better way to resolve cicrular dependency

src/aspects/unique-lambda-app-region-stack.ts

@@ -1,10 +1,6 @@
 import type { IAspect, Stack } from "aws-cdk-lib";
 import type { IConstruct } from "constructs";
-import type { GuLambdaFunction } from "../constructs/lambda";
-
-const isGuLambdaFunction = (node: IConstruct): node is GuLambdaFunction => {
-  return node.constructor.name === "GuLambdaFunction";
-};
+import { GuLambdaFunction } from "../constructs/lambda";
 
 export class UniqueLambdaAppRegionStackAspect implements IAspect {
   readonly stack: Stack;
@@ -16,8 +12,7 @@ export class UniqueLambdaAppRegionStackAspect implements IAspect {
   }
 
   public visit(node: IConstruct): void {
-    // using a type guard instead of instanceof to avoid circular dependencies
-    if (isGuLambdaFunction(node)) {
+    if (node instanceof GuLambdaFunction) {
       const combination = `${this.stack.region}:${this.stack.stackName}:${node.app}`;
 
       if (this.seenCombinations.has(combination)) {

src/constructs/lambda/lambda.ts

@@ -7,10 +7,11 @@ import { Bucket } from "aws-cdk-lib/aws-s3";
 import { StringParameter } from "aws-cdk-lib/aws-ssm";
 import { GuDistributable } from "../../types";
 import type { GuLambdaErrorPercentageMonitoringProps, GuLambdaThrottlingMonitoringProps } from "../cloudwatch";
-import { GuLambdaErrorPercentageAlarm, GuLambdaThrottlingAlarm } from "../cloudwatch";
+import { GuLambdaErrorPercentageAlarm, GuLambdaThrottlingAlarm } from "../cloudwatch/lambda-alarms";
 import type { GuStack } from "../core";
-import { AppIdentity, GuDistributionBucketParameter } from "../core";
-import { ReadParametersByName, ReadParametersByPath } from "../iam";
+import { AppIdentity } from "../core/identity";
+import { GuDistributionBucketParameter } from "../core/parameters/s3";
+import { ReadParametersByName, ReadParametersByPath } from "../iam/policies/parameter-store-read";
 
 export interface GuFunctionProps extends GuDistributable, Omit<FunctionProps, "code">, AppIdentity {
   /**

src/utils/mixin/app-aware-construct.ts

@@ -1,5 +1,5 @@
 import { Construct } from "constructs";
-import { AppIdentity } from "../../constructs/core";
+import { AppIdentity } from "../../constructs/core/identity";
 import type { AnyConstructor } from "./types";
 
 export function GuAppAwareConstruct<TBase extends AnyConstructor>(BaseClass: TBase) {