docs: added reference for JS Client (#1629)

* added reference for JS Client

* added reference for JS Client

* added reference for JS Client

docs/content/references/js-client/interfaces/internal.CancelToken.md

@@ -0,0 +1,41 @@
+---
+displayed_sidebar: jsClientSidebar
+---
+
+# Interface: CancelToken
+
+[internal](../modules/internal.md).CancelToken
+
+## Properties
+
+### promise
+
+• **promise**: [`Promise`](../modules/internal.md#promise)<[`Cancel`](internal.Cancel.md)\>
+
+#### Defined in
+
+packages/medusa-js/node_modules/axios/index.d.ts:154
+
+___
+
+### reason
+
+• `Optional` **reason**: [`Cancel`](internal.Cancel.md)
+
+#### Defined in
+
+packages/medusa-js/node_modules/axios/index.d.ts:155
+
+## Methods
+
+### throwIfRequested
+
+▸ **throwIfRequested**(): `void`
+
+#### Returns
+
+`void`
+
+#### Defined in
+
+packages/medusa-js/node_modules/axios/index.d.ts:156