Introduction to Custom Error Types

Scenario: Payment Error Example

Creating a Custom Payment Error Class

Constructor and Naming Conventions

Importance of 'name' Property

Simulating Payment Function with Error

Successful Payment Scenario

Basic Try-Catch for Payment Errors

Improving Error Handling

Introducing Error Codes

Implementing Error Codes in Constructor

Assigning Specific Error Codes

Handling Different Error Codes with Conditionals

Distinguishing Developer vs. User Messages

User-Friendly Messages

Adding a 'userMessage' Property

Mapping Error Codes to User Messages

Setting User Message Logic

Displaying User-Friendly Messages

Demonstrating User and Developer Messages

Handling Non-Custom Errors

The Problem with Built-in Errors

Using 'instanceof' for Error Type Checking

Conditional Error Handling for Different Types

Conclusion: Benefits of Custom Errors