Add changeset

.changeset/fair-lemons-cross.md

@@ -0,0 +1,47 @@
+---
+'xstate': minor
+---
+
+Event creators can now be modeled inside of the 2nd argument of `createModel()`, and types for both `context` and `events` will be inferred properly in `createMachine()` when given the `typeof model` as the first generic parameter.
+
+```ts
+import { createModel } from 'xstate/lib/model';
+
+const userModel = createModel(
+  // initial context
+  {
+    name: 'David',
+    age: 30
+  },
+  // creators (just events for now)
+  {
+    events: {
+      updateName: (value: string) => ({ value }),
+      updateAge: (value: number) => ({ value }),
+      anotherEvent: () => ({}) // no payload
+    }
+  }
+);
+
+const machine = createMachine<typeof userModel>({
+  context: userModel.initialContext,
+  initial: 'active',
+  states: {
+    active: {
+      on: {
+        updateName: {
+          /* ... */
+        },
+        updateAge: {
+          /* ... */
+        }
+      }
+    }
+  }
+});
+
+const nextState = machine.transition(
+  undefined,
+  userModel.events.updateName('David')
+);
+```