How to Share Code Between Node.js Applications? - 面试题

In Node.js, sharing code is typically achieved through the following methods:

Modularization: Using Node.js's module system, you can create reusable modules and import them via the require function. Modules can be single files or directories containing multiple files.
npm Packages: If you need to share code across multiple projects, package the code into an npm package and publish it to the npm registry. Other projects can then install and use this package via the npm install command.
Private Registry: For internal or private projects, create private npm packages and publish them to a private npm registry or use services like GitHub Package Registry for management.
Git Submodules: By utilizing Git's submodule feature, include one Git repository as a submodule of another. This allows you to maintain the shared code independently with version control while easily integrating it into the main project.
Symbolic Links (Symlinks): In a local development environment, use symbolic links to link to local shared libraries or code directories, enabling code reuse without copying the code.
Monorepo Strategy: Using a single repository (Monorepo) to manage multiple related projects. This approach facilitates sharing code libraries and maintaining common dependencies while keeping the code synchronized for updates.

By employing these methods, you can effectively share and reuse code across different Node.js applications, improving development efficiency and reducing code redundancy.