[SDK-3857] Add typings for the tree-shakable version of the library

.eslintrc.js

@@ -44,7 +44,7 @@ module.exports = {
       },
     },
     {
-      files: 'ably.d.ts',
+      files: ['ably.d.ts', 'modules.d.ts'],
       extends: [
         'plugin:jsdoc/recommended',
       ],

.github/workflows/check.yml

@@ -21,5 +21,5 @@ jobs:
       - run: npm ci
       - run: npm run lint
       - run: npm run format:check
-      - run: npx tsc --noEmit ably.d.ts build/ably-webworker.min.d.ts
+      - run: npx tsc --noEmit ably.d.ts modules.d.ts build/ably-webworker.min.d.ts
       - run: npm audit --production

ably.d.ts

@@ -1700,32 +1700,7 @@
   /**
    * A client that offers a simple stateless API to interact directly with Ably's REST API.
    */
-  class Rest {
-    /**
-     * Construct a client object using an Ably {@link Types.ClientOptions} object.
-     *
-     * @param options - A {@link Types.ClientOptions} object to configure the client connection to Ably.
-     */
-    constructor(options: Types.ClientOptions);
-    /**
-     * Constructs a client object using an Ably API key or token string.
-     *
-     * @param keyOrToken - The Ably API key or token string used to validate the client.
-     */
-    constructor(keyOrToken: string);
-    /**
-     * The cryptographic functions available in the library.
-     */
-    static Crypto: Types.Crypto;
-    /**
-     * Static utilities related to messages.
-     */
-    static Message: Types.MessageStatic;
-    /**
-     * Static utilities related to presence messages.
-     */
-    static PresenceMessage: Types.PresenceMessageStatic;
-
+  abstract class Rest {
     /**
      * An {@link Types.Auth} object.
      */
@@ -1799,31 +1774,7 @@
   /**
    * A client that extends the functionality of {@link Rest} and provides additional realtime-specific features.
    */
-  class Realtime {
-    /**
-     * Construct a client object using an Ably {@link Types.ClientOptions} object.
-     *
-     * @param options - A {@link Types.ClientOptions} object to configure the client connection to Ably.
-     */
-    constructor(options: Types.ClientOptions);
-    /**
-     * Constructs a client object using an Ably API key or token string.
-     *
-     * @param keyOrToken - The Ably API key or token string used to validate the client.
-     */
-    constructor(keyOrToken: string);
-    /**
-     * The cryptographic functions available in the library.
-     */
-    static Crypto: Types.Crypto;
-    /**
-     * Static utilities related to messages.
-     */
-    static Message: Types.MessageStatic;
-    /**
-     * Static utilities related to presence messages.
-     */
-    static PresenceMessage: Types.PresenceMessageStatic;
+  abstract class Realtime {
     /**
      * A client ID, used for identifying this client when publishing messages or for presence purposes. The `clientId` can be any non-empty string, except it cannot contain a `*`. This option is primarily intended to be used in situations where the library is instantiated with a key. A `clientId` may also be implicit in a token used to instantiate the library; an error will be raised if a `clientId` specified here conflicts with the `clientId` implicit in the token.
      */
@@ -2361,8 +2312,8 @@
      */
     get(name: string, channelOptions?: ChannelOptions): T;
     /**
      * @experimental This is a preview feature and may change in a future non-major release.
      * This experimental method allows you to create custom realtime data feeds by selectively subscribing
      * to receive only part of the data from the channel.
      * See the [announcement post](https://pages.ably.com/subscription-filters-preview) for more information.
      *
@@ -2387,28 +2338,6 @@
    * Contains an individual message that is sent to, or received from, Ably.
    */
   class Message {
-    /**
-     * Constructor for internal use.
-     *
-     * @internal
-     */
-    constructor();
-    /**
-     * A static factory method to create a `Message` object from a deserialized Message-like object encoded using Ably's wire protocol.
-     *
-     * @param JsonObject - A `Message`-like deserialized object.
-     * @param channelOptions - A {@link ChannelOptions} object. If you have an encrypted channel, use this to allow the library to decrypt the data.
-     * @returns A promise which will be fulfilled with a `Message` object.
-     */
-    static fromEncoded: (JsonObject: any, channelOptions?: ChannelOptions) => Promise<Message>;
