The TypeScript SDK hasn't hit v1.0 yet. Its public interface is unstable, and there are breaking changes scheduled to happen in the coming weeks to its interface.
The Immutable Core SDK Kotlin/JVM provides convenient access to the Immutable API's for applications written on the Immutable X platform.
See the developer guides for information on building on Immutable X.
See the API reference documentation for more information on our API's.