feat: stop generating legacy cloudformation resources

BREAKING CHANGE: the deprecated `cloudformation.XxxResource` classes have
been removed. Use the `CfnXxx` classes instead.

packages/@aws-cdk/aws-codepipeline/lib/custom-action-registration.ts

@@ -1,6 +1,6 @@
 import cpapi = require('@aws-cdk/aws-codepipeline-api');
 import cdk = require('@aws-cdk/cdk');
-import { cloudformation } from './codepipeline.generated';
+import { CfnCustomActionType } from './codepipeline.generated';
 
 /**
  * The creation attributes used for defining a configuration property
@@ -119,7 +119,7 @@ export class CustomActionRegistration extends cdk.Construct {
   constructor(parent: cdk.Construct, id: string, props: CustomActionRegistrationProps) {
     super(parent, id);
 
-    new cloudformation.CustomActionTypeResource(this, 'Resource', {
+    new CfnCustomActionType(this, 'Resource', {
       category: props.category,
       inputArtifactDetails: {
         minimumCount: props.artifactBounds.minInputs,

tools/cfn2ts/lib/codegen.ts

@@ -71,19 +71,10 @@ export default class CodeGenerator {
 
       const cfnName = SpecName.parse(name);
       const resourceName = genspec.CodeName.forCfnResource(cfnName);
-      const legacyResourceName = genspec.CodeName.forLegacyResource(cfnName);
       this.code.line();
 
       this.emitResourceType(resourceName, resourceType);
       this.emitPropertyTypes(name, resourceName);
-
-      // emit the "cloudformation.XxxResource" classes for backwards compatibility
-      // those will also include a deprecation warning.
-      this.code.line('// legacy "cloudformation" namespace (will be deprecated soon)');
-      this.code.openBlock('export namespace cloudformation');
-      this.emitResourceType(legacyResourceName, resourceType, resourceName);
-      this.emitPropertyTypes(name, legacyResourceName);
-      this.code.closeBlock();
     }
   }
 

tools/cfn2ts/lib/genspec.ts

@@ -8,7 +8,6 @@ import { itemTypeNames, PropertyAttributeName, scalarTypeNames, SpecName } from
 import util = require('./util');
 
 const RESOURCE_CLASS_PREFIX = 'Cfn';
-const LEGACY_RESOURCE_CLASS_POSTFIX = 'Resource';
 
 export const CORE_NAMESPACE = 'cdk';
 
@@ -25,20 +24,6 @@ export class CodeName {
     return new CodeName(packageName(specName), '', className, specName);
   }
 
-  public static forLegacyResource(specName: SpecName): CodeName {
-    let className = specName.resourceName;
-
-    // add a "Resource" postfix to the class name (unless there is already a resource postfix).
-    if (!className.endsWith(LEGACY_RESOURCE_CLASS_POSTFIX)) {
-      className += LEGACY_RESOURCE_CLASS_POSTFIX;
-    } else {
-      // tslint:disable-next-line:no-console
-      console.error('INFO: Resource class %s already had a %s postfix, so we didn\'t add one', className, LEGACY_RESOURCE_CLASS_POSTFIX);
-    }
-
-    return new CodeName(packageName(specName), '', className, specName);
-  }
-
   public static forResourceProperties(resourceName: CodeName): CodeName {
     return new CodeName(resourceName.packageName, resourceName.namespace, `${resourceName.className}Props`, resourceName.specName);
   }