Over the years of being a web developer with a focus on accessibility, I have mostly dealt with widely-adopted, standardized UI components, well supported by assistive technologies (AT). For these types of widgets, there are concise ARIA authoring practices as well as great tools like axe-core that can be used to test web components for accessibility issues. Creating less common widgets, especially those that have no widely-adopted conventions for user interaction can be very tricky.Original Source