[Vuejs]-Vue3 (Composition API) integration with HereMaps Polygon API Issue

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The code you’ve provided seems correct and should work in most cases. However, if you’re experiencing issues where the map container becomes blank after adding the polygon to the map, there could be a few reasons for this behavior. Here are a few steps you can take to troubleshoot and potentially resolve the issue:

  1. Check Dependencies and Initialization:
    Ensure that you have properly initialized the HereMap instance and that all the required dependencies are properly installed. Make sure you’ve created the map instance correctly.

  2. Check Container Size:
    Sometimes, the map container might not have the correct dimensions. Ensure that the container (e.g., a <div> element) where you’re rendering the map has proper width and height specified either through CSS or inline styles.

  3. Check for Conflicts:
    Make sure there are no conflicting CSS styles or JavaScript code that might interfere with the rendering of the map or the polygon. In Vue applications, CSS scoping might affect styles, so check if any styles are unintentionally affecting the map container.

  4. Console Errors:
    Open the browser’s developer console and check for any error messages or warnings related to the HereMap integration. This might give you more insight into the issue.

  5. Update Dependencies:
    Make sure you are using the latest version of the HereMaps API and any related dependencies. Sometimes, issues can arise due to outdated libraries.

  6. Vue Composition API Considerations:
    Since you mentioned you’re using Vue 3 with the Composition API, ensure that the way you are interacting with the DOM and integrating third-party libraries aligns with Vue’s reactivity model. For instance, if you’re manipulating the DOM directly, it might conflict with Vue’s rendering and cause unexpected behavior.

  7. Async/Await and Initialization:
    Depending on how the HereMaps API is loaded and initialized, you might need to use async/await or promise-based approaches to ensure that the map is fully ready before adding objects like polygons to it.

  8. Isolation and Modules:
    If you’re using Vue CLI or a module bundler, make sure the HereMaps scripts and initialization are properly integrated into your application’s modules.

  9. Debug Step by Step:
    Temporarily simplify your code and remove other components or functionalities that might be interacting with the map. Start with a minimal example, and gradually add complexity while testing to identify when and how the issue occurs.

If none of these steps resolve the issue, providing more specific details about how you’re initializing the map, the structure of your Vue components, and any relevant error messages would be helpful in offering more targeted assistance.

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