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Modules and Imports

Modules and Imports in JavaScript Modules allow JavaScript code to be divided into smaller, reusable files. This improves code maintainability and organization.

This Privacy Policy describes how Alevio ("we," "our," or "us"), founded and led by Felix Danyluk (CEO and Founder), collects, uses, and discloses your information when you use our application, website, and services (collectively, the "Service").

Important:

Alevio is designed as a privacy-first application. All your personal data is stored locally on your device and is not transferred to our servers unless you explicitly activate cloud functions.

1. Information We Collect

Alevio operates primarily as a local application.
The information stored includes:

Personal information: name and preferences (stored locally only).
Usage data: daily responses and insights (stored locally only).
Device information: app preferences and settings (stored locally only).
AI Chat data: when using AI features, conversation history is stored locally on your device.
Image data: when using vision features, uploaded images are processed locally and may be temporarily stored for AI analysis.
Generated images: DALL-E generated images are saved locally on your device for display purposes.
Usage limits: daily usage tracking for cloud models and image generation is stored locally to enforce fair usage policies.

2. How We Use Your Information

We use the information we collect to:

Provide and maintain our Service
Improve and personalize your experience
Communicate with you about updates and features
Ensure the security and integrity of our Service

3. Data Storage and Security

Your data is stored locally on your device using secure, industry-standard encryption. We do not have access to your personal information unless you explicitly choose to share it through cloud features.

4. Third-Party Services

Alevio may integrate with third-party AI services for enhanced functionality. When using these features, only the necessary data is transmitted to provide the service. We carefully select partners who share our commitment to privacy.

Cloud Services: When you use cloud-based AI models (such as GPT-4o, Claude, or other cloud providers), your messages and uploaded images are sent to these services for processing. We use secure API connections and do not store your data on our servers.
Image Generation: When using DALL-E image generation, your text prompts are sent to OpenAI's servers to generate images. Generated images are returned to your device and stored locally.
Web Search: When using web search features, your search queries are sent to our search partners to retrieve relevant information. Search results are processed and returned to your device.
Apple Shortcuts: When using Apple Shortcuts integration, your device's Shortcuts app may access Alevio through URL schemes. This integration is handled entirely by your device's operating system.

5. Your Rights

You have the right to:

Access your personal data stored on your device
Delete your data at any time through the app settings
Opt out of cloud features and keep all data local
Contact us with any privacy concerns

6. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date.

7. Contact Us

If you have any questions about this Privacy Policy or our privacy practices, please contact us at:

privacy.alevio@gmail.com

Exporting in CommonJS

Create a file called math.js:

function add(a, b) {
  return a + b;
}
  
function subtract(a, b) {
  return a - b;
}
  
// Export functions
module.exports = { add, subtract };

Importing in CommonJS

In app.js, import the module using require():

const math = require("./math");

console.log(math.add(5, 3)); // Outputs: 8
console.log(math.subtract(10, 4)); // Outputs: 6

Exporting a Single Value

module.exports = function (name) {
  return `Hello, ${name}!`;
};

Importing a single exported function:

const greet = require("./greet");
console.log(greet("Alice")); // Outputs: Hello, Alice!

ES6 Modules (ESM)

ES6 Modules are the modern way to work with modules in JavaScript. They use export and import and work in both browsers and Node.js (with "type": "module" in package.json).

Named Exports

Create math.js:

export function add(a, b) {
  return a + b;
}
  
export function subtract(a, b) {
  return a - b;
}

Default Exports

Only one default export per file:

export default function multiply(a, b) {
  return a * b;
}

Importing in ES6 Modules

Importing Named Exports

In app.js:

import { add, subtract } from "./math.js";

console.log(add(5, 3)); // Outputs: 8
console.log(subtract(10, 4)); // Outputs: 6

Importing a Default Export

import multiply from "./math.js";
console.log(multiply(4, 5)); // Outputs: 20

Importing Everything from a Module

import * as math from "./math.js";

console.log(math.add(2, 3));
console.log(math.subtract(7, 2));

Using ES6 Modules in Node.js

To use ES6 modules in Node.js, add "type": "module" in package.json:

Then, use import instead of require().

import { add } from "./math.js";
console.log(add(10, 5));

Differences Between CommonJS and ES6 Modules

FeatureCommonJS (require)ES6 Modules (import)Default inNode.jsModern JavaScript (ES6)Syntaxrequire() / module.exportsimport / exportLoad TypeSynchronousAsynchronousCan be used in BrowsersNo (without bundlers)Yes (Supported in modern browsers)

When to Use Which?

Use CommonJS for Node.js applications that do not require modern JavaScript syntax.
Use ES6 Modules for modern JavaScript projects, browsers, and future-proof development.

Conclusion

Modules improve code reusability and organization. ES6 Modules (import/export) are the standard for modern JavaScript, while CommonJS (require/module.exports) is still widely used in Node.js. The next section will cover working with databases in JavaScript, focusing on connecting Node.js to relational and NoSQL databases.