fix getting of distDir value

Author: lobsterkatie

packages/nextjs/src/index.server.ts

@@ -46,26 +46,19 @@ function sdkAlreadyInitialized(): boolean {
   return !!hub.getClient();
 }
 
-// eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
-// console.log((global as any).__rewriteFramesDistDir__);
-// debugger;
-
-// webpack will replace this placeholder at build time
-
-// FIXME
-// eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
-const SOURCEMAP_FILENAME_REGEX = new RegExp(escapeStringForRegex((global as any).__rewriteFramesDistDir__));
-
-const defaultRewriteFramesIntegration = new RewriteFrames({
-  iteratee: frame => {
-    frame.filename = frame.filename?.replace(SOURCEMAP_FILENAME_REGEX, 'app:///_next/');
-    return frame;
-  },
-});
-
-const defaultHttpTracingIntegration = new Integrations.Http({ tracing: true });
-
 function addServerIntegrations(options: NextjsOptions): void {
+  // This value is injected at build time, based on the output directory specified in the build config
+  const buildDir = (global as typeof global & { __rewriteFramesDistDir__: string }).__rewriteFramesDistDir__;
+  const SOURCEMAP_FILENAME_REGEX = new RegExp(escapeStringForRegex(buildDir));
+
+  const defaultRewriteFramesIntegration = new RewriteFrames({
+    iteratee: frame => {
+      frame.filename = frame.filename?.replace(SOURCEMAP_FILENAME_REGEX, 'app:///_next');
+      return frame;
+    },
+  });
+  const defaultHttpTracingIntegration = new Integrations.Http({ tracing: true });
+
   if (options.integrations) {
     options.integrations = addIntegration(defaultRewriteFramesIntegration, options.integrations);
   } else {