What are some advanced techniques for using prop types in Vue 3?

What are some advanced techniques for using prop types in Vue 3?

In Vue 3, you can use advanced techniques like custom validators, default values, and type checking with TypeScript. Would you like to explore any specific technique?

Can you explain how to create custom validators?

Sure! You can create custom validators by defining a function that returns true or false based on your validation logic. For example:

props: {
  myProp: {
    type: String,
    validator: function(value) {
      return value.length > 5; // Validates that the string length is greater than 5
    }
  }
}

This ensures that myProp only accepts strings longer than 5 characters.

What about using TypeScript with prop types?

When using TypeScript, you can define your props with interfaces or types, which provides better type safety. For example:

interface MyComponentProps {
  myProp: string;
}

export default defineComponent({
  props: { myProp: String }
});

This way, TypeScript will check the types at compile time.

Are there any performance considerations I should be aware of?

Yes, using complex validators can impact performance, especially if they involve heavy computations. It's best to keep validators simple and avoid unnecessary re-evaluations.