vscode-zoterolens/src/extension.ts

import { commands, ExtensionContext, languages } from "vscode";
import { ZoteroCodeLensProvider } from "./zoteroCodeLensProvider";
import { openZoteroPDF, showInZotero } from "./commands";

export function activate(context: ExtensionContext) {
  // Register the command
  let commandDisposable2 = commands.registerCommand(
    "zoterolens.showInZotero",
    showInZotero
  );

  let commandDisposable3 = commands.registerCommand(
    "zoterolens.openZoteroPDF",
    openZoteroPDF
  );

  // Get a document selector for the CodeLens provider
  // This one is any file that has the language of javascript
  let docSelector = {
    language: "markdown",
    scheme: "file"
  };

  // Register our CodeLens provider
  let codeLensProviderDisposable = languages.registerCodeLensProvider(
    docSelector,
    new ZoteroCodeLensProvider()
  );

  // Push the command and CodeLens provider to the context so it can be disposed of later
  context.subscriptions.push(commandDisposable2);
  context.subscriptions.push(commandDisposable3);
  context.subscriptions.push(codeLensProviderDisposable);

}

export function deactivate() {}