I'm building a book reader in React Native where the content is stored in segments (e.g., every 100 words) in a database. However, device resolutions and orientations vary so much that hardcoding a fixed word count per page isn't working out. I need a way to determine how many words can be displayed on the screen (or in a specific container) given the available width and height, as well as the current font and styling settings.

What is the best practice for dynamically calculating the number of words that will fit in a given container in React Native?