Revert "fix(speed): I cannot figure exactly why, but the type guard f…

…ile massively slowed down synth."

This reverts commit c6a1db1.

lib/local-aspects/iam-path/index.ts

@@ -1,6 +1,7 @@
 import { IAspect } from "aws-cdk-lib";
 import { IConstruct } from "constructs";
 import * as iam from "aws-cdk-lib/aws-iam";
+import { isCfnRole, isCfnUser, isCfnGroup } from "shared-utils";
 
 export class IamPathAspect implements IAspect {
   private readonly iamPath: string;
@@ -10,19 +11,16 @@ export class IamPathAspect implements IAspect {
   }
 
   public visit(node: IConstruct): void {
-    if (node instanceof iam.Role) {
-      const roleResource = node.node.defaultChild as iam.CfnRole;
-      roleResource.addPropertyOverride("Path", this.iamPath);
+    if (node instanceof iam.Role && isCfnRole(node.node.defaultChild)) {
+      node.node.defaultChild?.addPropertyOverride("Path", this.iamPath);
     }
 
-    if (node instanceof iam.User) {
-      const userResource = node.node.defaultChild as iam.CfnUser;
-      userResource.addPropertyOverride("Path", this.iamPath);
+    if (node instanceof iam.User && isCfnUser(node.node.defaultChild)) {
+      node.node.defaultChild.addPropertyOverride("Path", this.iamPath);
     }
 
-    if (node instanceof iam.Group) {
-      const groupResource = node.node.defaultChild as iam.CfnGroup;
-      groupResource.addPropertyOverride("Path", this.iamPath);
+    if (node instanceof iam.Group && isCfnGroup(node.node.defaultChild)) {
+      node.node.defaultChild.addPropertyOverride("Path", this.iamPath);
     }
   }
 }

lib/local-aspects/iam-permissions-boundary/index.ts

@@ -1,6 +1,7 @@
 import { IAspect } from "aws-cdk-lib";
 import { IConstruct } from "constructs";
 import * as iam from "aws-cdk-lib/aws-iam";
+import { isCfnRole } from "shared-utils";
 
 export class IamPermissionsBoundaryAspect implements IAspect {
   private readonly permissionsBoundaryArn: string;
@@ -10,9 +11,11 @@ export class IamPermissionsBoundaryAspect implements IAspect {
   }
 
   public visit(node: IConstruct): void {
-    if (node instanceof iam.Role) {
-      const roleResource = node.node.defaultChild as iam.CfnRole;
-      roleResource.addPropertyOverride("Path", this.permissionsBoundaryArn);
+    if (node instanceof iam.Role && isCfnRole(node.node.defaultChild)) {
+      node.node.defaultChild.addPropertyOverride(
+        "PermissionsBoundary",
+        this.permissionsBoundaryArn,
+      );
     }
   }
 }

lib/packages/shared-utils/cdk-type-guards.ts

@@ -0,0 +1,13 @@
+import * as iam from "aws-cdk-lib/aws-iam";
+
+export function isCfnRole(child: any): child is iam.CfnRole {
+  return child instanceof iam.CfnRole;
+}
+
+export function isCfnUser(child: any): child is iam.CfnUser {
+  return child instanceof iam.CfnUser;
+}
+
+export function isCfnGroup(child: any): child is iam.CfnGroup {
+  return child instanceof iam.CfnGroup;
+}

lib/packages/shared-utils/index.ts

@@ -1,3 +1,4 @@
+export * from "./cdk-type-guards";
 export * from "./feature-flags";
 export * from "./package-actions/getAvailableActions";
 export * from "./package-check";