Mini Apps Integration

Official Telegram Mini Apps Documentation

Field Mapping

Field	Composable
initData	useWebApp
initDataUnsafe	useWebApp
version	useWebApp
platform	useWebApp
colorScheme	useWebAppTheme
themeParams	useWebAppTheme
isExpanded	useWebAppViewport
viewportHeight	useWebAppViewport
viewportStableHeight	useWebAppViewport
headerColor	useWebAppTheme
backgroundColor	useWebAppTheme
isClosingConfirmationEnabled	useWebAppClosingConfirmation
isVerticalSwipesEnabled	useWebAppViewport
BackButton	useWebAppBackButton
MainButton	useWebAppMainButton
HapticFeedback	useWebAppHapticFeedback
BiometricManager	useWebAppBiometricManager
isVersionAtLeast	useWebApp
setHeaderColor	useWebAppTheme
setBackgroundColor	useWebAppTheme
enableClosingConfirmation	useWebAppClosingConfirmation
disableClosingConfirmation	useWebAppClosingConfirmation
enableVerticalSwipes	useWebAppViewport
disableVerticalSwipes	useWebAppViewport
onEvent	useWebApp
offEvent	Handled automagically 🪄
sendData	useWebApp
switchInlineQuery	useWebAppNavigation
openLink	useWebAppNavigation
openTelegramLink	useWebAppNavigation
openInvoice	useWebAppNavigation
shareToStory	useWebAppShare
showPopup	useWebAppPopup
showAlert	useWebAppPopup
showConfirm	useWebAppPopup
showScanQrPopup	useWebAppQrScanner
closeScanQrPopup	useWebAppQrScanner
readTextFromClipboard	useWebAppClipboard
requestWriteAccess	useWebAppRequests
requestContact	useWebAppRequests
ready	useWebApp
expand	useWebAppViewport
close	useWebApp

Event Handling

The package provides a set of functions for event handling. By convention, the name of the functions consists of the prefix on + the name of the Telegram event in camelCase. So themeChanged event turns into onThemeChanged and so on. onEvent is also available if you prefer it instead.

import { useWebAppTheme } from 'vue-tg'

const { onThemeChanged } = useWebAppTheme()

onThemeChanged(() => {
  // handle theme update
})

Mapping

Event name	Handler
themeChanged	useWebAppTheme → onThemeChanged
viewportChanged	useWebAppViewport → onViewportChanged
mainButtonClicked	useWebAppMainButton → onMainButtonClicked
backButtonClicked	useWebAppBackButton → onBackButtonClicked
settingsButtonClicked	useWebAppSettingsButton → onSettingsButtonClicked
invoiceClosed	useWebAppNavigation → onInvoiceClosed
popupClosed	useWebAppPopup → onPopupClosed
qrTextReceived	useWebAppQrScanner → onQrTextReceived
scanQrPopupClosed	useWebAppQrScanner → onScanQrPopupClosed
clipboardTextReceived	useWebAppClipboard → onClipboardTextReceived
writeAccessRequested	useWebAppRequests → onWriteAccessRequested
contactRequested	useWebAppRequests → onContactRequested
biometricManagerUpdated	useWebAppBiometricManager → onBiometricManagerUpdated
biometricAuthRequested	useWebAppBiometricManager → onBiometricAuthRequested
biometricTokenUpdated	useWebAppBiometricManager → onBiometricTokenUpdated

Managing event subscriptions

By default, event handlers are automatically unsubscribed when the component is unmounted. But you can unsubscribe before that if you need to:

import { useWebAppTheme } from 'vue-tg'

const { onThemeChanged } = useWebAppTheme()

const handler = onThemeChanged(() => {
  // handle theme update
})

// unsubscribe
handler.off()

You can also disable automatic unsubscribing completely:

import { useWebAppTheme } from 'vue-tg'

const { onThemeChanged } = useWebAppTheme()

const handler = onThemeChanged(
  () => {
    // handle theme update
  },
  { manual: true },  
)

// unsubscribe
handler.off()

WARNING

Please note that in manual mode, you are responsible for managing subscription. If subscription is not managed properly, it can lead to memory leaks and other issues.

Components

Alert

A component that shows message in a simple alert with a 'Close' button when is rendered.

<script lang="ts" setup>
import { Alert } from 'vue-tg'

function handleAlertClose() {
  // ...
}
</script>

<template>
  <Alert message="Hello!" @close="handleAlertClose" />
</template>

Props

Name	Type	Required	Description
message	string	true	The message to be displayed in the body of the alert popup.

Events

Name	Type	Description
close	() => void	Emits when the opened popup is closed.

BackButton

A component that enables the back button when is rendered.

<script lang="ts" setup>
import { BackButton } from 'vue-tg'

function handleBackButton() {
  // ...
}
</script>

<template>
  <BackButton @click="handleBackButton" />
</template>

Props

Name	Type	Required	Description
visible	boolean	false	Shows whether the button is visible. Set to true by default.

Events

Name	Type	Description
click	() => void	Emits when the back button is pressed.

BiometricManager

A component that init the biometric manager when is rendered.

<script lang="ts" setup>
import { BiometricManager } from 'vue-tg'
  
const handleInit = () => {
  // ...
}
</script>

<template>
  <BiometricManager @init="handleInit" />
</template>

Events

Name	Type	Description
init	() => void	Emits when the biometric manager is init.

ClosingConfirmation

A component that enables the confirmation dialog while the user is trying to close the Mini App.

<script lang="ts" setup>
import { ClosingConfirmation } from 'vue-tg'
</script>

<template>
  <ClosingConfirmation />
</template>

Confirm

A component that shows message in a simple confirmation window with 'OK' and 'Cancel' buttons when is rendered.

<script lang="ts" setup>
import { Confirm } from 'vue-tg'

function handleConfirmClose(ok: boolean) {
  // ...
}
</script>

<template>
  <Confirm message="Hello?" @close="handleConfirmClose" />
</template>

Props

Name	Type	Required	Description
message	string	true	The message to be displayed in the body of the confirm popup.

Events

Name	Type	Description
close	(ok: boolean) => void	Emits when the opened popup is closed.

ExpandedViewport

A component that expands the Mini App to the maximum available height when is rendered.

<script lang="ts" setup>
import { ExpandedViewport } from 'vue-tg'
</script>

<template>
  <ExpandedViewport />
</template>

Props

Name	Type	Required	Description
force	boolean	false	Expands the viewport despite user interaction. Disables vertical swipes if supported. Set to false by default.

MainButton

A component that enables the main button when is rendered.

<script lang="ts" setup>
import { MainButton } from 'vue-tg'

function handleMainButton() {
  // ...
}
</script>

<template>
  <MainButton @click="handleMainButton" />
</template>

Props

Name	Type	Required	Description
visible	boolean	false	Shows whether the button is visible. Set to true by default.
disabled	boolean	false	Shows whether the button is disable.
progress	boolean	false	Shows whether the button is displaying a loading indicator.
text	string	false	Current button text.
color	string	false	Current button color.
textColor	string	false	Current button text color.

Events

Name	Type	Description
click	() => void	Emits when the main button is pressed.

Popup

A component that shows a native popup when is rendered.

<script lang="ts" setup>
import { Popup } from 'vue-tg'

function handlePopupClose(buttonId: string) {
  // ...
}
</script>

<template>
  <Popup message="Hello" @close="handlePopupClose" />
</template>

Props

Name	Type	Required	Description
message	string	true	The message to be displayed in the body of the popup.
title	string	false	The text to be displayed in the popup title.
buttons	PopupButton[] ↗	false	List of buttons to be displayed in the popup.

Events

Name	Type	Description
close	(buttonId: string) => void	Emits when the opened popup is closed.

ScanQr

A component that shows a native popup for scanning a QR code when is rendered.

