You can install
@syncstate/core for the core functionality as a package from NPM.
The recommended way to use SyncState with React is to use
@syncstate/react. It has a hook for reactive updates and a Provider component to make the store available to the whole app.
Both packages are available as CJS as well as ESM packages. The source code is written in TypeScript and the published code is compiled to ES5 for compatibility across older browsers.