export async function activate()

in src/extension/rn-extension.ts [82:232]
133 lines of code
9 McCabe index (conditional complexity)

export async function activate(context: vscode.ExtensionContext): Promise<void> {
    const extensionName = getExtensionName();
    const appVersion = getExtensionVersion();
    if (!appVersion) {
        throw new Error(localize("ExtensionVersionNotFound", "Extension version is not found"));
    }

    if (extensionName) {
        const extensionFirstTimeInstalled = !cachedVersionExists();
        const isUpdatedExtension = isUpdatedVersion(appVersion);

        if (extensionName.includes("preview")) {
            if (showTwoVersionFoundNotification()) {
                return;
            }
        } else if (isUpdatedExtension) {
            showChangelogNotificationOnUpdate(appVersion);
        }

        if (isUpdatedExtension) {
            TipNotificationService.getInstance().updateTipsConfig();
        }

        void TipNotificationService.getInstance().showTipNotification();

        SurveyService.getInstance().setExtensionFirstTimeInstalled(extensionFirstTimeInstalled);
        void SurveyService.getInstance().promptSurvey();
    }

    outputChannelLogger.debug("Begin to activate...");
    outputChannelLogger.debug(`Extension version: ${appVersion}`);
    // eslint-disable-next-line @typescript-eslint/no-var-requires
    const ExtensionTelemetryReporter = require("vscode-extension-telemetry").default;
    const reporter = new ExtensionTelemetryReporter(
        APP_NAME,
        appVersion,
        Telemetry.APPINSIGHTS_INSTRUMENTATIONKEY,
    );
    const configProvider = (debugConfigProvider = new ReactNativeDebugConfigProvider());
    const dymConfigProvider = (dynamicDebugConfigProvider =
        new ReactNativeDebugDynamicConfigProvider());
    const completionItemProviderInst = new LaunchJsonCompletionProvider();
    const workspaceFolders: readonly vscode.WorkspaceFolder[] | undefined =
        vscode.workspace.workspaceFolders;
    let extProps: ICommandTelemetryProperties = {};
    if (workspaceFolders) {
        extProps = {
            workspaceFoldersCount: { value: workspaceFolders.length, isPii: false },
        };
    }

    EXTENSION_CONTEXT = context;

    return entryPointHandler.runApp(
        APP_NAME,
        appVersion,
        ErrorHelper.getInternalError(InternalErrorCode.ExtensionActivationFailed),
        reporter,
        async () => {
            EXTENSION_CONTEXT.subscriptions.push(
                vscode.workspace.onDidChangeWorkspaceFolders(event =>
                    onChangeWorkspaceFolders(event),
                ),
            );
            EXTENSION_CONTEXT.subscriptions.push(
                vscode.workspace.onDidChangeConfiguration(() => onChangeConfiguration()),
            );
            EXTENSION_CONTEXT.subscriptions.push(TipNotificationService.getInstance());
            EXTENSION_CONTEXT.subscriptions.push(SurveyService.getInstance());

            EXTENSION_CONTEXT.subscriptions.push(
                vscode.debug.registerDebugConfigurationProvider(
                    DEBUG_TYPES.REACT_NATIVE,
                    configProvider,
                ),
            );

            EXTENSION_CONTEXT.subscriptions.push(
                vscode.debug.registerDebugConfigurationProvider(
                    DEBUG_TYPES.REACT_NATIVE,
                    dymConfigProvider,
                    vscode.DebugConfigurationProviderTriggerKind.Dynamic,
                ),
            );
            EXTENSION_CONTEXT.subscriptions.push(
                vscode.debug.registerDebugConfigurationProvider(
                    DEBUG_TYPES.REACT_NATIVE_DIRECT,
                    dymConfigProvider,
                    vscode.DebugConfigurationProviderTriggerKind.Dynamic,
                ),
            );

            EXTENSION_CONTEXT.subscriptions.push(
                vscode.languages.registerCompletionItemProvider(
                    { language: JsonLanguages.json },
                    completionItemProviderInst,
                ),
            );
            EXTENSION_CONTEXT.subscriptions.push(
                vscode.languages.registerCompletionItemProvider(
                    { language: JsonLanguages.jsonWithComments },
                    completionItemProviderInst,
                ),
            );

            const sessionManager = new ReactNativeSessionManager();

            EXTENSION_CONTEXT.subscriptions.push(
                vscode.debug.registerDebugAdapterDescriptorFactory(
                    DEBUG_TYPES.REACT_NATIVE,
                    sessionManager,
                ),
            );
            EXTENSION_CONTEXT.subscriptions.push(
                vscode.debug.registerDebugAdapterDescriptorFactory(
                    DEBUG_TYPES.REACT_NATIVE_DIRECT,
                    sessionManager,
                ),
            );

            EXTENSION_CONTEXT.subscriptions.push(sessionManager);

            EXTENSION_CONTEXT.subscriptions.push(
                DebugSessionBase.onDidTerminateRootDebugSession(terminateEvent => {
                    sessionManager.terminate(terminateEvent);
                }),
            );

            const activateExtensionEvent = TelemetryHelper.createTelemetryEvent("activate");
            Telemetry.send(activateExtensionEvent);
            const promises: Promise<void>[] = [];
            if (workspaceFolders) {
                outputChannelLogger.debug(`Projects found: ${workspaceFolders.length}`);
                workspaceFolders.forEach((folder: vscode.WorkspaceFolder) => {
                    promises.push(onFolderAdded(folder));
                });
            } else {
                outputChannelLogger.warning("Could not find workspace while activating");
                TelemetryHelper.sendErrorEvent(
                    "ActivateCouldNotFindWorkspace",
                    ErrorHelper.getInternalError(InternalErrorCode.CouldNotFindWorkspace),
                );
            }

            await Promise.all(promises);
            registerReactNativeCommandPaletteCommands();
            registerReactNativeSpecialCommands();
        },
        extProps,
    );
}