devexpress/devextreme — reverse-engineered prompt

Build me an enterprise ready JavaScript UI component suite for responsive web apps. I want it to work nicely with Angular, React, Vue, and jQuery, so developers can use the same set of polished components in whatever front end they already have.

The main goal is a reliable collection of accessible components that look good on phones, tablets, and desktop screens. Include things people actually need for business apps, like data grids, interactive charts, form editors, widgets, scheduling style views, tree style lists, pivot style data views, file management, and Gantt style planning.

Please also make a demo gallery where someone can try the components and see common examples, plus simple getting started docs for each supported framework. Keep the API clean, consistent, and TypeScript friendly. Make sure keyboard navigation and screen reader support are treated as first class requirements. Look up current docs online if you need to.