-    /**
-     * A static factory method to create an array of `Message` objects from an array of deserialized Message-like object encoded using Ably's wire protocol.
-     *
-     * @param JsonArray - An array of `Message`-like deserialized objects.
-     * @param channelOptions - A {@link ChannelOptions} object. If you have an encrypted channel, use this to allow the library to decrypt the data.
-     * @returns A promise which will be fulfilled with an array of {@link Message} objects.
-     */
-    static fromEncodedArray: (JsonArray: any[], channelOptions?: ChannelOptions) => Promise<Message[]>;
     /**
      * The client ID of the publisher of this message.
      */
@@ -2469,26 +2398,6 @@
    * Contains an individual presence update sent to, or received from, Ably.
    */
   class PresenceMessage {
-    /**
-     * Constructor for internal use.
-     *
-     * @internal
-     */
-    constructor();
-    /**
-     * Decodes and decrypts a deserialized `PresenceMessage`-like object using the cipher in {@link ChannelOptions}. Any residual transforms that cannot be decoded or decrypted will be in the `encoding` property. Intended for users receiving messages from a source other than a REST or Realtime channel (for example a queue) to avoid having to parse the encoding string.
-     *
-     * @param JsonObject - The deserialized `PresenceMessage`-like object to decode and decrypt.
-     * @param channelOptions - A {@link ChannelOptions} object containing the cipher.
-     */
-    static fromEncoded: (JsonObject: any, channelOptions?: ChannelOptions) => Promise<PresenceMessage>;
-    /**
-     * Decodes and decrypts an array of deserialized `PresenceMessage`-like object using the cipher in {@link ChannelOptions}. Any residual transforms that cannot be decoded or decrypted will be in the `encoding` property. Intended for users receiving messages from a source other than a REST or Realtime channel (for example a queue) to avoid having to parse the encoding string.
-     *
-     * @param JsonArray - An array of deserialized `PresenceMessage`-like objects to decode and decrypt.
-     * @param channelOptions - A {@link ChannelOptions} object containing the cipher.
-     */
-    static fromEncodedArray: (JsonArray: any[], channelOptions?: ChannelOptions) => Promise<PresenceMessage[]>;
     /**
      * The type of {@link PresenceAction} the `PresenceMessage` is for.
      */
@@ -2891,12 +2800,62 @@
 /**
  * A client that offers a simple stateless API to interact directly with Ably's REST API.
  */
-export declare class Rest extends Types.Rest {}
+export declare class Rest extends Types.Rest {
+  /**
+   * Construct a client object using an Ably {@link Types.ClientOptions} object.
+   *
+   * @param options - A {@link Types.ClientOptions} object to configure the client connection to Ably.
+   */
+  constructor(options: Types.ClientOptions);
+  /**
+   * Constructs a client object using an Ably API key or token string.
+   *
+   * @param keyOrToken - The Ably API key or token string used to validate the client.
+   */
+  constructor(keyOrToken: string);
+  /**
+   * The cryptographic functions available in the library.
+   */
+  static Crypto: Types.Crypto;
+  /**
+   * Static utilities related to messages.
+   */
+  static Message: Types.MessageStatic;
+  /**
+   * Static utilities related to presence messages.
+   */
+  static PresenceMessage: Types.PresenceMessageStatic;
+}
 
 /**
  * A client that extends the functionality of {@link Rest} and provides additional realtime-specific features.
  */
-export declare class Realtime extends Types.Realtime {}
+export declare class Realtime extends Types.Realtime {
+  /**
+   * Construct a client object using an Ably {@link Types.ClientOptions} object.
+   *
+   * @param options - A {@link Types.ClientOptions} object to configure the client connection to Ably.
+   */
+  constructor(options: Types.ClientOptions);
+  /**
+   * Constructs a client object using an Ably API key or token string.
+   *
+   * @param keyOrToken - The Ably API key or token string used to validate the client.
+   */
+  constructor(keyOrToken: string);
+  /**
+   * The cryptographic functions available in the library.
+   */
+  static Crypto: Types.Crypto;
+  /**
+   * Static utilities related to messages.
+   */
+  static Message: Types.MessageStatic;
+  /**
+   * Static utilities related to presence messages.
+   */
+  static PresenceMessage: Types.PresenceMessageStatic;
+}
 
