[Doc] Add note about Node 12 deprecation warnings (#2566)

* Add note about Node 12 deprecation warnings * Update message based on feedback Co-authored-by: Devagouda <[email protected]>
magento · Jul 21, 2020 · 4c649b6 · 4c649b6
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diff --git a/pwa-devdocs/src/tutorials/pwa-studio-fundamentals/index.md b/pwa-devdocs/src/tutorials/pwa-studio-fundamentals/index.md
@@ -17,6 +17,16 @@ During the course of the tutorials, you will create a new storefront application
 -   Node >= 10.14.1
 -   Yarn (recommended) or NPM
 
+### Node 12 deprecation warning
+
+If you are using Node 12, you may see the following deprecation warning in the log when you run `yarn watch:venia`.
+
+```sh
+(node:89176) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
+```
+
+This is caused by a project dependency used by PWA Studio and not by PWA Studio itself.
+
 ## Tutorials available
 
 -   [Project setup][] - Setup a local development environment using the scaffolding tool

diff --git a/pwa-devdocs/src/tutorials/pwa-studio-fundamentals/project-setup/index.md b/pwa-devdocs/src/tutorials/pwa-studio-fundamentals/project-setup/index.md
@@ -31,6 +31,14 @@ yarn -v
 
 If entering these commands does not show you a version number, install Node.js, Yarn, or both.
 
+### Node 12 deprecation warning
+
+If you are using Node 12, you may see the following deprecation warning in the log when you run `yarn watch:venia`.
+
+```sh
+(node:89176) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
+```
+
 ## Run the scaffolding tool
 
 In your terminal, navigate to the directory where you want to install your storefront project and run the scaffolding tool:

diff --git a/pwa-devdocs/src/venia-pwa-concept/features/modular-components/index.md b/pwa-devdocs/src/venia-pwa-concept/features/modular-components/index.md
@@ -13,6 +13,16 @@ This lets you leverage Venia functionality in your own PWA projects.
 
 -   Node >=10.14.1
 
+### Node 12 deprecation warning
+
+If you are using Node 12, you may see the following deprecation warning in the log when you run `yarn watch:venia`.
+
+```sh
+(node:89176) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
+```
+
+This is caused by a project dependency used by PWA Studio and not by PWA Studio itself.
+
 ## Install package dependency
 
 Use **Yarn** to install the `@magento/venia-concept` package:

diff --git a/pwa-devdocs/src/venia-pwa-concept/setup/index.md b/pwa-devdocs/src/venia-pwa-concept/setup/index.md
@@ -17,6 +17,16 @@ If you experience problems with the project setup, see [Troubleshooting][] in th
 -   Python 2.7 and build tools, [see the Installation instructions on `node-gyp`](https://github.com/nodejs/node-gyp#installation) for your platform.
 -   [A running instance of Magento 2.3.1 or above](#choosing-the-magento-23-backend)
 
+### Node 12 deprecation warning
+
+If you are using Node 12, you may see the following deprecation warning in the log when you run `yarn watch:venia`.
+
+```sh
+(node:89176) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
+```
+
+This is caused by a project dependency used by PWA Studio and not by PWA Studio itself.
+
 ## Step 1. Clone the PWA Studio repository
 
 Clone the [PWA Studio][] repository into your development environment.