add runtime param

Author: anthony-nhs

packages/cdkConstructs/src/constructs/TypescriptLambdaFunction.ts

@@ -45,7 +45,7 @@ export interface TypescriptLambdaFunctionProps {
   /**
    * A map of environment variables to set for the lambda function.
    */
-  readonly environmentVariables: {[key: string]: string}
+  readonly environmentVariables: { [key: string]: string }
   /**
    * Optional additional IAM policies to attach to role the lambda executes as.
    */
@@ -77,15 +77,23 @@ export interface TypescriptLambdaFunctionProps {
    * @default 50 seconds
    */
   readonly timeoutInSeconds?: number
+
+  /**
+   * Optional runtime for the Lambda function.
+   * @default Runtime.NODEJS_22_X
+   */
+  readonly runtime?: Runtime
 }
 
 const insightsLayerArn = "arn:aws:lambda:eu-west-2:580247275435:layer:LambdaInsightsExtension:60"
 const getDefaultLambdaOptions = (
   packageBasePath: string,
   projectBaseDir: string,
-  timeoutInSeconds: number):NodejsFunctionProps => {
+  timeoutInSeconds: number,
+  runtime: Runtime
+): NodejsFunctionProps => {
   return {
-    runtime: Runtime.NODEJS_22_X,
+    runtime: runtime,
     projectRoot: projectBaseDir,
     memorySize: 256,
     timeout: Duration.seconds(timeoutInSeconds),
@@ -170,7 +178,7 @@ export class TypescriptLambdaFunction extends Construct {
    * @param id - The scoped construct ID. Must be unique amongst siblings in the same scope
    * @param props - Configuration properties for the Lambda function
    */
-  public constructor(scope: Construct, id: string, props: TypescriptLambdaFunctionProps){
+  public constructor(scope: Construct, id: string, props: TypescriptLambdaFunctionProps) {
     super(scope, id)
 
     // Destructure with defaults
@@ -186,7 +194,8 @@ export class TypescriptLambdaFunction extends Construct {
       commitId,
       layers = [], // Default to empty array
       projectBaseDir,
-      timeoutInSeconds = 50
+      timeoutInSeconds = 50,
+      runtime = Runtime.NODEJS_24_X
     } = props
 
     // Imports
@@ -266,7 +275,7 @@ export class TypescriptLambdaFunction extends Construct {
     })
 
     const lambdaFunction = new NodejsFunction(this, functionName, {
-      ...getDefaultLambdaOptions(packageBasePath, projectBaseDir, timeoutInSeconds),
+      ...getDefaultLambdaOptions(packageBasePath, projectBaseDir, timeoutInSeconds, runtime),
       functionName: `${functionName}`,
       entry: join(projectBaseDir, packageBasePath, entryPoint),
       role,
@@ -278,7 +287,7 @@ export class TypescriptLambdaFunction extends Construct {
         COMMIT_ID: commitId
       },
       logGroup,
-      layers:[
+      layers: [
         insightsLambdaLayer,
         ...layers
       ]

packages/cdkConstructs/tests/functionConstruct.test.ts

@@ -1,7 +1,7 @@
 import {App, assertions, Stack} from "aws-cdk-lib"
 import {ManagedPolicy, PolicyStatement, Role} from "aws-cdk-lib/aws-iam"
 import {LogGroup} from "aws-cdk-lib/aws-logs"
-import {Function, LayerVersion} from "aws-cdk-lib/aws-lambda"
+import {Function, LayerVersion, Runtime} from "aws-cdk-lib/aws-lambda"
 import {Template, Match} from "aws-cdk-lib/assertions"
 import {
   describe,
@@ -114,7 +114,7 @@ describe("functionConstruct works correctly", () => {
   test("it has the correct lambda", () => {
     template.hasResourceProperties("AWS::Lambda::Function", {
       Handler: "index.handler",
-      Runtime: "nodejs22.x",
+      Runtime: "nodejs24.x",
       FunctionName: "testLambda",
       MemorySize: 256,
       Architectures: ["x86_64"],
@@ -166,7 +166,7 @@ describe("functionConstruct works correctly with environment variables", () => {
 
   test("environment variables are added correctly", () => {
     template.hasResourceProperties("AWS::Lambda::Function", {
-      Runtime: "nodejs22.x",
+      Runtime: "nodejs24.x",
       FunctionName: "testLambda",
       Environment: {Variables: {foo: "bar"}}
     })
@@ -249,7 +249,7 @@ describe("functionConstruct works correctly with additional layers", () => {
   test("it has the correct layers added", () => {
     template.hasResourceProperties("AWS::Lambda::Function", {
       Handler: "index.handler",
-      Runtime: "nodejs22.x",
+      Runtime: "nodejs24.x",
       FunctionName: "testLambda",
       MemorySize: 256,
       Architectures: ["x86_64"],
@@ -289,11 +289,42 @@ describe("functionConstruct works correctly with custom timeout", () => {
   test("it has the correct timeout", () => {
     template.hasResourceProperties("AWS::Lambda::Function", {
       Handler: "index.handler",
-      Runtime: "nodejs22.x",
+      Runtime: "nodejs24.x",
       FunctionName: "testLambda",
       MemorySize: 256,
       Architectures: ["x86_64"],
       Timeout: 120
     })
   })
 })
+
+describe("functionConstruct works correctly with different runtime", () => {
+  let stack: Stack
+  let app: App
+  let template: assertions.Template
+  beforeAll(() => {
+    app = new App()
+    stack = new Stack(app, "lambdaConstructStack")
+    new TypescriptLambdaFunction(stack, "dummyFunction", {
+      functionName: "testLambda",
+      additionalPolicies: [],
+      packageBasePath: "packages/cdkConstructs",
+      entryPoint: "tests/src/dummyLambda.ts",
+      environmentVariables: {},
+      logRetentionInDays: 30,
+      logLevel: "DEBUG",
+      version: "1.0.0",
+      commitId: "abcd1234",
+      projectBaseDir: resolve(__dirname, "../../.."),
+      runtime: Runtime.NODEJS_22_X
+    })
+    template = Template.fromStack(stack)
+  })
+
+  test("it has correct runtime", () => {
+    template.hasResourceProperties("AWS::Lambda::Function", {
+      Runtime: "nodejs22.x",
+      FunctionName: "testLambda"
+    })
+  })
+})