How do I manage dependencies when reusing factory functions across multiple modules

1. Centralized Configuration

Create a centralized configuration file or module that exports common dependencies and configuration settings. This allows all factory functions to import and use the same configurations, ensuring consistency across modules.

javascript
// config.js
export const config = {
    apiUrl: "https://api.example.com",
    timeout: 5000,
};

// factory1.js
import { config } from "./config.js";

export function factoryOne() {
    // Use config.apiUrl and config.timeout
}

// factory2.js
import { config } from "./config.js";

export function factoryTwo() {
    // Use config.apiUrl and config.timeout
}

2. Dependency Injection

Implement a simple dependency injection mechanism where you pass dependencies as parameters to your factory functions. This allows for more flexibility and easier testing.

javascript
// factory1.js
export function factoryOne({ apiUrl }) {
    return {
        fetchData: async () => {
            const response = await fetch(apiUrl);
            return response.json();
        },
    };
}

// factory2.js
export function factoryTwo({ apiUrl }) {
    return {
        sendData: async (data) => {
            await fetch(apiUrl, {
                method: "POST",
                body: JSON.stringify(data),
            });
        },
    };
}

// main.js
import { factoryOne } from "./factory1.js";
import { factoryTwo } from "./factory2.js";
import { config } from "./config.js";

const serviceOne = factoryOne({ apiUrl: config.apiUrl });
const serviceTwo = factoryTwo({ apiUrl: config.apiUrl });

3. Shared Module for Common Dependencies

If you have multiple dependencies that need to be shared across factories, consider creating a shared module that exports these dependencies.

javascript
// sharedDependencies.js
export const sharedServices = {
    logger: console,
    database: new DatabaseConnection(),
};

// factory1.js
import { sharedServices } from "./sharedDependencies.js";

export function factoryOne() {
    return {
        logData: (data) => sharedServices.logger.log(data),
    };
}

// factory2.js
import { sharedServices } from "./sharedDependencies.js";

export function factoryTwo() {
    return {
        saveData: (data) => sharedServices.database.save(data),
    };
}

4. Version Control for Dependencies

If your project scales up and you have multiple modules with different versions of the same dependency, consider using a tool like `npm` or `yarn` workspaces to manage versions effectively. This helps avoid conflicts and ensures that all modules are using compatible versions of shared dependencies.

Conclusion

By using centralized configurations, dependency injection, shared modules, and proper version control, you can effectively manage dependencies when reusing factory functions across multiple modules in a Bun plugin. This approach enhances maintainability and reduces the risk of conflicts as your project grows.