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I want to know whether React-Native supports single threading or multi threading approach with example
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The renderer uses three different threads: UI thread (often called main): The only thread that can manipulate host views. JavaScript thread: This is where React's render phase is executed. Background thread: Thread dedicated to layout.
That's where react-native-multithreading comes in; you can simply off-load such expensive calculations/blocking calls to a separate thread with almost no overhead while your main React-JS thread can concentrate on running your app's business logic, respond to user input, update state and more.
Now, JavaScript is a single-threaded language, which means it has only one call stack that is used to execute the program. The call stack is the same as the stack data structure that you might read in Data structures.
Redux in multi-threaded environments brings additional concerns that are not present in redux for Javascript. Javascript is single threaded, so Redux. js did not have to address the issue. Android, iOS, and native do have threading, and as such attention must be paid to which threads interact with the store.
Javascript is single threaded. Since React Native is essentially JavaScript (+ native UI), it is single threaded out of the box.
You can however start a new JS process (usually to carry out CPU intensive tasks) using react-native-threads which essentially is a different thread. You can go through the library docs if you want to know more about how it works.
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It's single threaded. Please refer this link. I think it will clear all your doubts. https://react-native.canny.io/feature-requests/p/parallel-multithreading--workers
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