Custom error handling

customErrorHandling.ts

class MyCustomError extends Error {
  customField?: string
  constructor(msg: string, customData: Record<string, string>) {
    super(msg)
    this.customField = customData.customField
  }
}

try {
 throw new MyCustomError('Custom Error',  { customField: 'additional data' })
} catch (e) {
  if (e instanceof MyCustomError) {
    console.error(e.customField)
  }
}