document and handle fsevents

dodo.py

@@ -464,7 +464,14 @@ def task_local():
 
 def task_yarn():
     '''
-    run yarn install on package.json
+    Install packages from package.json into the node_modules directory.  Yarn will attempt 
+    on non-OSX operating systems to check/attempt to install fsevents. 
+    This is evidenced in the log files by the messages:
+        info fsevents@2.0.7: The platform "linux" is incompatible with this module.
+        info "fsevents@2.0.7" is an optional dependency and failed compatibility check. Excluding it from installation.
+    Reference:
+        1. [Filter out fsevents warning/info on non supported OS messages](https://github.com/yarnpkg/yarn/issues/2564)
+        2. [Don't warn about incompatible optional dependencies](https://github.com/yarnpkg/yarn/issues/3738)
     '''
     return {
         'task_dep': [

package.json

@@ -6,17 +6,17 @@
   },
   "license": "MPL-2.0",
   "devDependencies": {
+    "@hapi/hoek": "8.2.4",
     "dynalite": "3.0.0",
     "serverless": "1.53.0",
-    "serverless-dynamodb-local": "0.2.38",
     "serverless-domain-manager": "3.3.0",
+    "serverless-dynamodb-local": "0.2.38",
     "serverless-offline": "5.11.0",
+    "serverless-package-external": "1.1.1",
+    "serverless-plugin-aws-alerts": "1.4.0",
+    "serverless-plugin-canary-deployments": "0.4.8",
     "serverless-plugin-tracing": "2.0.0",
     "serverless-python-requirements": "5.0.0",
-    "serverless-package-external": "1.1.1",
-    "serverless-wsgi": "1.7.3",
-    "serverless-plugin-canary-deployments":"0.4.8",
-    "serverless-plugin-aws-alerts": "1.4.0",
-    "@hapi/hoek":"8.2.4"
+    "serverless-wsgi": "1.7.3"
   }
 }