Defining Props with TypeScript in Vue 3

This challenge focuses on correctly defining and validating props for a Vue 3 component using TypeScript. Properly defining props ensures type safety, improves code readability, and helps prevent errors during development. This is a fundamental skill for building robust and maintainable Vue applications.

Problem Description

You are tasked with creating a Vue 3 component called UserCard that displays user information. The component should accept the following props:

name: A string representing the user's name. This prop is required.
age: A number representing the user's age. This prop is optional.
isActive: A boolean indicating whether the user is active. This prop is optional and defaults to true.
occupation: A string representing the user's occupation. This prop should be one of the following values: "Engineer", "Doctor", "Teacher", or "Student". This prop is optional.

You need to define these props using TypeScript within the Vue component's defineProps API. The prop definitions should include:

Type annotations for each prop.
Whether each prop is required or optional.
A default value for the isActive prop.
A validator for the occupation prop to ensure it's one of the allowed values.

Examples

Example 1:

Input:  Component usage: <UserCard name="Alice" age={30} occupation="Engineer" />
Output: The component renders a card displaying "Name: Alice", "Age: 30", "Is Active: true", and "Occupation: Engineer".
Explanation: All required props are provided, and the optional props have their default values or are explicitly set. The occupation is a valid value.

Example 2:

Input: Component usage: <UserCard name="Bob" />
Output: The component renders a card displaying "Name: Bob", "Age: undefined", "Is Active: true", and "Occupation: undefined".
Explanation: Only the required `name` prop is provided. The optional props take their default values.

Example 3:

Input: Component usage: <UserCard name="Charlie" occupation="Chef" />
Output:  A warning is displayed in the console indicating that the `occupation` prop is invalid. The component renders with `occupation` as `undefined`.
Explanation: The `occupation` prop is provided with an invalid value ("Chef"). The validator prevents the component from using this invalid value.

Constraints

The solution must use Vue 3's defineProps API.
The solution must be written in TypeScript.
The validator for occupation must use a type-safe approach (e.g., a union type).
The component should not render any content if the name prop is not provided. This is an edge case to consider.

Notes

Consider using a union type to define the allowed values for the occupation prop.
The validator should prevent the component from using invalid values for the occupation prop. It doesn't need to throw an error, but should prevent the invalid value from being used.
Focus on type safety and clear prop definitions.
You don't need to implement the actual rendering logic of the UserCard component; only the prop definitions are required. A simple console.log statement to verify the prop values is sufficient.

Defining Props with TypeScript in Vue 3

Problem Description

You are tasked with creating a Vue 3 component called UserCard that displays user information. The component should accept the following props:

name: A string representing the user's name. This prop is required.

age: A number representing the user's age. This prop is optional.

isActive: A boolean indicating whether the user is active. This prop is optional and defaults to true.

occupation: A string representing the user's occupation. This prop should be one of the following values: "Engineer", "Doctor", "Teacher", or "Student". This prop is optional.

You need to define these props using TypeScript within the Vue component's defineProps API. The prop definitions should include:

Type annotations for each prop.

Whether each prop is required or optional.

A default value for the isActive prop.

A validator for the occupation prop to ensure it's one of the allowed values.

Examples

Example 1:

Input: Component usage: <UserCard name="Alice" age={30} occupation="Engineer" /> Output: The component renders a card displaying "Name: Alice", "Age: 30", "Is Active: true", and "Occupation: Engineer". Explanation: All required props are provided, and the optional props have their default values or are explicitly set. The occupation is a valid value.

Example 2:

Input: Component usage: <UserCard name="Bob" /> Output: The component renders a card displaying "Name: Bob", "Age: undefined", "Is Active: true", and "Occupation: undefined". Explanation: Only the required `name` prop is provided. The optional props take their default values.

Example 3:

Input: Component usage: <UserCard name="Charlie" occupation="Chef" /> Output: A warning is displayed in the console indicating that the `occupation` prop is invalid. The component renders with `occupation` as `undefined`. Explanation: The `occupation` prop is provided with an invalid value ("Chef"). The validator prevents the component from using this invalid value.

Notes

Consider using a union type to define the allowed values for the occupation prop.

The validator should prevent the component from using invalid values for the occupation prop. It doesn't need to throw an error, but should prevent the invalid value from being used.

Focus on type safety and clear prop definitions.

You don't need to implement the actual rendering logic of the UserCard component; only the prop definitions are required. A simple console.log statement to verify the prop values is sufficient.