In React {Transitions} = F(state)

{transitions} = f(state) Feb 26, 2025 | Play Listen TL;DR: Thinking about the React component tree as modeling a state machine can help clarify the implications of asynchronous updates and React’s concurrent features. A state machine is a formal way of describing a stateful system which changes over time. It generally consists of explicitly defining the states that the system can be in, as well as defining a state transition table which enumerates the set of valid transitions (updates which put the machine in a new state) for each discrete state. A React application can be thought of as modeling a state machine. Each render takes a state and produces the UI for that state. This is the famous UI = f(state) mental model of React. But, for complex applications, formally enumerating a transition table is often not feasible. When the number of possible states is not finite, a table will not suffice and we must instead define a mapping: a conceptual function which takes in a state and re ... Read full article.