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backend/node_modules/hono/dist/middleware/serve-static/index.js

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+// src/middleware/serve-static/index.ts
+import { COMPRESSIBLE_CONTENT_TYPE_REGEX } from "../../utils/compress.js";
+import { getMimeType } from "../../utils/mime.js";
+import { defaultJoin } from "./path.js";
+var ENCODINGS = {
+  br: ".br",
+  zstd: ".zst",
+  gzip: ".gz"
+};
+var ENCODINGS_ORDERED_KEYS = Object.keys(ENCODINGS);
+var DEFAULT_DOCUMENT = "index.html";
+var serveStatic = (options) => {
+  const root = options.root ?? "./";
+  const optionPath = options.path;
+  const join = options.join ?? defaultJoin;
+  return async (c, next) => {
+    if (c.finalized) {
+      return next();
+    }
+    let filename;
+    if (options.path) {
+      filename = options.path;
+    } else {
+      try {
+        filename = decodeURIComponent(c.req.path);
+        if (/(?:^|[\/\\])\.\.(?:$|[\/\\])/.test(filename)) {
+          throw new Error();
+        }
+      } catch {
+        await options.onNotFound?.(c.req.path, c);
+        return next();
+      }
+    }
+    let path = join(
+      root,
+      !optionPath && options.rewriteRequestPath ? options.rewriteRequestPath(filename) : filename
+    );
+    if (options.isDir && await options.isDir(path)) {
+      path = join(path, DEFAULT_DOCUMENT);
+    }
+    const getContent = options.getContent;
+    let content = await getContent(path, c);
+    if (content instanceof Response) {
+      return c.newResponse(content.body, content);
+    }
+    if (content) {
+      const mimeType = options.mimes && getMimeType(path, options.mimes) || getMimeType(path);
+      c.header("Content-Type", mimeType || "application/octet-stream");
+      if (options.precompressed && (!mimeType || COMPRESSIBLE_CONTENT_TYPE_REGEX.test(mimeType))) {
+        const acceptEncodingSet = new Set(
+          c.req.header("Accept-Encoding")?.split(",").map((encoding) => encoding.trim())
+        );
+        for (const encoding of ENCODINGS_ORDERED_KEYS) {
+          if (!acceptEncodingSet.has(encoding)) {
+            continue;
+          }
+          const compressedContent = await getContent(path + ENCODINGS[encoding], c);
+          if (compressedContent) {
+            content = compressedContent;
+            c.header("Content-Encoding", encoding);
+            c.header("Vary", "Accept-Encoding", { append: true });
+            break;
+          }
+        }
+      }
+      await options.onFound?.(path, c);
+      return c.body(content);
+    }
+    await options.onNotFound?.(path, c);
+    await next();
+    return;
+  };
+};
+export {
+  serveStatic
+};