Vue.js SEO Enhancement Component

This challenge focuses on building a reusable Vue.js component that dynamically updates the page's <title> and <meta> tags based on provided data. Implementing proper SEO optimization is crucial for website visibility, and this component aims to simplify that process within a Vue application, ensuring that dynamic content is reflected in the page's metadata.

Problem Description

You are tasked with creating a Vue.js component called SeoMetaTags that accepts data as props and updates the <title> and <meta> tags of the page accordingly. The component should render nothing directly to the DOM (it's purely for metadata manipulation). It should handle updates gracefully when the props change.

What needs to be achieved:

• Create a Vue component that accepts title, description, keywords (as strings) as props.
• Dynamically update the <title> tag of the document with the provided title prop.
• Dynamically update the description meta tag with the provided description prop.
• Dynamically update the keywords meta tag with the provided keywords prop.
• The component should be reactive; changes to the props should trigger immediate updates to the metadata.

Key Requirements:

• The component must be written in TypeScript.
• The component should not render any visible elements in the DOM.
• The component should use the document object to manipulate the <title> and <meta> tags.
• The component should handle cases where props are initially undefined or null.
• The component should be reusable across different Vue components.

Expected Behavior:

When the SeoMetaTags component is mounted, it should set the initial metadata based on the provided props. Whenever any of the props (title, description, keywords) change, the component should update the corresponding metadata tags in the document.

Edge Cases to Consider:

• Empty strings for title, description, or keywords. Should these be cleared or left as is? (Assume clear them).
• Props being initially null or undefined.
• Multiple instances of the component on the same page. The last instance's props should take precedence.
• Invalid or malformed keywords. (Assume keywords are always valid strings).

Examples

Example 1:

Input: title: "My Awesome Blog", description: "A blog about coding and Vue.js", keywords: "vue, javascript, coding, blog"
Output:
<title>My Awesome Blog</title>
<meta name="description" content="A blog about coding and Vue.js">
<meta name="keywords" content="vue, javascript, coding, blog">
Explanation: The component updates the title and meta tags with the provided values.

Example 2:

Input: title: null, description: "Another blog", keywords: ""
Output:
<title></title>
<meta name="description" content="Another blog">
<meta name="keywords" content="">
Explanation:  Null title clears the title tag, empty keywords clears the keywords meta tag.

Example 3: (Edge Case)

Input: title: "Initial Title", description: "Initial Description", keywords: "initial keywords"
Then, after a few seconds: title: "New Title", description: "New Description", keywords: "new keywords"
Output:
<title>New Title</title>
<meta name="description" content="New Description">
<meta name="keywords" content="new keywords">
Explanation: The component reacts to prop changes and updates the metadata accordingly.

Constraints

• The component must be a functional component.
• The component must be written in TypeScript.
• The component should be lightweight and have minimal performance impact. Avoid unnecessary DOM manipulations.
• The component should not rely on external libraries.
• The component should be compatible with Vue 3.

Notes

• Consider using watch or computed properties to react to prop changes.
• Be mindful of how you update the document object to avoid race conditions or unexpected behavior.
• Think about how to handle potential errors when manipulating the DOM. While error handling isn't explicitly required, consider it for robustness.
• Focus on creating a clean, reusable, and efficient component.
• The component should be designed to be easily integrated into existing Vue projects.