Welcome to your VS Code Extension

What's in the folder

This folder contains all of the files necessary for your extension.
package.json - this is the manifest file in which you declare your extension and command.
- The sample plugin registers a command and defines its title and command name. With this information VS Code can show the command in the command palette. It doesn’t yet need to load the plugin.
src/extension.ts - this is the main file where you will provide the implementation of your command.
- The file exports one function, activate, which is called the very first time your extension is activated (in this case by executing the command). Inside the activate function we call registerCommand.
- We pass the function containing the implementation of the command as the second parameter to registerCommand.

install the recommended extensions (amodio.tsl-problem-matcher, ms-vscode.extension-test-runner, and dbaeumer.vscode-eslint)

Press F5 to open a new window with your extension loaded.
Run your command from the command palette by pressing (Ctrl+Shift+P or Cmd+Shift+P on Mac) and typing calc check.
Set breakpoints in your code inside src/extension.ts to debug your extension.
Find output from your extension in the debug console.

You can relaunch the extension from the debug toolbar after changing code in src/extension.ts.
You can also reload (Ctrl+R or Cmd+R on Mac) the VS Code window with your extension to load your changes.

You can open the full set of our API when you open the file node_modules/@types/vscode/index.d.ts.

Install the Extension Test Runner
Run the "watch" task via the Tasks: Run Task command. Make sure this is running, or tests might not be discovered.
Open the Testing view from the activity bar and click the Run Test" button, or use the hotkey Ctrl/Cmd + ; A
See the output of the test result in the Test Results view.
Make changes to src/test/extension.test.ts or create new test files inside the test folder.
- The provided test runner will only consider files matching the name pattern **.test.ts.
- You can create folders inside the test folder to structure your tests any way you want.

Reduce the extension size and improve the startup time by bundling your extension.
Publish your extension on the VS Code extension marketplace.
Automate builds by setting up Continuous Integration.