'Module not found' error from JSII kernel in non-typescript languages

[nija-at]

🐛 Bug Report

Affected Languages

• TypeScript or Javascript
• Python
• Java
• .NET (C#, F#, ...)

General Information

• JSII Version: 1.9.0
• Platform: OSX

What is the problem?

The following code throws the error - Module '@aws-cdk/aws-lambda' not found - with a stack trace from the kernel. This occurs exactly at the line where a Fn.conditionIf() is called and assigned to a variable.

package com.myorg;
import software.amazon.awscdk.core.App;
import software.amazon.awscdk.core.ICfnConditionExpression;
import software.amazon.awscdk.core.Fn;
import software.amazon.awscdk.core.Stack;
import software.amazon.awscdk.services.lambda.*;
import java.util.List;
import java.util.concurrent.locks.Condition;
import java.util.ArrayList;
public class HelloCdkJavaApp {
    public static void main(final String[] args) {
        final App app = new App();
        final Stack stack = new Stack(app, "mystack");
        final List<String> groups = new ArrayList<String>();
        groups.add("securitygroup1");
        final List<String> subnets = new ArrayList<String>();
        subnets.add("subnet1");
        final CfnFunction.VpcConfigProperty prop = new CfnFunction.VpcConfigProperty.Builder()
            .securityGroupIds(groups)
            .subnetIds(subnets)
            .build();
        final ICfnConditionExpression conditional = Fn.conditionIf("some condition", prop, "AWS::NoValue");
        new CfnFunction(stack, "fn", CfnFunctionProps.builder()
            .code(CfnFunction.CodeProperty.builder().zipFile("zipFile").build())
            .role("role")
            .handler("index.handler")
            .runtime("runtime")
            .vpcConfig(conditional)
            .build());
        app.synth();
    }
}

Verbose Log

https://gist.github.com/nija-at/cf1f83a3aa55894127e1766fd1fe6fba