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.PromiseLike.md

@@ -0,0 +1,45 @@
+---
+displayed_sidebar: jsClientSidebar
+---
+
+# Interface: PromiseLike<T\>
+
+[internal](../modules/internal.md).PromiseLike
+
+## Type parameters
+
+| Name |
+| :------ |
+| `T` |
+
+## Methods
+
+### then
+
+▸ **then**<`TResult1`, `TResult2`\>(`onfulfilled?`, `onrejected?`): [`PromiseLike`](internal.PromiseLike.md)<`TResult1` \| `TResult2`\>
+
+Attaches callbacks for the resolution and/or rejection of the Promise.
+
+#### Type parameters
+
+| Name | Type |
+| :------ | :------ |
+| `TResult1` | `T` |
+| `TResult2` | `never` |
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `onfulfilled?` | ``null`` \| (`value`: `T`) => `TResult1` \| [`PromiseLike`](internal.PromiseLike.md)<`TResult1`\> | The callback to execute when the Promise is resolved. |
+| `onrejected?` | ``null`` \| (`reason`: `any`) => `TResult2` \| [`PromiseLike`](internal.PromiseLike.md)<`TResult2`\> | The callback to execute when the Promise is rejected. |
+
+#### Returns
+
+[`PromiseLike`](internal.PromiseLike.md)<`TResult1` \| `TResult2`\>
+
+A Promise for the completion of which ever callback is executed.
+
+#### Defined in
+
+node_modules/typescript/lib/lib.es5.d.ts:1489