chore(docs): Generated JS Client Reference (#5334)

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Co-authored-by: Shahed Nasser <27354907+shahednasser@users.noreply.github.com>

www/apps/docs/content/references/js-client/classes/internal-8.internal.MiddlewareService.md

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+---
+displayed_sidebar: jsClientSidebar
+---
+
+# Class: MiddlewareService
+
+[internal](../modules/internal-8.md).[internal](../modules/internal-8.internal.md).MiddlewareService
+
+Orchestrates dynamic middleware registered through the Medusa Middleware API
+
+## Properties
+
+### postAuthentication\_
+
+• `Protected` `Readonly` **postAuthentication\_**: [`middlewareType`](../modules/internal-8.md#middlewaretype)[]
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:11
+
+___
+
+### preAuthentication\_
+
+• `Protected` `Readonly` **preAuthentication\_**: [`middlewareType`](../modules/internal-8.md#middlewaretype)[]
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:12
+
+___
+
+### preCartCreation\_
+
+• `Protected` `Readonly` **preCartCreation\_**: `RequestHandler`<`ParamsDictionary`, `any`, `any`, `ParsedQs`, [`Record`](../modules/internal.md#record)<`string`, `any`\>\>[]
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:13
+
+___
+
+### routers
+
+• `Protected` `Readonly` **routers**: [`Record`](../modules/internal.md#record)<`string`, `Router`[]\>
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:14
+
+## Methods
+
+### addPostAuthentication
+
+▸ **addPostAuthentication**(`middleware`, `options`): `void`
+
+Adds a middleware function to be called after authentication is completed.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `middleware` | [`middlewareHandlerType`](../modules/internal-8.md#middlewarehandlertype) | the middleware function. Should return a middleware function. |
+| `options` | [`Record`](../modules/internal.md#record)<`string`, `unknown`\> | the arguments that will be passed to the middleware |
+
+#### Returns
+
+`void`
+
+void
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:32
+
+___
+
+### addPreAuthentication
+
+▸ **addPreAuthentication**(`middleware`, `options`): `void`
+
+Adds a middleware function to be called before authentication is completed.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `middleware` | [`middlewareHandlerType`](../modules/internal-8.md#middlewarehandlertype) | the middleware function. Should return a middleware function. |
+| `options` | [`Record`](../modules/internal.md#record)<`string`, `unknown`\> | the arguments that will be passed to the middleware |
+
+#### Returns
+
+`void`
+
+void
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:41
+
+___
+
+### addPreCartCreation
+
+▸ **addPreCartCreation**(`middleware`): `void`
+
+Adds a middleware function to be called before cart creation
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `middleware` | `RequestHandler`<`ParamsDictionary`, `any`, `any`, `ParsedQs`, [`Record`](../modules/internal.md#record)<`string`, `any`\>\> | the middleware function. Should return a middleware function. |
+
+#### Returns
+
+`void`
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:48
+
+___
+
+### addRouter
+
+▸ **addRouter**(`path`, `router`): `void`
+
+#### Parameters
+
+| Name | Type |
+| :------ | :------ |
+| `path` | `string` |
+| `router` | `Router` |
+
+#### Returns
+
+`void`
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:16
+
+___
+
+### getRouters
+
+▸ **getRouters**(`path`): `Router`[]
+
+#### Parameters
+
+| Name | Type |
+| :------ | :------ |
+| `path` | `string` |
+
+#### Returns
+
+`Router`[]
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:17
+
+___
+
+### usePostAuthentication
+
+▸ **usePostAuthentication**(`app`): `void`
+
+Adds post authentication middleware to an express app.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `app` | `Router` | the express app to add the middleware to |
+
+#### Returns
+
+`void`
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:54
+
+___
+
+### usePreAuthentication
+
+▸ **usePreAuthentication**(`app`): `void`
+
+Adds pre authentication middleware to an express app.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `app` | `Router` | the express app to add the middleware to |
+
+#### Returns
+
+`void`
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:60
+
+___
+
+### usePreCartCreation
+
+▸ **usePreCartCreation**(): `RequestHandler`<`ParamsDictionary`, `any`, `any`, `ParsedQs`, [`Record`](../modules/internal.md#record)<`string`, `any`\>\>[]
+
+#### Returns
+
+`RequestHandler`<`ParamsDictionary`, `any`, `any`, `ParsedQs`, [`Record`](../modules/internal.md#record)<`string`, `any`\>\>[]
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:61
+
+___
+
+### validateMiddleware\_
+
+▸ **validateMiddleware_**(`fn`): `void`
+
+Validates a middleware function, throws if fn is not of type function.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `fn` | `unknown` | the middleware function to validate. |
+
+#### Returns
+
+`void`
+
+nothing if the middleware is a function
+
+#### Defined in
+
+packages/medusa/dist/services/middleware.d.ts:23