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node_modules/astro/dist/assets/utils/node/emitAsset.js

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+import fs from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath, pathToFileURL } from "node:url";
+import { generateContentHash } from "../../../core/encryption.js";
+import { prependForwardSlash, slash } from "../../../core/path.js";
+import { imageMetadata } from "../metadata.js";
+const svgContentCache = /* @__PURE__ */ new WeakMap();
+const keyRegistry = /* @__PURE__ */ new Map();
+function keyFor(hash) {
+  let key = keyRegistry.get(hash);
+  if (!key) {
+    key = { hash };
+    keyRegistry.set(hash, key);
+  }
+  return key;
+}
+async function handleSvgDeduplication(fileData, filename, fileEmitter) {
+  const contentHash = await generateContentHash(fileData.buffer);
+  const key = keyFor(contentHash);
+  const existing = svgContentCache.get(key);
+  if (existing) {
+    const handle = fileEmitter({
+      name: existing.filename,
+      source: fileData,
+      type: "asset"
+    });
+    return handle;
+  } else {
+    const handle = fileEmitter({
+      name: filename,
+      source: fileData,
+      type: "asset"
+    });
+    svgContentCache.set(key, { handle, filename });
+    return handle;
+  }
+}
+async function emitESMImage(id, _watchMode, _experimentalSvgEnabled, fileEmitter) {
+  if (!id) {
+    return void 0;
+  }
+  const url = pathToFileURL(id);
+  let fileData;
+  try {
+    fileData = await fs.readFile(url);
+  } catch {
+    return void 0;
+  }
+  const fileMetadata = await imageMetadata(fileData, id);
+  const emittedImage = {
+    src: "",
+    ...fileMetadata
+  };
+  Object.defineProperty(emittedImage, "fsPath", {
+    enumerable: false,
+    writable: false,
+    value: id
+  });
+  let isBuild = typeof fileEmitter === "function";
+  if (isBuild) {
+    const pathname = decodeURI(url.pathname);
+    const filename = path.basename(pathname, path.extname(pathname) + `.${fileMetadata.format}`);
+    try {
+      let handle;
+      if (fileMetadata.format === "svg") {
+        handle = await handleSvgDeduplication(fileData, filename, fileEmitter);
+      } else {
+        handle = fileEmitter({
+          name: filename,
+          source: fileData,
+          type: "asset"
+        });
+      }
+      emittedImage.src = `__ASTRO_ASSET_IMAGE__${handle}__`;
+    } catch {
+      isBuild = false;
+    }
+  }
+  if (!isBuild) {
+    url.searchParams.append("origWidth", fileMetadata.width.toString());
+    url.searchParams.append("origHeight", fileMetadata.height.toString());
+    url.searchParams.append("origFormat", fileMetadata.format);
+    emittedImage.src = `/@fs` + prependForwardSlash(fileURLToNormalizedPath(url));
+  }
+  return emittedImage;
+}
+async function emitImageMetadata(id, fileEmitter) {
+  if (!id) {
+    return void 0;
+  }
+  const url = pathToFileURL(id);
+  let fileData;
+  try {
+    fileData = await fs.readFile(url);
+  } catch {
+    return void 0;
+  }
+  const fileMetadata = await imageMetadata(fileData, id);
+  const emittedImage = {
+    src: "",
+    ...fileMetadata
+  };
+  Object.defineProperty(emittedImage, "fsPath", {
+    enumerable: false,
+    writable: false,
+    value: id
+  });
+  let isBuild = typeof fileEmitter === "function";
+  if (isBuild) {
+    const pathname = decodeURI(url.pathname);
+    const filename = path.basename(pathname, path.extname(pathname) + `.${fileMetadata.format}`);
+    try {
+      let handle;
+      if (fileMetadata.format === "svg") {
+        handle = await handleSvgDeduplication(fileData, filename, fileEmitter);
+      } else {
+        handle = fileEmitter({
+          name: filename,
+          source: fileData,
+          type: "asset"
+        });
+      }
+      emittedImage.src = `__ASTRO_ASSET_IMAGE__${handle}__`;
+    } catch {
+      isBuild = false;
+    }
+  }
+  if (!isBuild) {
+    url.searchParams.append("origWidth", fileMetadata.width.toString());
+    url.searchParams.append("origHeight", fileMetadata.height.toString());
+    url.searchParams.append("origFormat", fileMetadata.format);
+    emittedImage.src = `/@fs` + prependForwardSlash(fileURLToNormalizedPath(url));
+  }
+  return emittedImage;
+}
+function fileURLToNormalizedPath(filePath) {
+  return slash(fileURLToPath(filePath) + filePath.search).replace(/\\/g, "/");
+}
+export {
+  emitESMImage,
+  emitImageMetadata
+};