diff --git a/core/node.test.ts b/core/node.test.ts
index a249b7e..e69556d 100644
--- a/core/node.test.ts
+++ b/core/node.test.ts
@@ -1,6 +1,6 @@
 import { assertEquals, assertInstanceOf } from "testing/asserts.ts";
 
-import { E, Elem, F, Fragment, TextNode } from "./node.ts";
+import { Elem, Fragment, TextNode } from "./node.ts";
 
 Deno.test({
   name: "should create text node from string",
@@ -26,23 +26,6 @@ Deno.test({
   },
 });
 
-Deno.test({
-  name: "should create fragment via util",
-  fn: () => {
-    const el = E("p", [], "hello world");
-    const innerFrag = F(["inner"]);
-    const frag = F(["hello", innerFrag, "world", el]);
-
-    assertInstanceOf(frag, Fragment);
-    assertEquals(frag.children, [
-      new TextNode("hello"),
-      new TextNode("inner"),
-      new TextNode("world"),
-      el,
-    ]);
-  },
-});
-
 Deno.test({
   name: "should create element",
   fn: () => {
@@ -54,15 +37,3 @@ Deno.test({
     assertEquals(el.children, [child]);
   },
 });
-
-Deno.test({
-  name: "should create element via util",
-  fn: () => {
-    const child = E("p", [], "hello world");
-    const el = E("div", { class: "hello" }, [child]);
-
-    assertEquals(el.tagName, "div");
-    assertEquals(el.attrs, { class: "hello" });
-    assertEquals(el.children, [child]);
-  },
-});
diff --git a/core/node.ts b/core/node.ts
index 3f868b4..d3f1933 100644
--- a/core/node.ts
+++ b/core/node.ts
@@ -1,4 +1,4 @@
-import { isNotSkip, isNum, isStr, Nilable, Skipable, toArr } from "./utils.ts";
+import { Nilable } from "./utils.ts";
 
 export type Attrs = Record<string, string>;
 export type AnyNode = Fragment | FragmentNode;
@@ -72,41 +72,3 @@ export class Elem {
     this.#children = children ?? [];
   }
 }
-
-export function F(children: Skipable<EChild>[]): Fragment {
-  return new Fragment(
-    children.filter(isNotSkip).flatMap((c) =>
-      normFragmentChild(normElemChild(c))
-    ),
-  );
-}
-
-type EAttrs = Attrs | Attrs[];
-type ETextNode = string | number | TextNode;
-type EChild = ETextNode | Fragment | Elem;
-
-export function E(
-  tagName: ElemTagName,
-  attrs: EAttrs,
-  children?: ETextNode | Skipable<EChild>[],
-): Elem {
-  return new Elem(
-    tagName,
-    mergeAttrs(attrs ?? []),
-    toArr(children ?? []).filter(isNotSkip).map(normElemChild),
-  );
-}
-
-function mergeAttrs(attrs: EAttrs): Attrs {
-  return !Array.isArray(attrs)
-    ? attrs
-    : attrs.reduce((acc, attrs) => ({ ...acc, ...attrs }), {} as Attrs);
-}
-
-function normFragmentChild(node: AnyNode): FragmentNode | FragmentNode[] {
-  return isFragment(node) ? node.children : node;
-}
-
-function normElemChild(node: EChild): AnyNode {
-  return isStr(node) || isNum(node) ? new TextNode(String(node)) : node;
-}
diff --git a/ren/node.test.ts b/ren/node.test.ts
new file mode 100644
index 0000000..b5dc121
--- /dev/null
+++ b/ren/node.test.ts
@@ -0,0 +1,34 @@
+import { assertEquals, assertInstanceOf } from "testing/asserts.ts";
+import { Elem, Fragment, TextNode } from "../core/node.ts";
+
+import { E, F } from "./node.ts";
+
+Deno.test({
+  name: "should create fragment via util",
+  fn: () => {
+    const el = E("p", [], "hello world");
+    const innerFrag = F(["inner"]);
+    const frag = F(["hello", innerFrag, "world", el]);
+
+    assertInstanceOf(frag, Fragment);
+    assertEquals(frag.children, [
+      new TextNode("hello"),
+      new TextNode("inner"),
+      new TextNode("world"),
+      el,
+    ]);
+  },
+});
+
+Deno.test({
+  name: "should create element via util",
+  fn: () => {
+    const child = E("p", [], "hello world");
+    const el = E("div", { class: "hello" }, [child]);
+
+    assertInstanceOf(el, Elem);
+    assertEquals(el.tagName, "div");
+    assertEquals(el.attrs, { class: "hello" });
+    assertEquals(el.children, [child]);
+  },
+});
diff --git a/ren/node.ts b/ren/node.ts
new file mode 100644
index 0000000..e083070
--- /dev/null
+++ b/ren/node.ts
@@ -0,0 +1,49 @@
+import {
+  AnyNode,
+  Attrs,
+  Elem,
+  ElemTagName,
+  Fragment,
+  FragmentNode,
+  isFragment,
+  TextNode,
+} from "../core/node.ts";
+import { isNotSkip, isNum, isStr, Skipable, toArr } from "../core/utils.ts";
+
+export function F(children: Skipable<EChild>[]): Fragment {
+  return new Fragment(
+    children.filter(isNotSkip).flatMap((c) =>
+      normFragmentChild(normElemChild(c))
+    ),
+  );
+}
+
+type EAttrs = Attrs | Attrs[];
+type ETextNode = string | number | TextNode;
+type EChild = ETextNode | Fragment | Elem;
+
+export function E(
+  tagName: ElemTagName,
+  attrs: EAttrs,
+  children?: ETextNode | Skipable<EChild>[],
+): Elem {
+  return new Elem(
+    tagName,
+    mergeAttrs(attrs ?? []),
+    toArr(children ?? []).filter(isNotSkip).map(normElemChild),
+  );
+}
+
+function mergeAttrs(attrs: EAttrs): Attrs {
+  return !Array.isArray(attrs)
+    ? attrs
+    : attrs.reduce((acc, attrs) => ({ ...acc, ...attrs }), {} as Attrs);
+}
+
+function normFragmentChild(node: AnyNode): FragmentNode | FragmentNode[] {
+  return isFragment(node) ? node.children : node;
+}
+
+function normElemChild(node: EChild): AnyNode {
+  return isStr(node) || isNum(node) ? new TextNode(String(node)) : node;
+}