AliceAndBob

import cloudform, { Lambda, IAM, Fn } from 'cloudform';
import { FunctionProperties } from 'cloudform/types/lambda/function';
import { readFileSync } from 'fs';
const LambdaExecutionRole = 'LambdaExecutionRole', Alice = 'Alice', Bob = 'Bob';

function lambdaFunction(functionCode: string, options?: Partial<FunctionProperties>) {
  return new Lambda.Function({
    Code: { ZipFile: functionCode },
    Handler: "index.main",
    Role: Fn.GetAtt(LambdaExecutionRole, "Arn"),
    Runtime: "nodejs6.10", ...options
  });
}

export default cloudform({
  Resources: {
    [Alice]: lambdaFunction(readFileSync('Alice.js', 'utf-8'), {
      Environment: {
        Variables: { BobFunction: Fn.GetAtt(Bob, "Arn") }
      }
    }),
    [Bob]: lambdaFunction(readFileSync('Bob.js', 'utf-8')),
    ... // LambdaExecutionRole see below 
  }
})