--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rollup.config.js	Fri Dec 27 21:26:55 2019 -0800
@@ -0,0 +1,20 @@
+import resolve from "@rollup/plugin-node-resolve";
+import typescript from "rollup-plugin-typescript2";
+import builtins from "rollup-plugin-node-builtins";
+
+export default {
+  input: "src/index.ts",
+  output: {
+    file: "build/bundle.js",
+    format: "esm",
+    intro: "const global = window;"
+  },
+  plugins: [
+    builtins(),
+    resolve({
+      extensions: [".js", ".ts"],
+      browser: true
+    }),
+    typescript()
+  ]
+};