diff --git a/.changeset/nine-spies-attack.md b/.changeset/nine-spies-attack.md
new file mode 100644
index 0000000..3370b12
--- /dev/null
+++ b/.changeset/nine-spies-attack.md
@@ -0,0 +1,5 @@
+---
+"domco": patch
+---
+
+fix: reference on `DomcoConfig` and export `MaybePromise`
diff --git a/apps/docs/src/server/generated/globals.md b/apps/docs/src/server/generated/globals.md
index 23e1ff7..b5c7a4b 100644
--- a/apps/docs/src/server/generated/globals.md
+++ b/apps/docs/src/server/generated/globals.md
@@ -80,7 +80,7 @@ Passed into Vite `config.ssr.target`.
 
 #### Defined in
 
-[types/index.ts:58](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L58)
+[types/index.ts:60](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L60)
 
 ---
 
@@ -88,7 +88,7 @@ Passed into Vite `config.ssr.target`.
 
 ### AdapterBuilder()\<AdapterOptions\>
 
-> **AdapterBuilder**\<`AdapterOptions`\>: (`AdapterOptions`?) => `MaybePromise`\<[`Adapter`](globals.md#adapter)\>
+> **AdapterBuilder**\<`AdapterOptions`\>: (`AdapterOptions`?) => [`MaybePromise`](globals.md#maybepromiset)\<[`Adapter`](globals.md#adapter)\>
 
 Use this type to create your own adapter.
 Pass any options for the adapter in as a generic.
@@ -103,11 +103,11 @@ Pass any options for the adapter in as a generic.
 
 #### Returns
 
-`MaybePromise`\<[`Adapter`](globals.md#adapter)\>
+[`MaybePromise`](globals.md#maybepromiset)\<[`Adapter`](globals.md#adapter)\>
 
 #### Defined in
 
-[types/index.ts:88](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L88)
+[types/index.ts:90](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L90)
 
 ---
 
@@ -151,7 +151,7 @@ The name of the entry point without extension.
 
 #### Defined in
 
-[types/index.ts:42](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L42)
+[types/index.ts:44](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L44)
 
 ---
 
@@ -165,7 +165,7 @@ Middleware used in the Vite server for dev and preview.
 
 #### Defined in
 
-[types/index.ts:39](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L39)
+[types/index.ts:41](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L41)
 
 ---
 
@@ -193,7 +193,7 @@ Exports from the SSR `app` entry point.
 
 #### Defined in
 
-[types/index.ts:5](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L5)
+[types/index.ts:7](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L7)
 
 ---
 
@@ -250,7 +250,7 @@ export default defineConfig({
 
 #### Defined in
 
-[types/index.ts:114](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L114)
+[types/index.ts:116](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L116)
 
 ---
 
@@ -258,7 +258,7 @@ export default defineConfig({
 
 ### Handler()
 
-> **Handler**: (`req`) => `MaybePromise`\<`Response`\>
+> **Handler**: (`req`) => [`MaybePromise`](globals.md#maybepromiset)\<`Response`\>
 
 Request handler, takes a web request and returns a web response.
 
@@ -277,11 +277,29 @@ export const handler: Handler = async (req) => {
 
 #### Returns
 
-`MaybePromise`\<`Response`\>
+[`MaybePromise`](globals.md#maybepromiset)\<`Response`\>
 
 #### Defined in
 
-[types/index.ts:22](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L22)
+[types/index.ts:24](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L24)
+
+---
+
+<a id="maybepromiset" name="maybepromiset"></a>
+
+### MaybePromise\<T\>
+
+> **MaybePromise**\<`T`\>: `T` \| `Promise`\<`T`\>
+
+Helper type for a type that could be a promise.
+
+#### Type Parameters
+
+• **T**
+
+#### Defined in
+
+[types/index.ts:4](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L4)
 
 ---
 
@@ -304,7 +322,7 @@ export const prerender: Prerender = ["/", "/post-1", "/post-2"];
 
 #### Defined in
 
-[types/index.ts:36](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/types/index.ts#L36)
+[types/index.ts:38](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/types/index.ts#L38)
 
 ## Functions
 
@@ -321,6 +339,8 @@ to start using domco.
 
