More mobx-state-tree Types: map, literal, union, and enumeration

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It is time to give our wishlist app some more depth. In this lesson, we will introduce the concept of groups and users. So that we can manage multiple users inside a group that can have a wishlist. Also, we will take a quick look at powerful features like union types and type discrimination.

In this lesson you will learn:

  • Using the type map to store data by key
  • Using literals to create single value types
  • Combining literals and unions to do type discrimination
  • Using Quokka as scratchpad for quick coding experiments
  • Using enumerations
  • Enumerations are just sugar for a union of literals
Alan Plum
Alan Plum
~ 3 years ago

This is probably not the most politically appropriate example to use for unions, to be perfectly honest.