> For the complete documentation index, see [llms.txt](https://painor.gitbook.io/gramjs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://painor.gitbook.io/gramjs/working-with-localization-packs/langpack.getdifference.md).

# langpack.getDifference

Get new strings in languagepack

## Example

{% tabs %}
{% tab title="Javascript" %}

```javascript
const {Api, TelegramClient} = require('telegram');
const {StringSession} = require('telegram/sessions');

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result = await client.invoke(new Api.langpack.getDifference({
        langPack: 'random string here',
        langCode: 'random string here',
        fromVersion: 5301681,
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}

{% tab title="TypeScript" %}

```typescript
import {Api, TelegramClient} from 'telegram';
import {StringSession} from 'telegram/sessions';

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result: Api.LangPackDifference = await client.invoke(new Api.langpack.getDifference({
        langPack: 'random string here',
        langCode: 'random string here',
        fromVersion: 5301681,
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}
{% endtabs %}

## TL schema

```
langPackDifference#f385c1f6 lang_code:string from_version:int version:int strings:Vector<LangPackString> = LangPackDifference;
---functions---
langpack.getDifference#cd984aa5 lang_pack:string lang_code:string from_version:int = LangPackDifference;
```

## Parameters

|        Name       | Type                                            | Description                        |
| :---------------: | ----------------------------------------------- | ---------------------------------- |
|   **lang\_pack**  | [string](https://core.telegram.org/type/string) | Language pack                      |
|   **lang\_code**  | [string](https://core.telegram.org/type/string) | Language code                      |
| **from\_version** | [int](https://core.telegram.org/type/int)       | Previous localization pack version |

## Result

[LangPackDifference](https://core.telegram.org/type/LangPackDifference)

## Possible errors

| Code | Type                | Description                           |
| :--: | ------------------- | ------------------------------------- |
|  400 | LANG\_PACK\_INVALID | The provided language pack is invalid |

## Can bots use this methd ?

### yes

## Related pages