 • **domcoConfig**: [`DomcoConfig`](globals.md#domcoconfig) = `{}`
 
+Your domco config object.
+
 #### Returns
 
 `Promise`\<`Plugin`\<`any`\>[]\>
@@ -341,4 +361,4 @@ export default defineConfig({
 
 #### Defined in
 
-[plugin/index.ts:29](https://github.com/rossrobino/domco/blob/079c24a873dea21ac0e5db4ef90b4f223f824e4a/packages/domco/src/plugin/index.ts#L29)
+[plugin/index.ts:29](https://github.com/rossrobino/domco/blob/96bc88dd5cb595f98ceeaa40c8e6c0f3884cd45b/packages/domco/src/plugin/index.ts#L29)
diff --git a/packages/domco/src/listener/index.ts b/packages/domco/src/listener/index.ts
index eee76a8..a595fea 100644
--- a/packages/domco/src/listener/index.ts
+++ b/packages/domco/src/listener/index.ts
@@ -2,7 +2,7 @@
  * Adapted from https://github.com/mjackson/remix-the-web/blob/main/packages/node-fetch-server
  * to use as middleware: https://github.com/mjackson/remix-the-web/issues/13
  */
-import type { MaybePromise } from "../types/helper/index.js";
+import type { MaybePromise } from "../types/index.js";
 import type { ReadStream } from "node:fs";
 import type {
 	IncomingHttpHeaders,
diff --git a/packages/domco/src/plugin/index.ts b/packages/domco/src/plugin/index.ts
index 4f5a4a9..ff9c7bb 100644
--- a/packages/domco/src/plugin/index.ts
+++ b/packages/domco/src/plugin/index.ts
@@ -11,7 +11,7 @@ import type { Plugin } from "vite";
  * Creates domco Vite plugin, add to your `plugins` array within your `vite.config`
  * to start using domco.
  *
- * @param config Your domco config object.
+ * @param domcoConfig Your domco config object.
  * @returns The domco Vite plugin.
  *
  * @example
diff --git a/packages/domco/src/types/helper/index.ts b/packages/domco/src/types/helper/index.ts
deleted file mode 100644
index cda192b..0000000
--- a/packages/domco/src/types/helper/index.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-/** Helper type for a type that could be a promise. */
-export type MaybePromise<T> = T | Promise<T>;
diff --git a/packages/domco/src/types/index.ts b/packages/domco/src/types/index.ts
index e5fd1fc..ff66673 100644
--- a/packages/domco/src/types/index.ts
+++ b/packages/domco/src/types/index.ts
@@ -1,6 +1,8 @@
-import type { MaybePromise } from "./helper/index.js";
 import type { SSRTarget, SSROptions, Connect } from "vite";
 
+/** Helper type for a type that could be a promise. */
+export type MaybePromise<T> = T | Promise<T>;
+
 /** Exports from the SSR `app` entry point. */
 export type AppModule = {
 	handler: Handler;
diff --git a/packages/domco/src/version/index.ts b/packages/domco/src/version/index.ts
index e5ae2a9..a693ce1 100644
--- a/packages/domco/src/version/index.ts
+++ b/packages/domco/src/version/index.ts
@@ -1 +1 @@
-export const version = "0.12.0";
+export const version = "0.13.0";
diff --git a/packages/domco/typedoc.config.js b/packages/domco/typedoc.config.js
index fc41699..ff921c8 100644
--- a/packages/domco/typedoc.config.js
+++ b/packages/domco/typedoc.config.js
@@ -1,14 +1,19 @@
 /** @import { TypeDocOptions } from "typedoc" */
 /** @import { PluginOptions } from "typedoc-plugin-markdown" */
 
-/** @type {Partial<TypeDocOptions & PluginOptions>} */
-export default {
-	entryPoints: ["src/index.ts"],
-	out: "../../apps/docs/src/server/generated",
-
+/** @type {PluginOptions} */
+const markdownOptions = {
 	plugin: ["typedoc-plugin-markdown"],
 	outputFileStrategy: "modules",
 	hidePageHeader: true,
 	hidePageTitle: true,
 	useHTMLAnchors: true,
 };
+
+/** @type {Partial<TypeDocOptions & PluginOptions>} */
+export default {
+	entryPoints: ["src/index.ts"],
+	out: "../../apps/docs/src/server/generated",
+	plugin: ["typedoc-plugin-markdown"],
+	...markdownOptions,
+};