diff --git a/lib/index.d.mts b/lib/index.d.mts
new file mode 100644
index 0000000..0edde7f
--- /dev/null
+++ b/lib/index.d.mts
@@ -0,0 +1,3 @@
+export * from "./str.mjs";
+export * from "./nodes.mjs";
+export * from "./types.mjs";
diff --git a/lib/index.mjs b/lib/index.mjs
new file mode 100644
index 0000000..0edde7f
--- /dev/null
+++ b/lib/index.mjs
@@ -0,0 +1,3 @@
+export * from "./str.mjs";
+export * from "./nodes.mjs";
+export * from "./types.mjs";
diff --git a/lib/lang.d.mts b/lib/lang.d.mts
new file mode 100644
index 0000000..1f6e3c3
--- /dev/null
+++ b/lib/lang.d.mts
@@ -0,0 +1,5 @@
+export declare function isNil<T>(v: Nilable<T>): v is Nil;
+export declare type Nullable<T> = T | null;
+export declare type Nilable<T> = T | Nil;
+export declare type Nil = null | undefined;
+export declare function isBool(v: unknown): v is boolean;
diff --git a/lib/nodes.d.mts b/lib/nodes.d.mts
new file mode 100644
index 0000000..acbac54
--- /dev/null
+++ b/lib/nodes.d.mts
@@ -0,0 +1,30 @@
+import { Nilable } from "./lang.mjs";
+export declare type AnyNode = AnySyncNode | AnyAsyncNode;
+export declare type AnyAsyncNode = Promise<AnySyncNode>;
+export declare type AnySyncNode = TextNode | Elem | Frag;
+export declare class TextNode extends String {
+}
+export declare function F(children: AnyNode[]): Frag;
+export declare class Frag {
+    #private;
+    constructor();
+    get children(): Nilable<AnyNode[]>;
+    withText(text: string): this;
+    addText(text: string): void;
+    maybeWithChildren(nodes?: Nilable<AnyNode[]>): this;
+    withChildren(nodes: AnyNode[]): this;
+    withChild(node: AnyNode): this;
+    addChild(node: AnyNode): void;
+}
+export declare function E(tagName: string, attrs: ElemAttrs, children?: Nilable<AnyNode[]>): Elem;
+export declare type ElemAttrs = Record<string, unknown>;
+export declare class Elem extends Frag {
+    #private;
+    constructor(tagName: string);
+    get tagName(): string;
+    get attrs(): Record<string, unknown>;
+    withAttrs(attrs: Record<string, unknown>): Elem;
+    withAttr(name: string, value: unknown): Elem;
+    addAttr(name: string, value: unknown): void;
+    addChild(node: AnySyncNode): void;
+}
diff --git a/lib/str.d.mts b/lib/str.d.mts
new file mode 100644
index 0000000..c97add4
--- /dev/null
+++ b/lib/str.d.mts
@@ -0,0 +1,5 @@
+import { Renderer } from "./types.mjs";
+import { Elem } from "./nodes.mjs";
+export declare class StrRenderer implements Renderer<string> {
+    render(node: Elem | Promise<Elem>): Promise<string>;
+}
diff --git a/lib/types.d.mts b/lib/types.d.mts
new file mode 100644
index 0000000..fd25db7
--- /dev/null
+++ b/lib/types.d.mts
@@ -0,0 +1,4 @@
+import { Elem } from "./nodes.mjs";
+export interface Renderer<T> {
+    render(node: Elem | Promise<Elem>): Promise<T>;
+}
diff --git a/makefile b/makefile
index 8436e74..f01afd3 100644
--- a/makefile
+++ b/makefile
@@ -6,4 +6,4 @@ ts-w:
 	npx tsc-watch
 
 clean:
-	rm -rf target
+	rm -rf lib
diff --git a/package.json b/package.json
index 1c54e83..4a26304 100644
--- a/package.json
+++ b/package.json
@@ -1,4 +1,13 @@
 {
+  "name": "ren",
+  "description": "",
+  "version": "0.0.1",
+  "main": "lib/index.mjs",
+  "types": "lib/index.d.mts",
+  "directories": {
+    "lib": "lib",
+    "src": "src"
+  },
   "devDependencies": {
     "@types/node": "^17.0.21",
     "@typescript-eslint/eslint-plugin": "^5.14.0",
@@ -9,5 +18,15 @@
     "prettier": "^2.5.1",
     "tsc-watch": "^4.6.0",
     "typescript": "^4.6.2"
-  }
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/pleshevskiy/ren.git"
+  },
+  "author": "Dmitriy Pleshevskiy <dmitriy@ideascup.me>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/pleshevskiy/ren/issues"
+  },
+  "homepage": "https://github.com/pleshevskiy/ren#readme"
 }
diff --git a/src/index.mts b/src/index.mts
new file mode 100644
index 0000000..0edde7f
--- /dev/null
+++ b/src/index.mts
@@ -0,0 +1,3 @@
+export * from "./str.mjs";
+export * from "./nodes.mjs";
+export * from "./types.mjs";
diff --git a/tsconfig.json b/tsconfig.json
index f4674db..33398dc 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,6 +5,7 @@
     "module": "ESNext",
     "lib": ["dom", "esNext"],
     "moduleResolution": "node",
+    "declaration": true,
     "rootDir": "src",
     "forceConsistentCasingInFileNames": true,
     "suppressImplicitAnyIndexErrors": true,