback) {
    //The throw is working, and the exception is returned.
    throw new Error('An error occurred'); //outside callback 
    try {
        this.check(function (check_result) {
            callback(check_result);
        });
    } catch (ex) {
        throw new Error(ex.toString());
    }
}

FactoryController.prototype.create = function (callback) {
    try {
        this.check(function (check_result) {
            //The throw is not working on this case to return the exception to the caller(parent)
            throw new Error('An error occurred'); //inside callback 
        });
    } catch (ex) {
        throw new Error(ex.toString());
    }
}

Example 2: node js type error

TypeError: res.status is not a function
    at C:\Users\lenovo\Desktop\MERN\backend\app.js:16:8
    at Layer.handle_error (C:\Users\lenovo\Desktop\MERN\backend\node_modules\express\lib\router\layer.js:71:5)
    at trim_prefix (C:\Users\lenovo\Desktop\MERN\backend\node_modules\express\lib\router\index.js:315:13)
    at C:\Users\lenovo\Desktop\MERN\backend\node_modules\express\lib\router\index.js:284:7
    at Function.process_params (C:\Users\lenovo\Desktop\MERN\backend\node_modules\express\lib\router\index.js:335:12)
    at Immediate.next (C:\Users\lenovo\Desktop\MERN\backend\node_modules\express\lib\router\index.js:275:10)
    at Immediate.<anonymous> (C:\Users\lenovo\Desktop\MERN\backend\node_modules\express\lib\router\index.js:635:15)
    at processImmediate (internal/timers.js:458:21)


reason:-(error,res,req,next)  order of argument is incorrect req after before res
solution:-(error,req,res,next)