doc: add extends for derived classes

doc/api/child_process.md

@@ -894,8 +894,9 @@ arbitrary command execution.**
 added: v2.2.0
 -->
 
-Instances of the `ChildProcess` class are [`EventEmitters`][`EventEmitter`] that
-represent spawned child processes.
+* Extends: {EventEmitter}
+
+Instances of the `ChildProcess` represent spawned child processes.
 
 Instances of `ChildProcess` are not intended to be created directly. Rather,
 use the [`child_process.spawn()`][], [`child_process.exec()`][],

doc/api/cluster.md

@@ -116,6 +116,8 @@ also be used for other use cases requiring worker processes.
 added: v0.7.0
 -->
 
+* Extends: {EventEmitter}
+
 A `Worker` object contains all public information and method about a worker.
 In the master it can be obtained using `cluster.workers`. In a worker
 it can be obtained using `cluster.worker`.

doc/api/dgram.md

@@ -35,8 +35,9 @@ server.bind(41234);
 added: v0.1.99
 -->
 
-The `dgram.Socket` object is an [`EventEmitter`][] that encapsulates the
-datagram functionality.
+* Extends: {EventEmitter}
+
+Encapsulates the datagram functionality.
 
 New instances of `dgram.Socket` are created using [`dgram.createSocket()`][].
 The `new` keyword is not to be used to create `dgram.Socket` instances.
@@ -719,7 +720,6 @@ and `udp6` sockets). The bound address and port can be retrieved using
 [`Error`]: errors.html#errors_class_error
 [`ERR_SOCKET_DGRAM_IS_CONNECTED`]: errors.html#errors_err_socket_dgram_is_connected
 [`ERR_SOCKET_DGRAM_NOT_CONNECTED`]: errors.html#errors_err_socket_dgram_not_connected
-[`EventEmitter`]: events.html
 [`System Error`]: errors.html#errors_class_systemerror
 [`close()`]: #dgram_socket_close_callback
 [`cluster`]: cluster.html

doc/api/domain.md

@@ -273,11 +273,12 @@ serverDomain.run(() => {
 
 ## Class: Domain
 
+* Extends: {EventEmitter}
+
 The `Domain` class encapsulates the functionality of routing errors and
 uncaught exceptions to the active `Domain` object.
 
-`Domain` is a child class of [`EventEmitter`][]. To handle the errors that it
-catches, listen to its `'error'` event.
+To handle the errors that it catches, listen to its `'error'` event.
 
 ### domain.members
 
@@ -475,7 +476,6 @@ Promises. In other words, no `'error'` event will be emitted for unhandled
 `Promise` rejections.
 
 [`Error`]: errors.html#errors_class_error
-[`EventEmitter`]: events.html#events_class_eventemitter
 [`domain.add(emitter)`]: #domain_domain_add_emitter
 [`domain.bind(callback)`]: #domain_domain_bind_callback
 [`domain.exit()`]: #domain_domain_exit

doc/api/inspector.md

@@ -64,6 +64,8 @@ An exception will be thrown if there is no active inspector.
 
 ## Class: inspector.Session
 
+* Extends: {EventEmitter}
+
 The `inspector.Session` is used for dispatching messages to the V8 inspector
 back-end and receiving message responses and notifications.
 
@@ -76,8 +78,6 @@ Create a new instance of the `inspector.Session` class. The inspector session
 needs to be connected through [`session.connect()`][] before the messages
 can be dispatched to the inspector backend.
 