 /**
  * A generic Ably error object that contains an Ably-specific status code, and a generic status code. Errors returned from the Ably server are compatible with the `ErrorInfo` structure and should result in errors that inherit from `ErrorInfo`.

modules.d.ts

@@ -0,0 +1,45 @@
+import { Types } from './ably';
+
+export declare const generateRandomKey: Types.Crypto['generateRandomKey'];
+export declare const getDefaultCryptoParams: Types.Crypto['getDefaultParams'];
+export declare const decodeMessage: Types.MessageStatic['fromEncoded'];
+export declare const decodeEncryptedMessage: Types.MessageStatic['fromEncoded'];
+export declare const decodeMessages: Types.MessageStatic['fromEncodedArray'];
+export declare const decodeEncryptedMessages: Types.MessageStatic['fromEncodedArray'];
+export declare const decodePresenceMessage: Types.PresenceMessageStatic['fromEncoded'];
+export declare const decodePresenceMessages: Types.PresenceMessageStatic['fromEncodedArray'];
+export declare const constructPresenceMessage: Types.PresenceMessageStatic['fromValues'];
+
+export declare const Rest: unknown;
+export declare const Crypto: unknown;
+export declare const MsgPack: unknown;
+export declare const RealtimePresence: unknown;
+export declare const WebSocketTransport: unknown;
+export declare const XHRPolling: unknown;
+export declare const XHRStreaming: unknown;
+export declare const XHRRequest: unknown;
+export declare const FetchRequest: unknown;
+export declare const MessageInteractions: unknown;
+
+export interface ModulesMap {
+  Rest?: typeof Rest;
+  Crypto?: typeof Crypto;
+  MsgPack?: typeof MsgPack;
+  RealtimePresence?: typeof RealtimePresence;
+  WebSocketTransport?: typeof WebSocketTransport;
+  XHRPolling?: typeof XHRPolling;
+  XHRStreaming?: typeof XHRStreaming;
+  XHRRequest?: typeof XHRRequest;
+  FetchRequest?: typeof FetchRequest;
+  MessageInteractions?: typeof MessageInteractions;
+}
+
+export declare class BaseRest extends Types.Rest {
+  constructor(options: Types.ClientOptions, modules: ModulesMap);
+}
+
+export declare class BaseRealtime extends Types.Realtime {
+  constructor(options: Types.ClientOptions, modules: ModulesMap);
+}
+
+export { Types };

package.json

@@ -7,17 +7,22 @@
     "url": "https://github.com/ably/ably-js/issues",
     "email": "[email protected]"
   },
-  "main": "./build/ably-node.js",
-  "typings": "./ably.d.ts",
-  "react-native": {
-    "./build/ably-node.js": "./build/ably-reactnative.js"
-  },
-  "browser": {
-    "./build/ably-node.js": "./build/ably.js"
+  "exports": {
+    ".": {
+      "node": "./build/ably-node.js",
+      "react-native": "./build/ably-reactnative.js",
+      "default": "./build/ably.js"
+    },
+    "./modules": {
+      "types": "./modules.d.ts",
+      "default": "./build/modules/index.js"
+    }
   },
+  "typings": "./ably.d.ts",
   "files": [
     "build/**",
     "ably.d.ts",
+    "modules.d.ts",
     "resources/**",
     "src/**",
     "react/**"
@@ -123,8 +128,8 @@
     "lint": "eslint .",
     "lint:fix": "eslint --fix .",
     "prepare": "npm run build",
-    "format": "prettier --write --ignore-path .gitignore --ignore-path .prettierignore src test ably.d.ts webpack.config.js Gruntfile.js scripts/*.js docs/chrome-mv3.md",
-    "format:check": "prettier --check --ignore-path .gitignore --ignore-path .prettierignore src test ably.d.ts webpack.config.js Gruntfile.js scripts/*.js",
+    "format": "prettier --write --ignore-path .gitignore --ignore-path .prettierignore src test ably.d.ts modules.d.ts webpack.config.js Gruntfile.js scripts/*.js docs/chrome-mv3.md",
+    "format:check": "prettier --check --ignore-path .gitignore --ignore-path .prettierignore src test ably.d.ts modules.d.ts webpack.config.js Gruntfile.js scripts/*.js",
     "sourcemap": "source-map-explorer build/ably.min.js",
     "sourcemap:noencryption": "source-map-explorer build/ably.noencryption.min.js",
     "modulereport": "node scripts/moduleReport.js",

