add typing to integration arrays

Author: lobsterkatie

packages/nextjs/src/index.client.ts

@@ -1,5 +1,6 @@
 import { configureScope, init as reactInit, Integrations as BrowserIntegrations } from '@sentry/react';
 import { defaultRequestInstrumentationOptions, Integrations as TracingIntegrations } from '@sentry/tracing';
+import { IntegrationClass } from '@sentry/types';
 
 import { nextRouterInstrumentation } from './performance/client';
 import { MetadataBuilder } from './utils/metadataBuilder';
@@ -10,7 +11,7 @@ export * from '@sentry/react';
 export { nextRouterInstrumentation } from './performance/client';
 
 const { BrowserTracing } = TracingIntegrations;
-export const Integrations = { ...BrowserIntegrations, BrowserTracing };
+export const Integrations: { [key: string]: IntegrationClass } = { ...BrowserIntegrations, BrowserTracing };
 
 /** Inits the Sentry NextJS SDK on the browser with the React SDK. */
 export function init(options: NextjsOptions): void {

packages/tracing/src/index.ts

@@ -1,8 +1,10 @@
+import { IntegrationClass } from '@sentry/types';
+
 import { BrowserTracing } from './browser';
 import { addExtensionMethods } from './hubextensions';
 import * as TracingIntegrations from './integrations';
 
-const Integrations = { ...TracingIntegrations, BrowserTracing };
+const Integrations: { [key: string]: IntegrationClass } = { ...TracingIntegrations, BrowserTracing };
 
 export { Integrations };
 export { Span } from './span';