Immutable Data with Readonly
Explore how to implement immutable data in TypeScript using the Readonly mapped type and the JavaScript Object.freeze function. This lesson helps you understand how mapped types work by looping through object properties to create readonly versions, improving code safety and predictability.
We'll cover the following...
We'll cover the following...
The Object.freeze function
One well-known JavaScript function that has a mapped type already backed in TypeScript is the Object.freeze. The role of this function is to take a type and return everything as read-only. The function will have a return type of ...