test/package/browser/template/README.md

@@ -5,7 +5,10 @@ This directory is intended to be used for testing the following aspects of the a
 - that its exports are correctly configured and provide access to ably-js’s functionality
 - that its TypeScript typings are correctly configured and can be successfully used from a TypeScript-based app that imports the package
 
-The file `src/index.ts` imports the ably-js package and exports a function which briefly exercises its functionality.
+It contains two files, each of which import ably-js in different manners, and which export a function which briefly exercises its functionality:
+
+- `src/index-default.ts` imports the default ably-js package (`import { Realtime } from 'ably'`).
+- `src/index-modules.ts` imports the tree-shakable ably-js package (`import { BaseRealtime, WebSocketTransport, FetchRequest } from 'ably/modules'`).
 
 ## Why is `ably` not in `package.json`?
 
@@ -15,6 +18,8 @@ The `ably` dependency gets added when we run the repository’s `test:package` p
 
 This directory exposes three package scripts that are to be used for testing:
 
-- `build`: Uses esbuild to create a bundle containing `src/index.ts` and ably-js.
-- `test`: Using the bundle created by `build`, tests that the code that exercises ably-js’s functionality is working correctly in a browser.
+- `build`: Uses esbuild to create:
+  1.  a bundle containing `src/index-default.ts` and ably-js;
+  2.  a bundle containing `src/index-modules.ts` and ably-js.
+- `test`: Using the bundles created by `build`, tests that the code that exercises ably-js’s functionality is working correctly in a browser.
 - `typecheck`: Type-checks the code that imports ably-js.

test/package/browser/template/package.json

@@ -4,7 +4,7 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "build": "esbuild --bundle src/index.ts --outdir=dist",
+    "build": "esbuild --bundle src/index-default.ts --outdir=dist && esbuild --bundle src/index-modules.ts --outdir=dist",
     "typecheck": "tsc -noEmit",
     "test-support:server": "ts-node server/server.ts",
     "test": "playwright test",

test/package/browser/template/server/resources/index-default.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Ably NPM package test (default export)</title>
+  </head>
+  <body>
+    <script type="text/javascript" src="index-default.js"></script>
+    <script type="text/javascript" src="runTest.js"></script>
+  </body>
+</html>

test/package/browser/template/server/resources/index-modules.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Ably NPM package test (tree-shakable export)</title>
+  </head>
+  <body>
+    <script type="text/javascript" src="index-modules.js"></script>
+    <script type="text/javascript" src="runTest.js"></script>
+  </body>
+</html>

test/package/browser/template/server/resources/runTest.js

@@ -0,0 +1,9 @@
+(async () => {
+  try {
+    await testAblyPackage();
+    onResult(null);
+  } catch (error) {
+    console.log('Caught error', error);
+    onResult(error);
+  }
+})();

test/package/browser/template/server/server.ts

@@ -3,8 +3,11 @@ import path from 'node:path';
 
 async function startWebServer(listenPort: number) {
   const server = express();
+  server.get('/', (req, res) => res.send('OK'));
   server.use(express.static(path.join(__dirname, '/resources')));
-  server.use('/index.js', express.static(path.join(__dirname, '..', 'dist', 'index.js')));
+  for (const filename of ['index-default.js', 'index-modules.js']) {
+    server.use(`/${filename}`, express.static(path.join(__dirname, '..', 'dist', filename)));
+  }
 
   server.listen(listenPort);
 }