feat: Log deprecation on usage

README.md

@@ -2,9 +2,12 @@
 
 ## DEPRECATED
 
-Please upgrade to Serverless Framework 2.3.0, this is now supported natively.
+All functionalities as provided by this plugin are now supported by Serverless Framework natively:
 
-Below is the legacy readme for reference:
+- With version v2.3.0 the default variable regex was updated to not collide with AWS pseudo parameters
+- With version v2.50.0, new variables sources `${aws:accountId}` and `${aws:region}` were introduced, which can be used in properties where CloudFormation pseudo paramaters cannot be used. Please use them instead of `#{AWS::...}` format as supported by this plugin
+
+_Below is the legacy readme for reference:_
 
 ## Original Readme
 

lib/index.js

@@ -1,10 +1,28 @@
 'use strict';
 
+const semver = require('semver');
+
 class ServerlessAWSPseudoParameters {
   constructor(serverless, options) {
     this.serverless = serverless;
     this.options = options || {};
     this.hooks = {
+      initialize: () => {
+        const frameworkVersion = (() => {
+          try {
+            return require('serverless/package').version;
+          } catch (error) {
+            return null;
+          }
+        })();
+        if (!frameworkVersion) return;
+        if (!semver.gte(frameworkVersion, '2.50.0')) return;
+        this.serverless.logDeprecation(
+          'OBSOLETE_PSEUDO_PARAMETERS_PLUGIN',
+          '"serverless-pseudo-parameters" plugin is no longer needed. Please uninstall it as it will not work with next Framework major release.\n' +
+            'Instead rely on "${aws:region}" and "${aws:accountId}" Serverless Framework variables'
+        );
+      },
       'after:aws:package:finalize:mergeCustomProviderResources': this.addParameters.bind(this)
     };
     this.skipRegionReplace = get(

package.json

@@ -1,6 +1,9 @@
 {
   "name": "serverless-pseudo-parameters",
   "version": "2.5.0",
+  "dependencies": {
+    "semver": "^7.3.5"
+  },
   "devDependencies": {
     "jest": "^24.9.0"
   },