diff --git a/package.json b/package.json
index 4caa507..a0271c2 100644
--- a/package.json
+++ b/package.json
@@ -2,10 +2,10 @@
   "name": "bip174",
   "version": "1.0.0",
   "description": "",
-  "main": "src/lib/psbt.js",
-  "types": "src/lib/psbt.d.ts",
+  "main": "src/index.js",
+  "types": "src/index.d.ts",
   "files": [
-    "src/lib"
+    "src"
   ],
   "engines": {
     "node": ">=8.0.0"
diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100644
index 0000000..fa5cd94
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,6 @@
+import { Psbt } from './lib/psbt';
+import * as utils from './lib/utils';
+import * as varint from './lib/converter/varint';
+export { Psbt, utils, varint };
+export * from './lib/interfaces';
+export * from './lib/typeFields';
diff --git a/src/index.js b/src/index.js
new file mode 100644
index 0000000..6181352
--- /dev/null
+++ b/src/index.js
@@ -0,0 +1,12 @@
+'use strict';
+function __export(m) {
+  for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];
+}
+Object.defineProperty(exports, '__esModule', { value: true });
+const psbt_1 = require('./lib/psbt');
+exports.Psbt = psbt_1.Psbt;
+const utils = require('./lib/utils');
+exports.utils = utils;
+const varint = require('./lib/converter/varint');
+exports.varint = varint;
+__export(require('./lib/typeFields'));
diff --git a/ts_src/index.ts b/ts_src/index.ts
new file mode 100644
index 0000000..5161d49
--- /dev/null
+++ b/ts_src/index.ts
@@ -0,0 +1,7 @@
+import { Psbt } from './lib/psbt'
+import * as utils from './lib/utils'
+import * as varint from './lib/converter/varint';
+ 
+export { Psbt, utils, varint }
+export * from './lib/interfaces'
+export * from './lib/typeFields'