diff --git a/package.json b/package.json
index 1418720..1845720 100644
--- a/package.json
+++ b/package.json
@@ -6,14 +6,15 @@
   "module": "dist/stockroom.es.js",
   "main": "dist/stockroom.js",
   "umd:main": "dist/stockroom.umd.js",
-  "typings": "index.d.ts",
+  "typings": "src/index.d.ts",
   "scripts": {
-    "build": "npm-run-all --silent bundle size docs",
+    "build": "npm-run-all --silent bundle size docs types",
     "bundle": "microbundle src/index.js -o dist/stockroom.js && microbundle src/inline.js -o inline/index.js && microbundle src/worker.js -o worker/index.js",
     "size": "strip-json-comments --no-whitespace dist/stockroom.js | gzip-size && bundlesize",
     "docs": "documentation readme src/*.js -q --section API && npm run -s fixreadme",
     "fixreadme": "node -e 'var fs=require(\"fs\");fs.writeFileSync(\"README.md\", fs.readFileSync(\"README.md\", \"utf8\").replace(/^-   /gm, \"- \"))'",
     "test": "eslint src test && npm run bundle && karma start test/karma.conf.js --single-run",
+    "types": "cp-cli src/worker.d.ts worker/index.d.ts && cp-cli src/inline.d.ts inline/index.d.ts",
     "prepare": "npm t",
     "release": "npm t && git commit -am $npm_package_version && git tag $npm_package_version && git push && git push --tags && npm publish"
   },
@@ -68,6 +69,7 @@
     "babel-preset-stage-0": "^6.24.1",
     "bundlesize": "^0.15.3",
     "chai": "^4.1.2",
+    "cp-cli": "^1.1.2",
     "documentation": "^4.0.0",
     "eslint": "^4.16.0",
     "eslint-config-developit": "^1.1.1",
diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100644
index 0000000..b11e237
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,5 @@
+// K - Store state
+
+import { Store } from "unistore";
+
+export default function createStore<K>(worker: Worker): Store<K>;
diff --git a/src/inline.d.ts b/src/inline.d.ts
new file mode 100644
index 0000000..c7646d7
--- /dev/null
+++ b/src/inline.d.ts
@@ -0,0 +1,12 @@
+// K - Store state
+
+import { Store } from "unistore";
+
+export interface WorkerStore<K> extends Store<K> {
+	freeze: () => void;
+	unfreeze: () => void;
+}
+
+export default function createInlineStore<K>(
+	workerStore: WorkerStore<K>
+): WorkerStore<K>;
diff --git a/src/worker.d.ts b/src/worker.d.ts
new file mode 100644
index 0000000..73eb2df
--- /dev/null
+++ b/src/worker.d.ts
@@ -0,0 +1,10 @@
+// K - Store state
+
+import { Store } from "unistore";
+
+export interface WorkerStore<K> extends Store<K> {
+	freeze: () => void;
+	unfreeze: () => void;
+}
+
+export default function createWorkerStore<K>(initialState?: K): WorkerStore<K>;