diff --git a/CHANGELOG.md b/CHANGELOG.md
index c43930c..7695156 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+# [0.7.0](https://github.com/dropecho/lib_example/compare/0.6.8...0.7.0) (2022-12-03)
+
+
+### Features
+
+* setup esm and cjs builds. ([fc3f381](https://github.com/dropecho/lib_example/commit/fc3f381a3e7f59f4f8fab9f4efb6a22585856a7f))
+
 ## [0.6.8](https://github.com/dropecho/lib_example/compare/0.6.7...0.6.8) (2022-12-03)
 
 
diff --git a/dist/js/cjs/index.js b/dist/js/cjs/index.js
new file mode 100644
index 0000000..254c04b
--- /dev/null
+++ b/dist/js/cjs/index.js
@@ -0,0 +1,34 @@
+(function ($hx_exports, $global) { "use strict";
+$hx_exports["dropecho"] = $hx_exports["dropecho"] || {};
+$hx_exports["dropecho"]["lib_example"] = $hx_exports["dropecho"]["lib_example"] || {};
+class dropecho_lib_$example_LibExample {
+	static test() {
+		console.log("src/dropecho/lib_example/LibExample.hx:6:","hello world.");
+		return 2;
+	}
+}
+$hx_exports["dropecho"]["lib_example"]["LibExample"] = dropecho_lib_$example_LibExample;
+class dropecho_lib_$example_OtherExample {
+	constructor() {
+		this.x = 0;
+	}
+	banana(b) {
+		return b + 5 + this.x;
+	}
+}
+$hx_exports["dropecho"]["lib_example"]["OtherExample"] = dropecho_lib_$example_OtherExample;
+class haxe_iterators_ArrayIterator {
+	constructor(array) {
+		this.current = 0;
+		this.array = array;
+	}
+	hasNext() {
+		return this.current < this.array.length;
+	}
+	next() {
+		return this.array[this.current++];
+	}
+}
+{
+}
+})(typeof exports != "undefined" ? exports : typeof window != "undefined" ? window : typeof self != "undefined" ? self : this, {});
diff --git a/dist/js/esm/Std.js b/dist/js/esm/Std.js
new file mode 100644
index 0000000..e93cc86
--- /dev/null
+++ b/dist/js/esm/Std.js
@@ -0,0 +1,18 @@
+import {Register} from "./genes/Register.js"
+
+/**
+The Std class provides standard methods for manipulating basic types.
+*/
+export const Std = Register.global("$hxClasses")["Std"] = 
+class Std {
+	static get __name__() {
+		return "Std"
+	}
+	get __class__() {
+		return Std
+	}
+}
+
+
+;{
+}
diff --git a/dist/js/esm/dropecho/lib_example/LibExample.js b/dist/js/esm/dropecho/lib_example/LibExample.js
new file mode 100644
index 0000000..e85f904
--- /dev/null
+++ b/dist/js/esm/dropecho/lib_example/LibExample.js
@@ -0,0 +1,16 @@
+import {Register} from "../../genes/Register.js"
+
+export const LibExample = Register.global("$hxClasses")["dropecho.lib_example.LibExample"] = 
+class LibExample {
+	static test() {
+		console.log("src/dropecho/lib_example/LibExample.hx:6:","hello world.");
+		return 2;
+	}
+	static get __name__() {
+		return "dropecho.lib_example.LibExample"
+	}
+	get __class__() {
+		return LibExample
+	}
+}
+
diff --git a/dist/js/esm/dropecho/lib_example/OtherExample.js b/dist/js/esm/dropecho/lib_example/OtherExample.js
new file mode 100644
index 0000000..37ac665
--- /dev/null
+++ b/dist/js/esm/dropecho/lib_example/OtherExample.js
@@ -0,0 +1,18 @@
+import {Register} from "../../genes/Register.js"
+
+export const OtherExample = Register.global("$hxClasses")["dropecho.lib_example.OtherExample"] = 
+class OtherExample extends Register.inherits() {
+	new() {
+		this.x = 0;
+	}
+	banana(b) {
+		return b + 5 + this.x;
+	}
+	static get __name__() {
+		return "dropecho.lib_example.OtherExample"
+	}
+	get __class__() {
+		return OtherExample
+	}
+}
+
diff --git a/dist/js/esm/genes/Register.js b/dist/js/esm/genes/Register.js
new file mode 100644
index 0000000..e315926
--- /dev/null
+++ b/dist/js/esm/genes/Register.js
@@ -0,0 +1,107 @@
+
+export class Register {
+	static global(name) {
+		if (Register.globals[name]) {
+			return Register.globals[name];
+		} else {
+			return Register.globals[name] = {};
+		};
+	}
+	static createStatic(obj, name, get) {
+		var value = null;
+		Object.defineProperty(obj, name, {"enumerable": true, "get": function () {
+			if (get != null) {
+				value = get();
+				get = null;
+			};
+			return value;
+		}, "set": function (v) {
+			if (get != null) {
+				value = get();
+				get = null;
+			};
+			value = v;
