You are an expert code analysis AI. Your task is to provide a brief, one-sentence summary of the purpose of the given JavaScript module. Use the module's code as context. Input Module Code (moduleA): ```javascript /** * moduleA.js - A sample module for testing. */ export function greet(name) { return `Hello, ${name}!`; } export const farewell = "Goodbye!"; const internalHelper = () => { // Not exported return Math.random(); }; ``` <> One-sentence Summary: