diff --git a/types/first-run/first-run-tests.ts b/types/first-run/first-run-tests.ts
new file mode 100644
index 0000000000..5451c7c88c
--- /dev/null
+++ b/types/first-run/first-run-tests.ts
@@ -0,0 +1,6 @@
+import firstRun = require('first-run');
+
+firstRun(); // $ExpectType boolean
+firstRun({ name: 'foo' }); // $ExpectType boolean
+
+firstRun.clear();
diff --git a/types/first-run/index.d.ts b/types/first-run/index.d.ts
new file mode 100644
index 0000000000..dc92053d03
--- /dev/null
+++ b/types/first-run/index.d.ts
@@ -0,0 +1,26 @@
+// Type definitions for first-run 1.2
+// Project: https://github.com/sindresorhus/first-run
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = firstRun;
+
+/**
+ * Check if it's the first time the process is run.
+ */
+declare function firstRun(options?: firstRun.Options): boolean;
+
+declare namespace firstRun {
+    /**
+     * Clear the state.
+     */
+    function clear(): void;
+
+    interface Options {
+        /**
+         * The name used to identify it.
+         * @default name field in your package.json
+         */
+        name: string;
+    }
+}
diff --git a/types/first-run/tsconfig.json b/types/first-run/tsconfig.json
new file mode 100644
index 0000000000..6a4ce007ab
--- /dev/null
+++ b/types/first-run/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "first-run-tests.ts"
+    ]
+}
diff --git a/types/first-run/tslint.json b/types/first-run/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/first-run/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }