...Tracks mouse hover state of some element. Display an element or video full-screen. Tracks location hash value. Tracks whether user is being inactive. Tracks an HTML element's intersection. Synthesizes speech from a text string. Tracks page navigation bar location state. Re-renders component, while tweening a number from 0 to 1. Tracks long press gesture of some element. Tracks state of a CSS media query. Tracks state of connected hardware devices. Returns a callback, which re-renders component when called. Tracks state of device's motion sensor. ...