Development of custom plugins for the Visual Studio Code editor

Developing your own plugins for Visual Studio Code is a process that allows you to customize this popular editor to your needs by adding new functionalities. It is an ideal way for developers to improve their productivity when working with code.

Getting Started with the Visual Studio Code API

To develop plugins, you will need knowledge of the basics of JavaScript or TypeScript, as the Visual Studio Code API supports development in these languages. By using the API, you will be able to integrate with the editor, handle events, create new commands, and extend the interface.

Installing Tools

Before you begin, it is worth installing the following tools:

• Node.js and npm — needed for working with JavaScript and managing packages.
• Yeoman and Generator Code — for automatically creating the plugin skeleton.

Installing Yeoman and Generator Code looks like this:

npm install -g yo generator-code

Creating a New Plugin

To create a basic plugin, open the terminal and enter the command:

yo code

This command initiates the creation of a plugin, where you can choose a template, set a name and description. After the process is complete, a new project will be created.

Project Structure

The basic structure contains the following main files:

• package.json — contains metadata about the plugin, such as dependencies and version.
• extension.js or extension.ts — the main file that contains the plugin code.
• README.md — information and usage instructions.

Registering Commands

Registering commands is one of the main functions of plugins. To create new commands, you need to declare them in package.json and implement them in extension.js.

A simple command registration looks like this:

"contributes": {
    "commands": [
        {
            "command": "extension.sayHello",
            "title": "Say Hello"
        }
    ]
}

And the implementation in extension.js:

const vscode = require('vscode');

function activate(context) {
    let disposable = vscode.commands.registerCommand('extension.sayHello', function () {
        vscode.window.showInformationMessage(Hello from your plugin!);
    });

    context.subscriptions.push(disposable);
}

exports.activate = activate;

Testing and Debugging

For testing the plugin, the ability to run the extension in a debugging environment is widely used. By pressing F5 in Visual Studio Code, you will launch a second instance of the editor with the extension enabled.

Publishing the Plugin

After completing development and testing, you can publish the plugin in the Visual Studio Marketplace. For this, you need:

1. Registration in the marketplace and obtaining a Personal Access Token.
2. Installing vsce:

npm install -g vsce

1. Executing the command to publish:

vsce publish

By following these steps, you will master the development of your own Visual Studio Code plugins and will be able to not only automate your daily tasks but also share your developments with other users. Remember that post-release feedback from users will help improve your extension. Having an open-source (or not so much) product will be a big plus in an interview.