extension.ts

import * as vscode from 'vscode';

export function activate(context: vscode.ExtensionContext) {

	console.log('Congratulations, your extension "tertip" is now active!');


	const editor = vscode.window.activeTextEditor;

	let disposable = vscode.commands.registerCommand('tertip.clearSpaces', () => {
        if (editor) {
            const document = editor.document;
			const selection = editor.selection;

			const selectedPortion = document.getText(selection);
			const withoutSpaces = selectedPortion.replace(/\s+/g, '');
			editor.edit(editBuilder => {
				editBuilder.replace(selection, withoutSpaces);
			});
	   vscode.window.showInformationMessage('Everything is non-spaces!');
        }
		
	});

	context.subscriptions.push(disposable);
}

export function deactivate() {}