diff --git a/.github/workflows/tag.yml b/.github/workflows/tag.yml
index 60fff66..05232fc 100644
--- a/.github/workflows/tag.yml
+++ b/.github/workflows/tag.yml
@@ -18,6 +18,7 @@ jobs:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
       - run: yarn
       - run: yarn build
+      - run: yarn tsc
       - uses: JS-DevTools/npm-publish@v1
         with:
           token: ${{ secrets.NPM_TOKEN }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b0a9da..4d8e2c8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## 0.2.0 - JSDoc type coverage, docs site
+
+- chore: cover codebase with JSDoc types
+- chore: add typecheck CI step
+- feat: support ESM/CommonJS `jambox.config.js` in config files
+- feat: build & publish TS types
+
 ## 0.1.2 - Fix config api route
 
 - fix: wait on `reset` event during config api calls
diff --git a/ext/Api.js b/ext/Api.js
index 851b458..36d164b 100644
--- a/ext/Api.js
+++ b/ext/Api.js
@@ -2,15 +2,11 @@
 import Observable from 'zen-observable';
 import { debounce } from './nodash.js';
 
-/**
- * @typedef {import('./types').Subscribtion} Subscribtion
- */
-
 const WEBSOCKET_RETRY_TIMER = 3000;
 
 export default class API {
   /**
-   * @type {?Subscribtion}
+   * @type {?ZenObservable.Subscription}
    * */
   #sub;
   /**
diff --git a/ext/panel.js b/ext/panel.js
index c4a6bf7..71976c3 100644
--- a/ext/panel.js
+++ b/ext/panel.js
@@ -1,5 +1,5 @@
 import App from './App.svelte';
-import API from './Api';
+import API from './Api.js';
 
 const boot = async () => {
   const api = await API.create();
diff --git a/ext/types.d.ts b/ext/types.d.ts
deleted file mode 100644
index 7be14c5..0000000
--- a/ext/types.d.ts
+++ /dev/null
@@ -1 +0,0 @@
-export type { Subscribtion } from 'zen-observable';
diff --git a/package.json b/package.json
index 0db00df..ceb3b0b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jambox",
-  "version": "0.1.2",
+  "version": "0.2.0",
   "description": "Tool for recording and playing back HTTP requests.",
   "bin": {
     "jam": "./jam.mjs",
@@ -11,6 +11,7 @@
   "engines": {
     "node": ">= 16.20.2"
   },
+  "types": "./dist/index.d.ts",
   "author": "Arthur Buldauskas <arthurbuldauskas@gmail.com>",
   "license": "MIT",
   "repository": {
diff --git a/webpack.config.js b/webpack.config.js
index d94442b..1795729 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -60,17 +60,14 @@ export default {
   module: {
     rules: [
       {
-        test: /\.js$/,
+        test: /\.(js)$/,
         resolve: {
           fullySpecified: false,
         },
       },
       {
-        test: /.(js)$/,
+        test: /\.(js)$/,
         loader: 'babel-loader',
-        resolve: {
-          fullySpecified: false,
-        },
       },
       {
         test: /\.(svelte)$/,