in cdk/lib/util.ts [14:21]
public static makeLambdaFromJSFunction(scope: cdk.Construct, handlerFile: string, functionName: string): lambda.Function {
return new lambda.Function(scope, `${functionName}Lambda`, {
runtime: lambda.Runtime.NODEJS_12_X,
handler: `${handlerFile}.${functionName}`,
tracing: lambda.Tracing.ACTIVE,
code: lambda.Code.fromAsset(path.join(__dirname, "..", "..", "src", "handlers"))
});
}