docs: improve process event headers

doc/api/net.md

@@ -388,7 +388,7 @@ added: v0.3.4
 Creates a new socket object.
 
 * `options` {Object} Available options are:
-  * `fd`: {number} If specified, wrap around an existing socket with
+  * `fd` {number} If specified, wrap around an existing socket with
     the given file descriptor, otherwise a new socket will be created.
   * `allowHalfOpen` {boolean} Indicates whether half-opened TCP connections
     are allowed. See [`net.createServer()`][] and the [`'end'`][] event

doc/api/process.md

@@ -45,6 +45,8 @@ the IPC channel is closed.
 added: v0.1.7
 -->
 
+* `code` {integer}
+
 The `'exit'` event is emitted when the Node.js process is about to exit as a
 result of either:
 
@@ -56,7 +58,7 @@ all `'exit'` listeners have finished running the Node.js process will terminate.
 
 The listener callback function is invoked with the exit code specified either
 by the [`process.exitCode`][] property, or the `exitCode` argument passed to the
-[`process.exit()`] method, as the only argument.
+[`process.exit()`] method.
 
 ```js
 process.on('exit', (code) => {
@@ -82,16 +84,15 @@ process.on('exit', (code) => {
 added: v0.5.10
 -->
 
+* `message` {Object} a parsed JSON object or primitive value.
+* `sendHandle` {net.Server|net.Socket} a [`net.Server`][] or [`net.Socket`][]
+  object, or undefined.
+
 If the Node.js process is spawned with an IPC channel (see the [Child Process][]
 and [Cluster][] documentation), the `'message'` event is emitted whenever a
 message sent by a parent process using [`childprocess.send()`][] is received by
 the child process.
 
-The listener callback is invoked with the following arguments:
-* `message` {Object} a parsed JSON object or primitive value.
-* `sendHandle` {net.Server|net.Socket} a [`net.Server`][] or [`net.Socket`][]
-  object, or undefined.
-
 The message goes through serialization and parsing. The resulting message might
 not be the same as what is originally sent.
 
@@ -100,13 +101,12 @@ not be the same as what is originally sent.
 added: v1.4.1
 -->
 
+* `promise` {Promise} The late handled promise.
+
 The `'rejectionHandled'` event is emitted whenever a `Promise` has been rejected
 and an error handler was attached to it (using [`promise.catch()`][], for
 example) later than one turn of the Node.js event loop.
 
-The listener callback is invoked with a reference to the rejected `Promise` as
-the only argument.
-
 The `Promise` object would have previously been emitted in an
 `'unhandledRejection'` event, but during the course of processing gained a
 rejection handler.
@@ -129,11 +129,11 @@ when the list of unhandled rejections shrinks.
 
 ```js
 const unhandledRejections = new Map();
-process.on('unhandledRejection', (reason, p) => {
-  unhandledRejections.set(p, reason);
+process.on('unhandledRejection', (reason, promise) => {
+  unhandledRejections.set(promise, reason);
 });
-process.on('rejectionHandled', (p) => {
-  unhandledRejections.delete(p);
+process.on('rejectionHandled', (promise) => {
+  unhandledRejections.delete(promise);
 });
 ```
 
@@ -261,6 +261,12 @@ being emitted. Alternatively, the [`'rejectionHandled'`][] event may be used.
 added: v6.0.0
 -->
 
+* `warning` {Error} Key properties of the warning are:
+  * `name` {string} The name of the warning. **Default:** `'Warning'`.
+  * `message` {string} A system-provided description of the warning.
+  * `stack` {string} A stack trace to the location in the code where the warning
+    was issued.
+
 The `'warning'` event is emitted whenever Node.js emits a process warning.
 
 A process warning is similar to an error in that it describes exceptional
@@ -269,14 +275,6 @@ are not part of the normal Node.js and JavaScript error handling flow.
 Node.js can emit warnings whenever it detects bad coding practices that could
 lead to sub-optimal application performance, bugs, or security vulnerabilities.
 
-The listener function is called with a single `warning` argument whose value is
-an `Error` object. There are three key properties that describe the warning:
-
-* `name` {string} The name of the warning (currently `'Warning'` by default).
-* `message` {string} A system-provided description of the warning.
-* `stack` {string} A stack trace to the location in the code where the warning
-  was issued.
-
 ```js
 process.on('warning', (warning) => {
   console.warn(warning.name);    // Print the warning name