<script lang="ts" setup>
import { ScanQr } from 'vue-tg'

function handleScanResult(data: string) {
  // ...
}
</script>

<template>
  <ScanQr @result="handleScanResult" />
</template>

Props

Name	Type	Required	Description
text	string	false	The text to be displayed under the 'Scan QR' heading.

Events

Name	Type	Description
result	(data: string) => void	Emits when the QR code scanner catches a code with text data.

SettingsButton

A component that enables the settings button when is rendered.

<script lang="ts" setup>
import { SettingsButton } from 'vue-tg'

function handleSettingsButton() {
  // ...
}
</script>

<template>
  <SettingsButton @click="handleSettingsButton" />
</template>

Props

Name	Type	Required	Description
visible	boolean	false	Shows whether the button is visible. Set to true by default.

Events

Name	Type	Description
click	() => void	Emits when the settings button is pressed.

Composables

useWebApp

// Hover to inspect type
import { useWebApp } from 'vue-tg'

Name	Description
initData	A string with raw data transferred to the Mini App, convenient for validating data. WARNING: Validate data from this field before using it on the bot's server.
initDataUnsafe	An object with input data transferred to the Mini App. WARNING: Data from this field should not be trusted. You should only use data from initData on the bot's server and only after it has been validated.
version	The version of the Bot API available in the user's Telegram app.
platform	The name of the platform of the user's Telegram app.
isVersionAtLeast	Returns true if the user's app supports a version of the Bot API that is equal to or higher than the version passed as the parameter.
onEvent	A method that sets the app event handler. Check the list of available events.
sendData	A method used to send data to the bot. When this method is called, a service message is sent to the bot containing the data data of the length up to 4096 bytes, and the Mini App is closed. See the field web_app_data in the class Message. This method is only available for Mini Apps launched via a Keyboard button.
ready	A method that informs the Telegram app that the Mini App is ready to be displayed. It is recommended to call this method as early as possible, as soon as all essential interface elements are loaded. Once this method is called, the loading placeholder is hidden and the Mini App is shown. If the method is not called, the placeholder will be hidden only when the page is fully loaded.
close	A method that closes the Mini App.
isReady	Boolean indicating if the app is ready. 🔋 custom⚡️ readonly reactive
isPlatform	Function to check if the app is running on a specified platform. 🔋 custom
isPlatformUnknown	Boolean indicating if the platform is unknown. 🔋 custom
isFeatureSupported	Function to check if a specified feature is supported. 🔋 custom

useWebAppBackButton

// Hover to inspect type
import { useWebAppBackButton } from 'vue-tg'

Name	Description
isBackButtonVisible	Shows whether the button is visible. Set to false by default. ⚡️ reactive
onBackButtonClicked	Bot API 6.1+ A method that sets the backButtonClicked event handler.
showBackButton	Bot API 6.1+ A method to make the button active and visible.
hideBackButton	Bot API 6.1+ A method to hide the button.

useWebAppBiometricManager

// Hover to inspect type
import { useWebAppBiometricManager } from 'vue-tg'

