lib: move DEP0028 to end of life

PR-URL: #25377
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: cjihrig

Diff for: doc/api/deprecations.md

@@ -611,6 +611,9 @@ Type: End-of-Life
 ### DEP0028: util.debug()
 <!-- YAML
 changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/xxxxx
+    description: End-of-Life.
   - version:
     - v4.8.6
     - v6.12.0
@@ -621,10 +624,9 @@ changes:
     description: Runtime deprecation.
 -->
 
-Type: Runtime
+Type: End-of-Life
 
-The [`util.debug()`][] API is deprecated. Please use [`console.error()`][]
-instead.
+`util.debug()` has been removed. Please use [`console.error()`][] instead.
 
 <a id="DEP0029"></a>
 ### DEP0029: util.error()
@@ -2395,7 +2397,6 @@ Setting the TLS ServerName to an IP address is not permitted by
 [`url.parse()`]: url.html#url_url_parse_urlstring_parsequerystring_slashesdenotehost
 [`url.resolve()`]: url.html#url_url_resolve_from_to
 [`util._extend()`]: util.html#util_util_extend_target_source
-[`util.debug()`]: util.html#util_util_debug_string
 [`util.error()`]: util.html#util_util_error_strings
 [`util.getSystemErrorName()`]: util.html#util_util_getsystemerrorname_err
 [`util.inspect()`]: util.html#util_util_inspect_object_options

Diff for: doc/api/util.md

@@ -1714,18 +1714,6 @@ Node.js modules. The community found and used it anyway.
 It is deprecated and should not be used in new code. JavaScript comes with very
 similar built-in functionality through [`Object.assign()`].
 
-### util.debug(string)
-<!-- YAML
-added: v0.3.0
-deprecated: v0.11.3
--->
-
-> Stability: 0 - Deprecated: Use [`console.error()`][] instead.
-
-* `string` {string} The message to print to `stderr`
-
-Deprecated predecessor of `console.error`.
-
 ### util.error([...strings])
 <!-- YAML
 added: v0.3.0

Diff for: lib/util.js

@@ -325,11 +325,6 @@ function _extend(target, source) {
 }
 
 // Deprecated old stuff.
-
-function debug(x) {
-  process.stderr.write(`DEBUG: ${x}\n`);
-}
-
 function error(...args) {
   for (var i = 0, len = args.length; i < len; ++i) {
     process.stderr.write(`${args[i]}\n`);
@@ -429,9 +424,6 @@ module.exports = exports = {
   types,
 
   // Deprecated Old Stuff
-  debug: deprecate(debug,
-                   'util.debug is deprecated. Use console.error instead.',
-                   'DEP0028'),
   error: deprecate(error,
                    'util.error is deprecated. Use console.error instead.',
                    'DEP0029')

Diff for: test/fixtures/deprecated.js

@@ -1 +1,7 @@
-require('util').debug('This is deprecated');
+'use strict';
+const util = require('util');
+const deprecated = util.deprecate(() => {
+  console.error('This is deprecated');
+}, 'this function is deprecated');
+
+deprecated();

Diff for: test/parallel/test-util.js

@@ -145,11 +145,9 @@ assert.strictEqual(util.isFunction(), false);
 assert.strictEqual(util.isFunction('string'), false);
 
 common.expectWarning('DeprecationWarning', [
-  ['util.debug is deprecated. Use console.error instead.', 'DEP0028'],
   ['util.error is deprecated. Use console.error instead.', 'DEP0029']
 ]);
 
-util.debug('test');
 util.error('test');
 
 {

Diff for: test/sequential/test-deprecation-flags.js

@@ -44,15 +44,15 @@ execFile(node, normal, function(er, stdout, stderr) {
   console.error('normal: show deprecation warning');
   assert.strictEqual(er, null);
   assert.strictEqual(stdout, '');
-  assert(/util\.debug is deprecated/.test(stderr));
+  assert(/this function is deprecated/.test(stderr));
   console.log('normal ok');
 });
 
 execFile(node, noDep, function(er, stdout, stderr) {
   console.error('--no-deprecation: silence deprecations');
   assert.strictEqual(er, null);
   assert.strictEqual(stdout, '');
-  assert.strictEqual(stderr, 'DEBUG: This is deprecated\n');
+  assert.strictEqual(stderr.trim(), 'This is deprecated');
   console.log('silent ok');
 });
 
@@ -62,10 +62,8 @@ execFile(node, traceDep, function(er, stdout, stderr) {
   assert.strictEqual(stdout, '');
   const stack = stderr.trim().split('\n');
   // just check the top and bottom.
-  assert(
-    /util\.debug is deprecated\. Use console\.error instead\./.test(stack[1])
-  );
-  assert(/DEBUG: This is deprecated/.test(stack[0]));
+  assert(/this function is deprecated/.test(stack[1]));
+  assert(/This is deprecated/.test(stack[0]));
   console.log('trace ok');
 });