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Using TypeScript for Building Polymorphic React Components

Using a Generic Polymorphic Prop

Explore how to implement a polymorphic text component in React with TypeScript by using generic polymorphic props. Understand how to constrain generics correctly and resolve common syntax errors, especially with arrow function generics. This lesson helps you build flexible, strongly typed components suitable for modern web applications.

We'll cover the following...

We have spent some time building a basic version of a polymorphic component, as shown below.

TypeScript 3.3.4
const MyComponent = ({ as, children }) => {
  const Component = as || "span";
  return <Component>{children}</Component>;
};

Let's change the name of the component from MyComponent to PolymorphicText. We will now focus on building a polymorphic text component. ...