diff --git a/content/blog/2018-03-27-update-on-async-rendering.md b/content/blog/2018-03-27-update-on-async-rendering.md
index c743dd93..d852a02a 100644
--- a/content/blog/2018-03-27-update-on-async-rendering.md
+++ b/content/blog/2018-03-27-update-on-async-rendering.md
@@ -33,22 +33,26 @@ If you'd like to start using the new component APIs introduced in React 16.3 (or
 
 Before we begin, here's a quick overview of the lifecycle changes planned for version 16.3:
 * We are **adding the following lifecycle aliases**: `UNSAFE_componentWillMount`, `UNSAFE_componentWillReceiveProps`, and `UNSAFE_componentWillUpdate`. (Both the old lifecycle names and the new aliases will be supported.)
-* We are **introducing two new lifecycles**, static `getDerivedStateFromProps` and `getSnapshotBeforeUpdate`:
-
-`embed:update-on-async-rendering/new-lifecycles-overview.js`
+* We are **introducing two new lifecycles**, static `getDerivedStateFromProps` and `getSnapshotBeforeUpdate`.
 
 ### New lifecycle: `getDerivedStateFromProps`
 
+`embed:update-on-async-rendering/definition-getderivedstatefromprops.js`
+
 The new static `getDerivedStateFromProps` lifecycle is invoked after a component is instantiated as well as when it receives new props. It can return an object to update `state`, or `null` to indicate that the new `props` do not require any `state` updates.
 
 Together with `componentDidUpdate`, this new lifecycle should cover all use cases for the legacy `componentWillReceiveProps`.
 
 ### New lifecycle: `getSnapshotBeforeUpdate`
 
+`embed:update-on-async-rendering/definition-getsnapshotbeforeupdate.js`
+
 The new `getSnapshotBeforeUpdate` lifecycle is called right before mutations are made (e.g. before the DOM is updated). The return value for this lifecycle will be passed as the third parameter to `componentDidUpdate`. (This lifecycle isn't often needed, but can be useful in cases like manually preserving scroll position during rerenders.)
 
 Together with `componentDidUpdate`, this new lifecycle should cover all use cases for the legacy `componentWillUpdate`.
 
+You can find their type signatures [in this gist](https://gist.github.com/gaearon/88634d27abbc4feeb40a698f760f3264).
+
 We'll look at examples of how both of these lifecycles can be used below.
 
 ## Examples
diff --git a/examples/update-on-async-rendering/definition-getderivedstatefromprops.js b/examples/update-on-async-rendering/definition-getderivedstatefromprops.js
new file mode 100644
index 00000000..d19e4d15
--- /dev/null
+++ b/examples/update-on-async-rendering/definition-getderivedstatefromprops.js
@@ -0,0 +1,5 @@
+class Example extends React.Component {
+  static getDerivedStateFromProps(nextProps, prevState) {
+    // ...
+  }
+}
diff --git a/examples/update-on-async-rendering/definition-getsnapshotbeforeupdate.js b/examples/update-on-async-rendering/definition-getsnapshotbeforeupdate.js
new file mode 100644
index 00000000..caf87abd
--- /dev/null
+++ b/examples/update-on-async-rendering/definition-getsnapshotbeforeupdate.js
@@ -0,0 +1,5 @@
+class Example extends React.Component {
+  getSnapshotBeforeUpdate(prevProps, prevState) {
+    // ...
+  }
+}
diff --git a/examples/update-on-async-rendering/new-lifecycles-overview.js b/examples/update-on-async-rendering/new-lifecycles-overview.js
deleted file mode 100644
index 4bf67772..00000000
--- a/examples/update-on-async-rendering/new-lifecycles-overview.js
+++ /dev/null
@@ -1,19 +0,0 @@
-class Example extends React.Component<
-  Props,
-  State,
-  Snapshot
-> {
-  static getDerivedStateFromProps(
-    nextProps: Props,
-    prevState: State
-  ): $Shape<State> | null {
-    // ...
-  }
-
-  getSnapshotBeforeUpdate(
-    prevProps: Props,
-    prevState: State
-  ): Snapshot {
-    // ...
-  }
-}