How do I manage dependencies when using loadAsync in Figma

Use `waitForTask` to keep the plugin alive

When using `loadAsync` to fetch data asynchronously, you should wrap the asynchronous operation in a `waitForTask` call. This ensures the plugin stays alive until the asynchronous operation completes, preventing the plugin from closing prematurely.

javascript
const { waitForTask } = figma.widget;

async function fetchData() {
  const data = await loadAsync();
  // Process the data
}

waitForTask(fetchData());

Handle errors properly

Always wrap your `loadAsync` calls in a `try/catch` block to properly handle any errors that may occur. Log the errors and provide meaningful feedback to the user.

javascript
async function fetchData() {
  try {
    const data = await loadAsync();
    // Process the data
  } catch (error) {
    console.error(error);
    figma.notify('Error fetching data');
  }
}

waitForTask(fetchData());

Batch or debounce requests

To optimize network requests and reduce load on the Figma API, consider batching or debouncing your `loadAsync` calls. This can be especially useful if you need to fetch data for multiple nodes or pages.

javascript
// Debounce network requests
function debounce(func, delay) {
  let timeoutId;
  return (...args) => {
    clearTimeout(timeoutId);
    timeoutId = setTimeout(() => func.apply(this, args), delay);
  };
}

const debouncedFetch = debounce(fetchData, 500);

Provide feedback to users

When performing long-running asynchronous tasks, provide visual feedback to users like progress bars or loading indicators. This improves the user experience and lets them know the plugin is working.

javascript
async function fetchData() {
  figma.ui.postMessage({ type: 'showLoading' });

  try {
    const data = await loadAsync();
    // Process the data
  } catch (error) {
    console.error(error);
    figma.notify('Error fetching data');
  } finally {
    figma.ui.postMessage({ type: 'hideLoading' });
  }
}

waitForTask(fetchData());

Manage dependencies between libraries

If your plugin depends on assets or data from other Figma libraries, you'll need to manage those dependencies carefully. Consider the following strategies:

- Embed dependencies: If the dependencies are small, you can embed them directly in your plugin's Figma file.
- Provide instructions: If the dependencies are larger, provide clear instructions for users on how to set up the required libraries.
- Use the Figma API: Use the Figma REST API to fetch data from other libraries programmatically, and handle any missing dependencies gracefully.

By following these best practices, you can effectively manage dependencies when using `loadAsync` in your Figma plugins and widgets, ensuring a smooth and reliable user experience.