diff --git a/index.tsx b/index.tsx
index 740bdfb61..63d1a1836 100644
--- a/index.tsx
+++ b/index.tsx
@@ -86,7 +86,7 @@ export const html = (text: string, opts = {}) => {
   unimplemented('html export');
 };
 
-export const mdast = (text: string, opts = {}) => {
+export const mdast: any = (text: string, opts = {}) => {
   const processor = remark().use(remarkMdx);
 
   try {
diff --git a/package.json b/package.json
index b7c215225..1b7ebaf95 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,8 @@
     "dist"
   ],
   "scripts": {
-    "build": "webpack --mode production",
+    "build": "webpack --mode production && npm run build-types",
+    "build-types": "npx tsc --declaration --emitDeclarationOnly --declarationDir ./dist --skipLibCheck",
     "lint": "eslint . --ext .jsx --ext .js --ext .ts --ext .tsx",
     "release": "npx semantic-release",
     "release.dry": "npx semantic-release --dry-run",