Injecting dependencies to an AWS Lambda function

injectLambdaDependencies.js

// Dependency injection helper
const injectLambdaDependencies = (handle, dependencyMap) => (event, context) => {
   const enhancedContext = Object.assign({}, context, dependencyMap)

   return handle(event, enhancedContext)
}

// Dependencies, possibly returned by a factory
const dependencyMap = { doSomething: () => 'foo bar' }

// Lambda function
async function handle(event, context) {
  console.log('context', context)
}

// Enhanced Lambda - this is what needs to be exported as the actual Lambda function
const handleWithDependencies = injectLambdaDependencies(handle, dependencyMap)

// When `handleWithDependencies` is invoked, `doSomething` will now be available on the `context` object.

Does it also make your serverless environment variables available to the lambda function?