# Class: Container<no value>
EFB Instance


### Methods


#### loadCss

▸ **loadCss**(`uri`): [`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)&lt;`void`&gt;

Load stylesheet


##### Parameters

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| Name  | Type     |
|:------|:---------|
| `uri` | `string` |

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[`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)&lt;`void`&gt;

Promise which is resolved when stylesheet is loaded or rejected if an error occur.


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#### loadJs

▸ **loadJs**(`uri`): [`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)&lt;`void`&gt;

Load script file


##### Parameters

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| Name  | Type     |
|:------|:---------|
| `uri` | `string` |

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[`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)&lt;`void`&gt;

Promise which is resolved when script is loaded or rejected if an error occur.


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#### use

▸ **use**&lt;`T`&gt;(`app`, `...options`): `this`

Register an app in EFB


##### Type parameters

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| Name | Type                        | Description              |
|:-----|:----------------------------|:-------------------------|
| `T`  | extends `object` = `object` | App registration options |

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##### Parameters

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| Name         | Type                                                                                                    | Description                                  |
|:-------------|:--------------------------------------------------------------------------------------------------------|:---------------------------------------------|
| `app`        | `AppConstructor`&lt;`T`&gt; \| [`App`](app/)&lt;`T`&gt;                                             | The app you wan't to register                |
| `...options` | [`Partial`](https://www.typescriptlang.org/docs/handbook/utility-types.html#partialtype)&lt;`T`&gt;\[\] | Options you'r app might need when installing |

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`this`

EFB instance

**`Throws`**

Throw an error if App install went wrong.