@telegram-web-app/core
v0.0.1-beta.1
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Unofficial telegram web app for bots npm package. Based on https://telegram.org/js/telegram-web-app.js.
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@telegram-web-app/core
Unofficial telegram
web app for bots npm
package. Based on https://telegram.org/js/telegram-web-app.js
⚠️ Package is in beta release at the moment. It may contain some bugs and has lack of tests. Be careful and open issue if you find that something is wrong.
Table of contents
Installation
npm install @telegram-web-app/core
Usage
If you already followed original instruction and place https://telegram.org/js/telegram-web-app.js script in the
<head>
tag, be sure that you remove it before using this library.
TL;DR
import { TelegramWebAppContainer } from '@telegram-web-app/core';
const telegram = new TelegramWebAppContainer();
// When yor app is ready
telegram.WebApp.ready();
// You can use any properties/methods described in https://core.telegram.org/bots/webapps#initializing-web-apps
telegram.WebApp.version; // for example: '6.7'
Library exports TelegramWebAppContainer
class which returns instance of
Telegram
interface. It's contains two getters: WebApp
and WebView
, their interfaces fully compatible with original telegram
library
You can pass optional object with option exposeInMainWorld
(default to false
) to decide
whether to add or not Telegram
object to window
like the original library does.
import { TelegramWebAppContainer } from '@telegram-web-app/core';
const telegram = new TelegramWebAppContainer({ exposeInMainWorld: true });
Makes available window.Telegram
object with the following properties:
WebView
WebApp
Utils
TelegramGameProxy_receiveEvent
TelegramGameProxy
Imports
Library use nodejs
subpath exports. Because of that minimal required nodejs
version is
16.10.0
Available subpath imports:
errors
@telegram-web-app/core/errors
Contains custom errors throwed by the library.
Example:
import { WebAppBackgroundColorInvalidError } from '@telegram-web-app/core/errors';
types
@telegram-web-app/core/types
Contains all typescript types.
Example:
import { ThemeParams } from '@telegram-web-app/core/types';
Exceptions
In the original library when exception happens, code throws generic Error
class without some
useful information. For example:
if (!text.length) {
console.error('[Telegram.WebApp] Main button text is required', params.text);
throw Error('WebAppMainButtonParamInvalid');
}
Library throws custom errors instead of generic Error
in the original library.
All custom errors available through import from @telegram-web-app/core/errors
For example:
import { WebAppMainButtonParamInvalidError } from '@telegram-web-app/core/errors';
...
try {
telegram.WebApp.MainButton.setText(null) // only valid value type is string, so it's throws
} catch (e) {
if (e instanceof WebAppMainButtonParamInvalidError) {
// do something here
}
}
Table of all methods and setters that can throw custom errors:
| Method | Type | Errors |
| ----------------------------------------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------ |
| Telegram.WebApp.switchInlineQuery
| method | WebAppMethodUnsupportedError
, WebAppInlineModeDisabledError
, WebAppInlineQueryInvalidError
, WebAppInlineChooseChatTypeInvalidError
|
| Telegram.WebApp.openInvoice
| method | WebAppMethodUnsupportedError
|
| Telegram.WebApp.showPopup
| method | WebAppMethodUnsupportedError
, WebAppPopupOpenedError
, WebAppPopupParamInvalidError
|
| Telegram.WebApp.showAlert
| method | WebAppMethodUnsupportedError
,WebAppPopupOpenedError
, WebAppPopupParamInvalidError
|
| Telegram.WebApp.showConfirm
| method | WebAppMethodUnsupportedError
,WebAppPopupOpenedError
, WebAppPopupParamInvalidError
|
| Telegram.WebApp.showScanQrPopup
| method | WebAppMethodUnsupportedError
, WebAppScanQrPopupOpenedError
, WebAppScanQrPopupParamInvalidError
|
| Telegram.WebApp.closeScanQrPopup
| method | WebAppMethodUnsupportedError
|
| Telegram.WebApp.readTextFromClipboard
| method | WebAppMethodUnsupportedError
|
| Telegram.WebApp.setHeaderColor
| method | WebAppHeaderColorKeyInvalidError
|
| Telegram.WebApp.sendData
| method | WebAppDataInvalidError
|
| Telegram.WebApp.openLink
| method | WebAppTelegramUrlInvalidError
|
| Telegram.WebApp.openTelegramLink
| method | WebAppTelegramUrlInvalidError
|
| Telegram.WebApp.backgroundColor
| setter | WebAppBackgroundColorInvalidError
|
| Telegram.WebApp.HapticFeedback.impactOccurred
| method | WebAppHapticFeedbackTypeInvalidError
, WebAppHapticImpactStyleInvalidError
|
| Telegram.WebApp.HapticFeedback.notificationOccurred
| method | WebAppHapticFeedbackTypeInvalidError
, WebAppHapticNotificationTypeInvalidError
|
| Telegram.WebApp.HapticFeedback.selectionChanged
| method | WebAppHapticFeedbackTypeInvalidError
|
| Telegram.WebApp.MainButton.setParams
| method | WebAppMainButtonParamInvalidError
|
| Telegram.WebApp.MainButton.setText
| method | WebAppMainButtonParamInvalidError
|
| Telegram.WebApp.MainButton.isActive
| setter | WebAppMainButtonParamInvalidError
|
| Telegram.WebApp.MainButton.isVisible
| setter | WebAppMainButtonParamInvalidError
|
| Telegram.WebApp.MainButton.textColor
| setter | WebAppMainButtonParamInvalidError
|
| Telegram.WebApp.MainButton.color
| setter | WebAppMainButtonParamInvalidError
|
| Telegram.WebApp.MainButton.text
| setter | WebAppMainButtonParamInvalidError
|
Constants
Some constants available for your convenience. List of available constants:
TELEGRAM_HAPTIC_FEEDBACK
contains constants related toHapticFeedback
import { TELEGRAM_HAPTIC_FEEDBACK } from '@telegram-web-app/core';
TELEGRAM_MAIN_BUTTON
contains constants related toMainButton
import { TELEGRAM_MAIN_BUTTON } from '@telegram-web-app/core';
TELEGRAM_POPUP
contains constants related toPopup
import { TELEGRAM_POPUP } from '@telegram-web-app/core';
TELEGRAM_POPUP_BUTTON
contains constants related toPopupButton
import { TELEGRAM_POPUP_BUTTON } from '@telegram-web-app/core';
TELEGRAM_SCAN_QR_POPUP
contains constants related toPopupButton
import { TELEGRAM_SCAN_QR_POPUP } from '@telegram-web-app/core';
TELEGRAM_THEME
contains constants related toTheme
import { TELEGRAM_THEME } from '@telegram-web-app/core';
TELEGRAM_WEB_APP
contains constants related toWebApp
import { TELEGRAM_WEB_APP } from '@telegram-web-app/core';
TELEGRAM_WEB_VIEW
contains constants related toWebView
(no official docs)import { TELEGRAM_WEB_VIEW } from '@telegram-web-app/core';
Differences from the original library
- uses modern syntax(dist code builded in es2020 syntax)
- throws custom errors instead of generic
Error
in the original library - provides constants for your convenience