Name	Type
isBiometricInited	Shows whether biometrics object is initialized. ⚡️ readonly reactive
isBiometricAvailable	Shows whether biometrics is available on the current device. ⚡️ readonly reactive
biometricType	The type of biometrics currently available on the device. Can be one of these values: - finger, fingerprint-based biometrics, - face, face-based biometrics, - unknown, biometrics of an unknown type. ⚡️ readonly reactive
isBiometricAccessRequested	Shows whether permission to use biometrics has been requested. ⚡️ readonly reactive
isBiometricAccessGranted	Shows whether permission to use biometrics has been granted. ⚡️ readonly reactive
isBiometricTokenSaved	Shows whether the token is saved in secure storage on the device. ⚡️ readonly reactive
biometricDeviceId	A unique device identifier that can be used to match the token to the device. ⚡️ readonly reactive
initBiometric	Bot API 7.2+ A method that initializes the BiometricManager object. It should be called before the object's first use. If an optional callback parameter was passed, the callback function will be called when the object is initialized.
requestBiometricAccess	Bot API 7.2+ A method that requests permission to use biometrics according to the params argument of type BiometricRequestAccessParams. If an optional callback parameter was passed, the callback function will be called and the first argument will be a boolean indicating whether the user granted access.
authenticateBiometric	Bot API 7.2+ A method that authenticates the user using biometrics according to the params argument of type BiometricAuthenticateParams. If an optional callback parameter was passed, the callback function will be called and the first argument will be a boolean indicating whether the user authenticated successfully. If so, the second argument will be a biometric token.
updateBiometricToken	Bot API 7.2+ A method that updates the biometric token in secure storage on the device. To remove the token, pass an empty string. If an optional callback parameter was passed, the callback function will be called and the first argument will be a boolean indicating whether the token was updated.
openBiometricSettings	Bot API 7.2+ A method that opens the biometric access settings for bots. Useful when you need to request biometrics access to users who haven't granted it yet. Note that this method can be called only in response to user interaction with the Mini App interface (e.g. a click inside the Mini App or on the main button)
onBiometricManagerUpdated	Bot API 7.2+ A method that sets the biometricManagerUpdated event handler.
onBiometricAuthRequested	Bot API 7.2+ A method that sets the biometricAuthRequested event handler.
onBiometricTokenUpdated	Bot API 7.2+ A method that sets the biometricTokenUpdated event handler.

useWebAppClipboard

// Hover to inspect type
import { useWebAppClipboard } from 'vue-tg'

Name	Type
onClipboardTextReceived	Bot API 6.4+ A method that sets the clipboardTextReceived event handler.
readTextFromClipboard	Bot API 6.4+ A method that requests text from the clipboard. The Mini App will receive the event clipboardTextReceived. If an optional callback parameter was passed, the callback function will be called and the text from the clipboard will be passed as the first argument. Note: this method can be called only for Mini Apps launched from the attachment menu and only in response to a user interaction with the Mini App interface (e.g. a click inside the Mini App or on the main button).

useWebAppClosingConfirmation

// Hover to inspect type
import { useWebAppClosingConfirmation } from 'vue-tg'

Name	Type
isClosingConfirmationEnabled	True, if the confirmation dialog is enabled while the user is trying to close the Mini App. False, if the confirmation dialog is disabled. ⚡️ reactive
enableClosingConfirmation	Bot API 6.2+ A method that enables a confirmation dialog while the user is trying to close the Mini App.
disableClosingConfirmation	Bot API 6.2+ A method that disables the confirmation dialog while the user is trying to close the Mini App.

useWebAppCloudStorage

// Hover to inspect type
import { useWebAppCloudStorage } from 'vue-tg'

Name	Type
setStorageItem	Bot API 6.9+ A method that stores a value in the cloud storage using the specified key. The key should contain 1-128 characters, only A-Z, a-z, 0-9, _ and - are allowed. The value should contain 0-4096 characters. You can store up to 1024 keys in the cloud storage. If an optional callback parameter was passed, the callback function will be called. In case of an error, the first argument will contain the error. In case of success, the first argument will be null and the second argument will be a boolean indicating whether the value was stored.
getStorageItem	Bot API 6.9+ A method that receives a value from the cloud storage using the specified key. The key should contain 1-128 characters, only A-Z, a-z, 0-9, _ and - are allowed. In case of an error, the callback function will be called and the first argument will contain the error. In case of success, the first argument will be null and the value will be passed as the second argument.
getStorageItems	Bot API 6.9+ A method that receives values from the cloud storage using the specified keys. The keys should contain 1-128 characters, only A-Z, a-z, 0-9, _ and - are allowed. In case of an error, the callback function will be called and the first argument will contain the error. In case of success, the first argument will be null and the values will be passed as the second argument.
removeStorageItem	Bot API 6.9+ A method that removes a value from the cloud storage using the specified key. The key should contain 1-128 characters, only A-Z, a-z, 0-9, _ and - are allowed. If an optional callback parameter was passed, the callback function will be called. In case of an error, the first argument will contain the error. In case of success, the first argument will be null and the second argument will be a boolean indicating whether the value was removed.
removeStorageItems	Bot API 6.9+ A method that removes values from the cloud storage using the specified keys. The keys should contain 1-128 characters, only A-Z, a-z, 0-9, _ and - are allowed. If an optional callback parameter was passed, the callback function will be called. In case of an error, the first argument will contain the error. In case of success, the first argument will be null and the second argument will be a boolean indicating whether the values were removed.
getStorageKeys	Bot API 6.9+ A method that receives the list of all keys stored in the cloud storage. In case of an error, the callback function will be called and the first argument will contain the error. In case of success, the first argument will be null and the list of keys will be passed as the second argument.

useWebAppHapticFeedback

// Hover to inspect type
import { useWebAppHapticFeedback } from 'vue-tg'

Name	Type
impactOccurred	Bot API 6.1+ A method tells that an impact occurred. The Telegram app may play the appropriate haptics based on style value passed. Style can be one of these values: - light, indicates a collision between small or lightweight UI objects, - medium, indicates a collision between medium-sized or medium-weight UI objects, - heavy, indicates a collision between large or heavyweight UI objects, - rigid, indicates a collision between hard or inflexible UI objects, - soft, indicates a collision between soft or flexible UI objects.
notificationOccurred	Bot API 6.1+ A method tells that a task or action has succeeded, failed, or produced a warning. The Telegram app may play the appropriate haptics based on type value passed. Type can be one of these values: - error, indicates that a task or action has failed, - success, indicates that a task or action has completed successfully, - warning, indicates that a task or action produced a warning.
selectionChanged	Bot API 6.1+ A method tells that the user has changed a selection. The Telegram app may play the appropriate haptics. Do not use this feedback when the user makes or confirms a selection; use it only when the selection changes.

useWebAppMainButton

// Hover to inspect type
import { useWebAppMainButton } from 'vue-tg'

Name	Type
mainButtonText	Current button text. Set to Continue for the main button and Cancel for the secondary button by default. ⚡️ reactive
mainButtonColor	Current button color. Set to themeParams.button_color for the main button and themeParams.bottom_bar_bg_color for the secondary button by default. ⚡️ reactive
mainButtonTextColor	Current button text color. Set to themeParams.button_text_color for the main button and themeParams.button_color for the secondary button by default. ⚡️ reactive
isMainButtonVisible	Shows whether the button is visible. Set to false by default. ⚡️ reactive
isMainButtonActive	Shows whether the button is active. Set to true by default. ⚡️ reactive
isMainButtonProgressVisible	Readonly. Shows whether the button is displaying a loading indicator. ⚡️ reactive
setMainButtonText	A method to set the button text.
onMainButtonClicked	A method that sets the mainButtonClicked event handler.
showMainButton	A method to make the button visible. Note that opening the Mini App from the attachment menu hides the main button until the user interacts with the Mini App interface.
hideMainButton	A method to hide the button.
enableMainButton	A method to enable the button.
disableMainButton	A method to disable the button.
showMainButtonProgress	A method to show a loading indicator on the button. It is recommended to display loading progress if the action tied to the button may take a long time. By default, the button is disabled while the action is in progress. If the parameter leaveActive=true is passed, the button remains enabled.
hideMainButtonProgress	A method to hide the loading indicator.
setMainButtonParams	A method to set the button parameters. The params parameter is an object containing one or several fields that need to be changed: text - button text; color - button color; text_color - button text color; has_shine_effect - Bot API 7.10+ enable shine effect; position - position of the secondary button; is_active - enable the button; is_visible - show the button.

useWebAppNavigation

// Hover to inspect type
import { useWebAppNavigation } from 'vue-tg'

Name	Type
onInvoiceClosed	Bot API 6.1+ A method that sets the invoiceClosed event handler.
openInvoice	Bot API 6.1+ A method that opens an invoice using the link url. The Mini App will receive the event invoiceClosed when the invoice is closed. If an optional callback parameter was passed, the callback function will be called and the invoice status will be passed as the first argument.
openLink	A method that opens a link in an external browser. The Mini App will not be closed. Bot API 6.4+ If the optional options parameter is passed with the field try_instant_view=true, the link will be opened in Instant View mode if possible. Note that this method can be called only in response to user interaction with the Mini App interface (e.g. a click inside the Mini App or on the main button)
openTelegramLink	A method that opens a telegram link inside the Telegram app. The Mini App will not be closed after this method is called. Up to Bot API 7.0 The Mini App will be closed after this method is called.
switchInlineQuery	Bot API 6.7+ A method that inserts the bot's username and the specified inline query in the current chat's input field. Query may be empty, in which case only the bot's username will be inserted. If an optional choose_chat_types parameter was passed, the client prompts the user to choose a specific chat, then opens that chat and inserts the bot's username and the specified inline query in the input field. You can specify which types of chats the user will be able to choose from. It can be one or more of the following types: users, bots, groups, channels.

useWebAppPopup

// Hover to inspect type
import { useWebAppPopup } from 'vue-tg'

Name	Type
onPopupClosed	Bot API 6.2+ A method that sets the popupClosed event handler.
showAlert	Bot API 6.2+ A method that shows message in a simple alert with a 'Close' button. If an optional callback parameter was passed, the callback function will be called when the popup is closed.
showConfirm	Bot API 6.2+ A method that shows message in a simple confirmation window with 'OK' and 'Cancel' buttons. If an optional callback parameter was passed, the callback function will be called when the popup is closed and the first argument will be a boolean indicating whether the user pressed the 'OK' button.
showPopup	Bot API 6.2+ A method that shows a native popup described by the params argument of the type PopupParams. The Mini App will receive the event popupClosed when the popup is closed. If an optional callback parameter was passed, the callback function will be called and the field id of the pressed button will be passed as the first argument.

useWebAppQrScanner

// Hover to inspect type
import { useWebAppQrScanner } from 'vue-tg'

Name	Type
showScanQrPopup	Bot API 6.4+ A method that shows a native popup for scanning a QR code described by the params argument of the type ScanQrPopupParams. The Mini App will receive the event qrTextReceived every time the scanner catches a code with text data. If an optional callback parameter was passed, the callback function will be called and the text from the QR code will be passed as the first argument. Returning true inside this callback function causes the popup to be closed. Starting from Bot API 7.7, the Mini App will receive the scanQrPopupClosed event if the user closes the native popup for scanning a QR code.
closeScanQrPopup	Bot API 6.4+ A method that closes the native popup for scanning a QR code opened with the showScanQrPopup method. Run it if you received valid data in the event qrTextReceived.
onQrTextReceived	Bot API 6.4+ A method that sets the qrTextReceived event handler.
onScanQrPopupClosed	Bot API 7.7+ A method that sets the scanQrPopupClosed event handler.

useWebAppRequests

// Hover to inspect type
import { useWebAppRequests } from 'vue-tg'

Name	Type
onContactRequested	Bot API 6.9+ A method that sets the contactRequested event handler.
onWriteAccessRequested	Bot API 6.9+ A method that sets the writeAccessRequested event handler.
requestContact	Bot API 6.9+ A method that shows a native popup prompting the user for their phone number. If an optional callback parameter was passed, the callback function will be called when the popup is closed and the first argument will be a boolean indicating whether the user shared its phone number.
requestWriteAccess	Bot API 6.9+ A method that shows a native popup requesting permission for the bot to send messages to the user. If an optional callback parameter was passed, the callback function will be called when the popup is closed and the first argument will be a boolean indicating whether the user granted this access.

useWebAppSettingsButton

// Hover to inspect type
import { useWebAppSettingsButton } from 'vue-tg'

Name	Type
isSettingsButtonVisible	Shows whether the context menu item is visible. Set to false by default. ⚡️ reactive
onSettingsButtonClicked	Bot API 6.1+ A method that sets the settingsButtonClicked event handler.
showSettingsButton	Bot API 7.0+ A method to make the Settings item in the context menu visible.
hideSettingsButton	Bot API 7.0+ A method to hide the Settings item in the context menu.

useWebAppShare

// Hover to inspect type
import { useWebAppShare } from 'vue-tg'

Name	Type
shareToStory	Bot API 7.8+ A method that opens the native story editor with the media specified in the media_url parameter as an HTTPS URL. An optional params argument of the type StoryShareParams describes additional sharing settings.

useWebAppTheme

// Hover to inspect type
import { useWebAppTheme } from 'vue-tg'

Name	Type
colorScheme	The color scheme currently used in the Telegram app. Either “light” or “dark”. Also available as the CSS variable var(--tg-color-scheme). ⚡️ readonly reactive
themeParams	An object containing the current theme settings used in the Telegram app. ⚡️ readonly reactive
headerColor	Current header color in the #RRGGBB format. ⚡️ reactive
backgroundColor	Current background color in the #RRGGBB format. ⚡️ reactive
setHeaderColor	Bot API 6.1+ A method that sets the app header color in the #RRGGBB format. You can also use keywords bg_color and secondary_bg_color. Up to Bot API 6.9 You can only pass Telegram.WebApp.themeParams.bg_color or Telegram.WebApp.themeParams.secondary_bg_color as a color or bg_color, secondary_bg_color keywords.
setBackgroundColor	Bot API 6.1+ A method that sets the app background color in the #RRGGBB format. You can also use keywords bg_color and secondary_bg_color.
onThemeChanged	A method that sets the themeParams event handler.

useWebAppViewport

// Hover to inspect type
import { useWebAppViewport } from 'vue-tg'

Name	Type
isExpanded	True, if the Mini App is expanded to the maximum available height. False, if the Mini App occupies part of the screen and can be expanded to the full height using the expand() method. ⚡️ readonly reactive
viewportHeight	The current height of the visible area of the Mini App. Also available in CSS as the variable var(--tg-viewport-height). The application can display just the top part of the Mini App, with its lower part remaining outside the screen area. From this position, the user can “pull” the Mini App to its maximum height, while the bot can do the same by calling the expand() method. As the position of the Mini App changes, the current height value of the visible area will be updated in real time. Please note that the refresh rate of this value is not sufficient to smoothly follow the lower border of the window. It should not be used to pin interface elements to the bottom of the visible area. It's more appropriate to use the value of the viewportStableHeight field for this purpose. ⚡️ readonly reactive
viewportStableHeight	The height of the visible area of the Mini App in its last stable state. Also available in CSS as a variable var(--tg-viewport-stable-height). The application can display just the top part of the Mini App, with its lower part remaining outside the screen area. From this position, the user can “pull” the Mini App to its maximum height, while the bot can do the same by calling the expand() method. Unlike the value of viewportHeight, the value of viewportStableHeight does not change as the position of the Mini App changes with user gestures or during animations. The value of viewportStableHeight will be updated after all gestures and animations are completed and the Mini App reaches its final size. Note the event viewportChanged with the passed parameter isStateStable=true, which will allow you to track when the stable state of the height of the visible area changes. ⚡️ readonly reactive
isVerticalSwipesEnabled	True, if vertical swipes to close or minimize the Mini App are enabled. False, if vertical swipes to close or minimize the Mini App are disabled. In any case, the user will still be able to minimize and close the Mini App by swiping the Mini App's header. ⚡️ reactive
expand	A method that expands the Mini App to the maximum available height. To find out if the Mini App is expanded to the maximum height, refer to the value of the Telegram.WebApp.isExpanded parameter
enableVerticalSwipes	Bot API 7.7+ A method that enables vertical swipes to close or minimize the Mini App. For user convenience, it is recommended to always enable swipes unless they conflict with the Mini App's own gestures.
disableVerticalSwipes	Bot API 7.7+ A method that disables vertical swipes to close or minimize the Mini App. This method is useful if your Mini App uses swipe gestures that may conflict with the gestures for minimizing and closing the app.
onViewportChanged	A method that sets the viewportChanged event handler.