+		}});
+	}
+	static iter(a) {
+		if (!Array.isArray(a)) {
+			return a.iterator();
+		} else {
+			return {"cur": 0, "arr": a, "hasNext": function () {
+				return this.cur < this.arr.length;
+			}, "next": function () {
+				return this.arr[this.cur++];
+			}};
+		};
+	}
+	static extend(superClass) {
+		
+      function res() {
+        this.new.apply(this, arguments)
+      }
+      Object.setPrototypeOf(res.prototype, superClass.prototype)
+      return res
+    ;
+	}
+	static inherits(resolve, defer) {
+		if (defer == null) {
+			defer = false;
+		};
+		
+      function res() {
+        if (defer && resolve && res.__init__) res.__init__()
+        this.new.apply(this, arguments)
+      }
+      if (!defer) {
+        if (resolve && resolve.__init__) {
+          defer = true
+          res.__init__ = () => {
+            resolve.__init__()
+            Object.setPrototypeOf(res.prototype, resolve.prototype)
+            res.__init__ = undefined
+          } 
+        } else if (resolve) {
+          Object.setPrototypeOf(res.prototype, resolve.prototype)
+        }
+      } else {
+        res.__init__ = () => {
+          const superClass = resolve()
+          if (superClass.__init__) superClass.__init__()
+          Object.setPrototypeOf(res.prototype, superClass.prototype)
+          res.__init__ = undefined
+        } 
+      }
+      return res
+    ;
+	}
+	static bind(o, m) {
+		if (m == null) {
+			return null;
+		};
+		if (m.__id__ == null) {
+			m.__id__ = Register.fid++;
+		};
+		var f = null;
+		if (o.hx__closures__ == null) {
+			o.hx__closures__ = {};
+		} else {
+			f = o.hx__closures__[m.__id__];
+		};
+		if (f == null) {
+			f = m.bind(o);
+			o.hx__closures__[m.__id__] = f;
+		};
+		return f;
+	}
+	static get __name__() {
+		return "genes.Register"
+	}
+	get __class__() {
+		return Register
+	}
+}
+
+
+Register.$global = typeof window != "undefined" ? window : typeof global != "undefined" ? global : typeof self != "undefined" ? self : undefined
+Register.globals = {}
+Register.fid = 0
\ No newline at end of file
diff --git a/dist/js/esm/haxe/iterators/ArrayIterator.js b/dist/js/esm/haxe/iterators/ArrayIterator.js
new file mode 100644
index 0000000..34850ba
--- /dev/null
+++ b/dist/js/esm/haxe/iterators/ArrayIterator.js
@@ -0,0 +1,33 @@
+import {Register} from "../../genes/Register.js"
+
+/**
+This iterator is used only when `Array<T>` is passed to `Iterable<T>`
+*/
+export const ArrayIterator = Register.global("$hxClasses")["haxe.iterators.ArrayIterator"] = 
+class ArrayIterator extends Register.inherits() {
+	new(array) {
+		this.current = 0;
+		this.array = array;
+	}
+	
+	/**
+	See `Iterator.hasNext`
+	*/
+	hasNext() {
+		return this.current < this.array.length;
+	}
+	
+	/**
+	See `Iterator.next`
+	*/
+	next() {
+		return this.array[this.current++];
+	}
+	static get __name__() {
+		return "haxe.iterators.ArrayIterator"
+	}
+	get __class__() {
+		return ArrayIterator
+	}
+}
+
diff --git a/dist/js/esm/index.js b/dist/js/esm/index.js
new file mode 100644
index 0000000..8161101
--- /dev/null
+++ b/dist/js/esm/index.js
@@ -0,0 +1,4 @@
+import {Register} from "./genes/Register.js"
+
+export {OtherExample} from "./dropecho/lib_example/OtherExample.js"
+export {LibExample} from "./dropecho/lib_example/LibExample.js"
\ No newline at end of file
diff --git a/haxelib.json b/haxelib.json
index 6bb1779..17a4aa0 100644
--- a/haxelib.json
+++ b/haxelib.json
@@ -10,8 +10,8 @@
   "contributors": [
     "vantreeseba"
   ],
-  "version": "0.6.8",
-  "releasenote": "Release version 0.6.8. See CHANGELOG.md for details.",
+  "version": "0.7.0",
+  "releasenote": "Release version 0.7.0. See CHANGELOG.md for details.",
   "tags": [
     "example"
   ],
diff --git a/package.json b/package.json
index dfb540b..4935edd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dropecho/lib_example",
-  "version": "0.6.8",
+  "version": "0.7.0",
   "description": "An example haxelib that outputs to multiple targets.",
   "author": "vantreeseba <vantreeseba@gmail.com>",
   "repository": "github:dropecho/lib_example",