feat: include kubectl version explicitly in API (#43)

Based on feedback from @rix0rrr, explicitly including the version number in the class name. 

This PR also bumps the major version to 2.0 so that it is clear to customers that this library is compatible with AWS CDK 2.0

.projenrc.js

@@ -25,6 +25,7 @@ const project = new awscdk.AwsCdkConstructLibrary({
       run: 'sudo chown superchain /var/run/docker.sock',
     },
   ],
+  majorVersion: 2,
   npmAccess: NpmAccess.PUBLIC,
   releaseTagPrefix: `kubectl-v${SPEC_VERSION}`,
   releaseWorkflowName: releaseWorkflowName,

README.md

@@ -3,15 +3,15 @@
 
 ---
 
-![cdk-constructs: Experimental](https://img.shields.io/badge/cdk--constructs-experimental-important.svg?style=for-the-badge)
+![cdk-constructs: Stable](https://img.shields.io/badge/cdk--constructs-stable-success.svg?style=for-the-badge)
 
 ---
 
 > This library is currently under development. Do not use!
 
 <!--END STABILITY BANNER-->
 
-This module exports a single class called `KubectlLayer` which is a `lambda.LayerVersion` that
+This module exports a single class called `KubectlV24Layer` which is a `lambda.LayerVersion` that
 bundles the [`kubectl`](https://kubernetes.io/docs/reference/kubectl/kubectl/) and the
 [`helm`](https://helm.sh/) command line.
 
@@ -23,11 +23,11 @@ Usage:
 
 ```ts
 // KubectlLayer bundles the 'kubectl' and 'helm' command lines
-import { KubectlLayer } from '@aws-cdk/lambda-layer-kubectl-v23';
+import { KubectlV24Layer } from '@aws-cdk/lambda-layer-kubectl-v23';
 import * as lambda from 'aws-cdk-lib/aws-lambda';
 
 declare const fn: lambda.Function;
-const kubectl = new KubectlLayer(this, 'KubectlLayer');
+const kubectl = new KubectlV24Layer(this, 'KubectlLayer');
 fn.addLayers(kubectl);
 ```
 

src/kubectl-layer.ts

@@ -5,7 +5,7 @@ import { assetHash, ASSET_FILE } from './_asset';
 /**
  * A CDK Asset construct that contains `kubectl` and `helm`.
  */
-export class KubectlLayer extends lambda.LayerVersion {
+export class KubectlV24Layer extends lambda.LayerVersion {
   constructor(scope: Construct, id: string) {
     super(scope, id, {
       code: lambda.Code.fromAsset(ASSET_FILE, {

test/kubectl-layer.integ.ts

@@ -3,15 +3,15 @@ import * as cdk from 'aws-cdk-lib';
 import * as lambda from 'aws-cdk-lib/aws-lambda';
 import * as cr from 'aws-cdk-lib/custom-resources';
 
-import { KubectlLayer } from '../lib';
+import { KubectlV24Layer } from '../lib';
 
 /**
  * Test verifies that kubectl and helm are invoked successfully inside Lambda runtime.
  */
 
 const app = new cdk.App();
 const stack = new cdk.Stack(app, 'lambda-layer-kubectl-integ-stack');
-const layer = new KubectlLayer(stack, 'KubectlLayer');
+const layer = new KubectlV24Layer(stack, 'KubectlLayer');
 
 const runtimes = [
   lambda.Runtime.PYTHON_3_7,

test/kubectl-layer.test.ts

@@ -1,13 +1,13 @@
 import { Stack } from 'aws-cdk-lib';
 import { Template } from 'aws-cdk-lib/assertions';
-import { KubectlLayer } from '../lib';
+import { KubectlV24Layer } from '../lib';
 
 test('synthesized to a layer version', () => {
   // GIVEN
   const stack = new Stack();
 
   // WHEN
-  new KubectlLayer(stack, 'MyLayer');
+  new KubectlV24Layer(stack, 'MyLayer');
 
   // THEN
   Template.fromStack(stack).hasResourceProperties('AWS::Lambda::LayerVersion', {