doc: deprecate process.nextTick

doc/api/deprecations.md

@@ -3569,6 +3569,22 @@ Calling `Hash` class directly with `Hash()` or `new Hash()` is
 deprecated due to being internals, not intended for public use.
 Please use the [`crypto.createHash()`][] method to create Hash instances.
 
+### DEP0180: `process.nextTick`
+
+<!-- YAML
+changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/51280
+    description: Documentation-only deprecation.
+-->
+
+Type: Documentation-only
+
+The [`process.nextTick()`][] API is deprecated due to performance
+issues with async callbacks and unpredictable behavior
+in promise and async/await scenarios.
+Please use [`queueMicrotask()`][] instead.
+
 [NIST SP 800-38D]: https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf
 [RFC 6066]: https://tools.ietf.org/html/rfc6066#section-3
 [RFC 8247 Section 2.4]: https://www.rfc-editor.org/rfc/rfc8247#section-2.4
@@ -3661,7 +3677,9 @@ Please use the [`crypto.createHash()`][] method to create Hash instances.
 [`process.exitCode`]: process.md#processexitcode_1
 [`process.getActiveResourcesInfo()`]: process.md#processgetactiveresourcesinfo
 [`process.mainModule`]: process.md#processmainmodule
+[`process.nextTick()`]: process.md#processnexttickcallback-args
 [`punycode`]: punycode.md
+[`queueMicrotask()`]: globals.md#queuemicrotaskcallback
 [`readable.readableEnded`]: stream.md#readablereadableended
 [`request.abort()`]: http.md#requestabort
 [`request.connection`]: http.md#requestconnection

lib/internal/process/task_queues.js

@@ -98,8 +98,13 @@ function processTicksAndRejections() {
   setHasRejectionToWarn(false);
 }
 
-// `nextTick()` will not enqueue any callback when the process is about to
-// exit since the callback would not have a chance to be executed.
+/**
+ * `nextTick()` will not enqueue any callback when the process is about to
+ * exit since the callback would not have a chance to be executed.
+ * @deprecated since REPLACEME
+ * @param {() => any} callback
+ * @returns {void}
+ */
 function nextTick(callback) {
   validateFunction(callback, 'callback');