diff --git a/types/react-fade-in/index.d.ts b/types/react-fade-in/index.d.ts
new file mode 100644
index 0000000000..6100fc8a2b
--- /dev/null
+++ b/types/react-fade-in/index.d.ts
@@ -0,0 +1,30 @@
+// Type definitions for react-fade-in 0.1
+// Project: github.com/gkaemmer/react-fade-in
+// Definitions by: Barry Michael Doyle <https://github.com/barrymichaeldoyle>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 3.1
+
+import { ComponentClass, ReactNode } from 'react';
+
+/**
+ * Props for a FadeIn component.
+ */
+export interface FadeInProps {
+    children?: ReactNode;
+    className?: string;
+    /**
+     * Default: 50. Delay between each child's animation in milliseconds.
+     */
+    delay?: number;
+    /**
+     * Default: 400. Duration of each child's animation in milliseconds.
+     */
+    transitionDuration?: number;
+}
+
+/**
+ * Visually animates content on render with FadeIn.js
+ */
+declare const FadeIn: ComponentClass<FadeInProps>;
+
+export default FadeIn;
diff --git a/types/react-fade-in/react-fade-in-tests.tsx b/types/react-fade-in/react-fade-in-tests.tsx
new file mode 100644
index 0000000000..7171ffc658
--- /dev/null
+++ b/types/react-fade-in/react-fade-in-tests.tsx
@@ -0,0 +1,40 @@
+import * as React from 'react';
+import FadeIn from 'react-fade-in';
+
+export const _ = () => (
+    <>
+        <FadeIn />
+        <FadeIn>
+            <div>Element 1</div>
+            <div>Element 2</div>
+            <div>Element 3</div>
+            <div>Element 4</div>
+            <div>Element 5</div>
+            <div>Element 6</div>
+        </FadeIn>
+        <FadeIn className="typescript">
+            <div>Element 1</div>
+            <div>Element 2</div>
+            <div>Element 3</div>
+            <div>Element 4</div>
+            <div>Element 5</div>
+            <div>Element 6</div>
+        </FadeIn>
+        <FadeIn delay={60}>
+            <div>Element 1</div>
+            <div>Element 2</div>
+            <div>Element 3</div>
+            <div>Element 4</div>
+            <div>Element 5</div>
+            <div>Element 6</div>
+        </FadeIn>
+        <FadeIn transitionDuration={500}>
+            <div>Element 1</div>
+            <div>Element 2</div>
+            <div>Element 3</div>
+            <div>Element 4</div>
+            <div>Element 5</div>
+            <div>Element 6</div>
+        </FadeIn>
+    </>
+);
diff --git a/types/react-fade-in/tsconfig.json b/types/react-fade-in/tsconfig.json
new file mode 100644
index 0000000000..895d8bca05
--- /dev/null
+++ b/types/react-fade-in/tsconfig.json
@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "jsx": "react",
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "react-fade-in-tests.tsx"
+    ]
+}
diff --git a/types/react-fade-in/tslint.json b/types/react-fade-in/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/react-fade-in/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }
diff --git a/types/react-hook-mousetrap/index.d.ts b/types/react-hook-mousetrap/index.d.ts
new file mode 100644
index 0000000000..8eb0ebe840
--- /dev/null
+++ b/types/react-hook-mousetrap/index.d.ts
@@ -0,0 +1,9 @@
+// Type definitions for react-hook-mousetrap 2.0
+// Project: https://github.com/olup/react-hook-mousetrap
+// Definitions by: Barry Michael Doyle <https://github.com/barrymichaeldoyle>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 3.1
+
+declare function useMousetrap(keys: string | string[], callback: () => void): void;
+
+export default useMousetrap;
diff --git a/types/react-hook-mousetrap/react-hook-mousetrap-tests.tsx b/types/react-hook-mousetrap/react-hook-mousetrap-tests.tsx
new file mode 100644
index 0000000000..aae281fcde
--- /dev/null
+++ b/types/react-hook-mousetrap/react-hook-mousetrap-tests.tsx
@@ -0,0 +1,8 @@
+import useMousetrap from 'react-hook-mousetrap';
+
+export const _ = () => {
+    useMousetrap('down', () => console.log('down arrow pressed'));
+    useMousetrap(['left', 'right'], () => console.log('left or right arrow pressed'));
+
+    return null;
+};
diff --git a/types/react-hook-mousetrap/tsconfig.json b/types/react-hook-mousetrap/tsconfig.json
new file mode 100644
index 0000000000..3092442c7a
--- /dev/null
+++ b/types/react-hook-mousetrap/tsconfig.json
@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "jsx": "react",
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "react-hook-mousetrap-tests.tsx"
+    ]
+}
diff --git a/types/react-hook-mousetrap/tslint.json b/types/react-hook-mousetrap/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/react-hook-mousetrap/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }