Node telegram keyboard wrapper

This library aims to provide a set of classes to improve the creation of keyboards and setup for force-reply in Telegram bots.

Built upon yagop's node-telegram-bot-api, it can work with any Node.js Bot Api wrapper, as it exports Telegram Bot APIs-compliant JSON structures.

⚠ v3.0.0 of this library is a major rewrite that is not retro-compatible. It doesn't export anymore an object with reply_markup. From now on, it will export just the content for reply_markup, which will vary from keyboard to keyboard. ⚠

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Architecture

The philosophy behind this library, since v3, is to make it easier, through a series of state-less classes, to create the JSON structures to represent Rows, Buttons and the whole keyboards.

To achieve this, both ReplyKeyboard and InlineKeyboard classes and Row class extend the native Array interface.

Therefore you can do every operation you want just like you were acting on Arrays.

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Looking for previous version?

I hope you don't, but if you really need it, here it is.

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Install

$ npm install --save node-telegram-keyboard-wrapper

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Example

In examples folder, an example bot is available. It requires a bot token to be passed as argument.

$ npm run example -- 123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11

Then just type /replyKeyboard (and answer or click to hide), /inlineKeyboard (and click to trigger) or /forceReply in your Telegram client to see the wrapper in action.

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API Reference

• ForceReply
  • static .getMarkup
• Row
  • .clone
• InlineKeyboard
  • .getMarkup
  • .clone
• InlineKeyboardButton
  • .clone
• ReplyKeyboard
  • .getMarkup
  • .remove
  • .clone
• KeyboardButton
  • .clone

ForceReply

static .getMarkup

ForceReply.getMarkup(selective: boolean = false): Object;

ForceReply.getMarkup();
ForceReply.getMarkup(true);

Use this method to export the structure to be sent to reply_markup.

Arguments:

Argument	Type	Required	Default Value
selective	boolean	false	false

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Row (extends Array.prototype)

new Row<R extends InlineKeyboardButton | KeyboardButton>(...values: R[]): Row;

Use this class to define a row to which buttons can be appended to.

Push this class into an InlineKeyboard or a ReplyKeyboard to let them create the structure.

This class extends native arrays and, therefore, allows every operation you can perform on Arrays to be performed on this.

Arguments:

Inherited from Array's constructor.

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.clone

Row.prototype.clone(): Row<R>;

const row = new Row<KeyboardButton>();
const clone = row.clone();

row !== clone; // true;

Creates a copy of the row and clones all its children / buttons.

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InlineKeyboard (extends Array.prototype)

new InlineKeyboard(...values: Row<InlineKeyboardButton>[]): InlineKeyboard;

Use this class to create a container for InlineKeyboards.

This class extends the native Array interface, therefore every operation you can perform on Arrays is allowed to be performed on this.

Arguments:

Inherited from Array's constructor.

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.getMarkup

InlineKeyboard.prototype.getMarkup(): Object;

const keyboard = new InlineKeyboard();
keyboard.getMarkup();

Use this method to export the structure to be sent to reply_markup.

Throws if no rows got pushed in the object.

Arguments:

none.

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.clone

InlineKeyboard.prototype.clone(): InlineKeyboard;

const keyboard = new InlineKeyboard();
const clone = row.clone();

keyboard !== clone; // true;

Creates a copy of the keyboard, a copy of all of its row and a clone of all of their children / buttons.

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InlineKeyboardButton

new InlineKeyboardButton<S extends string>(text: string, exclusiveKey: S, exclusiveValue: T[S]): InlineKeyboardButton;

Use this method to create a button to be pushed in a Row. As per the Telegram Bot API Documentation, each InlineKeyboardButton must have only one of the optional properties.

Arguments:

Argument	Type	Required	Default Value	Description
text	string	true	-	The visual string to be shown on the button.
exclusiveKey	S extends string	true	-	The required key for this button.
exclusiveValue	T[S]	true	-	the value for exclusiveKey (it differs from key to key).

For the valid values of exclusiveKey and exclusiveValue refer to InlineKeyboardButton;

Example:

const row = new Row<InlineKeyboardButton>();

row.push(
	new InlineKeyboardButton("My text", "url", "https://localhost:8080/"),
	new InlineKeyboardButton(
		"My text 2",
		"callback_data",
		"any data between 1 and 64 bytes"
	)
);

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.clone

InlineKeyboardButton.prototype.clone(): InlineKeyboardButton;

const button = new InlineKeyboardButton();
const clone = button.clone();

button !== clone; // true;

Creates a copy of the button and objects inside it.

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ReplyKeyboard (extends Array.prototype)

new ReplyKeyboard(...values: Row<KeyboardButton>[]): ReplyKeyboard;

Use this class to create a new keyboard that is going to show up under the text area in your Telegram client.

This class extends the native Array interface, therefore every operation you can perform on Arrays is allowed to be performed on this.

Arguments:

Inherited from Array's constructor.

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.getMarkup

ReplyKeyboard.prototype.getMarkup(): Object;

const keyboard = new ReplyKeyboard();
keyboard.getMarkup();

Use this method to export the structure to be sent to reply_markup for opening the keyboard.

Throws if no rows got pushed in the object.

Arguments:

Argument	Type	Required	Default Value
options	Object	false	{}
options.resize_keyboard	boolean	false	undefined
options.one_time_keyboard	boolean	false	undefined
options.selective	boolean	false	undefined

This list might get outdated. The arguments are used as they are passed. Refer to ReplyKeyboardMarkup for the complete list, eventually.

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.remove

ReplyKeyboard.prototype.remove(): Object;

const keyboard = new ReplyKeyboard();
keyboard.remove();

Use this method to export the structure to be sent to reply_markup for closing definitely the keyboard.

Arguments:

Argument	Type	Required	Default Value
selective	boolean	false	false

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.clone

ReplyKeyboard.prototype.clone(): ReplyKeyboard;

const keyboard = new ReplyKeyboard();
const clone = keyboard.clone();

keyboard !== clone; // true;

Creates a copy of the keyboard, a copy of all of its row and a clone of all of their children / buttons.

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KeyboardButton

new KeyboardButton<S extends string>(text: string, options: Options): KeyboardButton;

Use this method to create a button to be pushed in a Row.

Arguments:

Argument	Type	Required	Default Value	Description
text	string	true	-	The visual string to be shown on the button.
options	Object	false	{}	The options for this button.
options.request_contact	boolean	false	undefined	-
options.request_location	boolean	false	undefined	-
options.request_poll	Object	false	undefined	-
options.request_poll.type	"quiz" | "regular"	true	undefined	-

Example:

const row = new Row<KeyboardButton>();

row.push(
	new KeyboardButton("My text 1", {
		request_location: true,
		request_contact: false,
	})
);

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.clone

InlineKeyboardButton.prototype.clone(): InlineKeyboardButton;

const button = new InlineKeyboardButton();
const clone = button.clone();

button !== clone; // true;

Creates a copy of the button and objects inside it.

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Testing

Tests are build upon Jasmine Unit suite. Run these commands to test changes after have cloned the repository:

$ npm install

$ npm run build # to build from Typescript
$ npm run build:spec # to build tests
$ npm test # to both build tests and run them

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Any contribution, is welcome. Made with ❤️ in Italy.