diff --git a/lib/shareon.js b/lib/shareon.js
index 20a7708..3a5d4e3 100644
--- a/lib/shareon.js
+++ b/lib/shareon.js
@@ -4,24 +4,20 @@
  */
 
 /**
- * @typedef {{
+ * Social networks with their URL building functions.
+ *
+ * The format of this object is a map of strings (social networks' names) to the
+ * respective URL building functions. Such functions takes an object with the
+ * metadata of the page and returns the built URL.
+ *
+ * @type {{ [network: string]: (d: {
  *   url: string,
  *   title?: string,
  *   media?: string,
  *   text?: string,
  *   via?: string,
- *   fbAppId?: string,
- * }} PublicationData
- */
-
-/**
- * @typedef {function(PublicationData): string} UrlBuilder
- */
-
-/**
- * List of social networks available to shareon
- *
- * @type {Record<string, UrlBuilder>}
+ *   fbAppId?: string
+ * }) => string}}
  */
 const URL_BUILDERS = {
   facebook: (d) => `https://www.facebook.com/sharer/sharer.php?u=${d.url}`,
@@ -39,7 +35,14 @@ const URL_BUILDERS = {
   whatsapp: (d) => `https://wa.me/?text=${d.title}%0D%0A${d.url}${d.text ? `%0D%0A%0D%0A${d.text}` : ''}`,
 };
 
-const populate = () => {
+/**
+ * Populates shareon buttons with correct URLs.
+ *
+ * This function generates the sharing URL for every share button and embeds
+ * them into the elements. For <a> elements, it updates the "href" attribute.
+ * For others, it sets a "click" listener.
+ */
+const shareon = () => {
   const shareonContainers = document.getElementsByClassName('shareon');
 
   // iterate over <div class="shareon">
@@ -115,6 +118,6 @@ const populate = () => {
   }
 };
 
-window.addEventListener('load', populate);
+window.addEventListener('load', shareon);
 
-export default populate;
+export default shareon;
diff --git a/package.json b/package.json
index 12dc5aa..498ae16 100644
--- a/package.json
+++ b/package.json
@@ -21,24 +21,27 @@
     "email": "nick@karamoff.dev",
     "url": "https://karamoff.dev"
   },
-	"type": "module",
-	"main": "./shareon.legacy.js",
-  "module": "./shareon.js",
+  "type": "module",
+  "main": "shareon.legacy.js",
+  "module": "shareon.js",
   "exports": {
-		"import": "./shareon.js"
+    "import": "./shareon.js"
   },
+	"types": "shareon.d.ts",
   "files": [
     "shareon.css",
     "shareon.css.map",
     "shareon.js",
     "shareon.js.map",
     "shareon.legacy.js",
-    "shareon.legacy.js.map"
+    "shareon.legacy.js.map",
+    "shareon.d.ts"
   ],
   "scripts": {
     "build-js": "esbuild lib/shareon.js --format=esm --minify --outfile=shareon.js --sourcemap --target=es6",
     "build-legacy-js": "esbuild lib/shareon.js --format=iife --minify --outfile=shareon.legacy.js --sourcemap --target=es6 --global-name=shareon",
     "build-css": "postcss lib/shareon.css --map --output shareon.css",
+		"build-types": "tsc lib/shareon.js --declaration --allowJs --emitDeclarationOnly --outDir .",
     "build": "run-p build-*",
     "lint": "eslint lib",
     "release": "np",
@@ -60,7 +63,8 @@
     "postcss-calc": "^8.0.0",
     "postcss-cli": "^8.3.1",
     "postcss-css-variables": "^0.18.0",
-    "size-limit": "^5.0.1"
+    "size-limit": "^5.0.1",
+    "typescript": "^4.3.5"
   },
   "size-limit": [
     {
diff --git a/yarn.lock b/yarn.lock
index 22563b8..8ee1efa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6037,6 +6037,11 @@ typedarray@^0.0.6:
   resolved "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
+typescript@^4.3.5:
+  version "4.3.5"
+  resolved "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz#4d1c37cc16e893973c45a06886b7113234f119f4"
+  integrity sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==
+
 unbox-primitive@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmjs.org/unbox-primitive/-/unbox-primitive-1.0.1.tgz#085e215625ec3162574dc8859abee78a59b14471"