-`inspector.Session` is an [`EventEmitter`][] with the following events:
-
 ### Event: 'inspectorNotification'
 <!-- YAML
 added: v8.0.0
@@ -217,7 +217,6 @@ session.post('HeapProfiler.takeHeapSnapshot', null, (err, r) => {
 ```
 
 [`'Debugger.paused'`]: https://chromedevtools.github.io/devtools-protocol/v8/Debugger#event-paused
-[`EventEmitter`]: events.html#events_class_eventemitter
 [`session.connect()`]: #inspector_session_connect
 [CPU Profiler]: https://chromedevtools.github.io/devtools-protocol/v8/Profiler
 [Chrome DevTools Protocol Viewer]: https://chromedevtools.github.io/devtools-protocol/v8/

doc/api/net.md

@@ -60,6 +60,8 @@ net.createServer().listen(
 added: v0.1.90
 -->
 
+* Extends: {EventEmitter}
+
 This class is used to create a TCP or [IPC][] server.
 
 ### new net.Server([options][, connectionListener])
@@ -384,10 +386,11 @@ active server in the event system. If the server is already `unref`ed calling
 added: v0.3.4
 -->
 
+* Extends: {stream.Duplex}
+
 This class is an abstraction of a TCP socket or a streaming [IPC][] endpoint
-(uses named pipes on Windows, and Unix domain sockets otherwise). A
-`net.Socket` is also a [duplex stream][], so it can be both readable and
-writable, and it is also an [`EventEmitter`][].
+(uses named pipes on Windows, and Unix domain sockets otherwise). It is also
+an [`EventEmitter`][].
 
 A `net.Socket` can be created by the user and used directly to interact with
 a server. For example, it is returned by [`net.createConnection()`][],
@@ -1234,7 +1237,6 @@ Returns `true` if input is a version 6 IP address, otherwise returns `false`.
 [IPC]: #net_ipc_support
 [Identifying paths for IPC connections]: #net_identifying_paths_for_ipc_connections
 [Readable Stream]: stream.html#stream_class_stream_readable
-[duplex stream]: stream.html#stream_class_stream_duplex
 [half-closed]: https://tools.ietf.org/html/rfc1122
 [stream_writable_write]: stream.html#stream_writable_write_chunk_encoding_callback
 [unspecified IPv4 address]: https://en.wikipedia.org/wiki/0.0.0.0

doc/api/readline.md

@@ -38,6 +38,8 @@ received on the `input` stream.
 added: v0.1.104
 -->
 
+* Extends: {EventEmitter}
+
 Instances of the `readline.Interface` class are constructed using the
 `readline.createInterface()` method. Every instance is associated with a
 single `input` [Readable][] stream and a single `output` [Writable][] stream.

doc/api/repl.md

@@ -333,7 +333,8 @@ function myWriter(output) {
 added: v0.1.91
 -->
 
-The `repl.REPLServer` class inherits from the [`readline.Interface`][] class.
+* Extends: {readline.Interface}
+
 Instances of `repl.REPLServer` are created using the `repl.start()` method and
 *should not* be created directly using the JavaScript `new` keyword.
 
@@ -696,7 +697,6 @@ For an example of running a REPL instance over [curl(1)][], see:
 [`domain`]: domain.html
 [`process.setUncaughtExceptionCaptureCallback()`]: process.html#process_process_setuncaughtexceptioncapturecallback_fn
 [`readline.InterfaceCompleter`]: readline.html#readline_use_of_the_completer_function
-[`readline.Interface`]: readline.html#readline_class_interface
 [`repl.ReplServer`]: #repl_class_replserver
 [`util.inspect()`]: util.html#util_util_inspect_object_options
 [curl(1)]: https://curl.haxx.se/docs/manpage.html

doc/api/tty.md

@@ -35,10 +35,11 @@ classes.
 added: v0.5.8
 -->
 
-The `tty.ReadStream` class is a subclass of [`net.Socket`][] that represents the
-readable side of a TTY. In normal circumstances [`process.stdin`][] will be the
-only `tty.ReadStream` instance in a Node.js process and there should be no
-reason to create additional instances.
+* Extends: {net.Socket}
+
+Represents the readable side of a TTY. In normal circumstances
+[`process.stdin`][] will be the only `tty.ReadStream` instance in a Node.js
+process and there should be no reason to create additional instances.
 
 ### readStream.isRaw
 <!-- YAML
@@ -78,10 +79,12 @@ terminal is disabled, including echoing input characters.
 added: v0.5.8
 -->
 
-The `tty.WriteStream` class is a subclass of [`net.Socket`][] that represents
-the writable side of a TTY. In normal circumstances, [`process.stdout`][] and
-[`process.stderr`][] will be the only `tty.WriteStream` instances created for a
-Node.js process and there should be no reason to create additional instances.
+* Extends: {net.Socket}
+
+Represents the writable side of a TTY. In normal circumstances,
+[`process.stdout`][] and [`process.stderr`][] will be the only
+`tty.WriteStream` instances created for a Node.js process and there
+should be no reason to create additional instances.
 
 ### Event: 'resize'
 <!-- YAML
@@ -284,7 +287,6 @@ The `tty.isatty()` method returns `true` if the given `fd` is associated with
 a TTY and `false` if it is not, including whenever `fd` is not a non-negative
 integer.
 
-[`net.Socket`]: net.html#net_class_net_socket
 [`process.stderr`]: process.html#process_process_stderr
 [`process.stdin`]: process.html#process_process_stdin
 [`process.stdout`]: process.html#process_process_stdout