chore: use type instead of interface per lint rule

Author: NathanDrake2406

packages/vinext/src/build/precompress.ts

@@ -39,12 +39,12 @@ const MIN_SIZE = 1024;
 /** Max files to compress concurrently (avoids memory spikes). */
 const CONCURRENCY = Math.min(os.availableParallelism(), 16);
 
-export interface PrecompressResult {
+export type PrecompressResult = {
   filesCompressed: number;
   totalOriginalBytes: number;
   /** Sum of brotli-compressed sizes (used for compression ratio reporting). */
   totalCompressedBytes: number;
-}
+};
 
 /**
  * Walk a directory recursively, yielding relative paths for regular files.

packages/vinext/src/server/prod-server.ts

@@ -517,10 +517,10 @@ async function tryServeStatic(
   return true;
 }
 
-interface ResolvedFile {
+type ResolvedFile = {
   path: string;
   size: number;
-}
+};
 
 /**
  * Resolve the actual file to serve, trying extension-less HTML fallbacks.

packages/vinext/src/server/static-file-cache.ts

@@ -46,16 +46,16 @@ export const CONTENT_TYPES: Record<string, string> = {
 const BUFFER_THRESHOLD = 64 * 1024;
 
 /** A servable file variant with pre-computed response headers. */
-export interface FileVariant {
+export type FileVariant = {
   /** Absolute file path (used for streaming large files). */
   path: string;
   /** Pre-computed response headers. */
   headers: Record<string, string>;
   /** In-memory buffer for small files (below BUFFER_THRESHOLD). */
   buffer?: Buffer;
-}
+};
 
-export interface StaticFileEntry {
+export type StaticFileEntry = {
   /** Weak ETag for conditional request matching. */
   etag: string;
   /** Pre-computed headers for 304 Not Modified response. */
@@ -68,7 +68,7 @@ export interface StaticFileEntry {
   gz?: FileVariant;
   /** Zstandard precompressed variant, if .zst file exists. */
   zst?: FileVariant;
-}
+};
 
 /**
  * In-memory cache of static file metadata, populated once at server startup.

tests/serve-static.test.ts

@@ -34,12 +34,12 @@ function mockReq(
   return { headers, method } as unknown as IncomingMessage;
 }
 
-interface CapturedResponse {
+type CapturedResponse = {
   status: number;
   headers: Record<string, string | string[]>;
   body: Buffer;
   ended: Promise<void>;
-}
+};
 
 /**
  * Create a mock response that captures writeHead + streamed/ended body data.