初始化项目

packages/shared/src/index.js

@@ -0,0 +1,49 @@
+export function normalizeUrl(input) {
+  try {
+    const url = new URL(input);
+    url.hash = "";
+
+    url.protocol = url.protocol.toLowerCase();
+    url.hostname = url.hostname.toLowerCase();
+
+    // Remove default ports
+    if ((url.protocol === "http:" && url.port === "80") || (url.protocol === "https:" && url.port === "443")) {
+      url.port = "";
+    }
+
+    // Trim trailing slash on pathname (but keep root '/')
+    if (url.pathname.length > 1 && url.pathname.endsWith("/")) {
+      url.pathname = url.pathname.slice(0, -1);
+    }
+
+    // Drop common tracking params
+    const trackingPrefixes = ["utm_", "spm", "gclid", "fbclid"];
+    for (const key of [...url.searchParams.keys()]) {
+      const lowerKey = key.toLowerCase();
+      if (trackingPrefixes.some((p) => lowerKey.startsWith(p))) {
+        url.searchParams.delete(key);
+      }
+    }
+
+    // Sort params for stable output
+    const sorted = [...url.searchParams.entries()].sort(([a], [b]) => a.localeCompare(b));
+    url.search = "";
+    for (const [k, v] of sorted) url.searchParams.append(k, v);
+
+    return url.toString();
+  } catch {
+    return input;
+  }
+}
+
+export function computeUrlHash(normalizedUrl) {
+  // Lightweight hash (non-crypto) for dedupe key; server may replace with crypto later.
+  let hash = 2166136261;
+  for (let i = 0; i < normalizedUrl.length; i++) {
+    hash ^= normalizedUrl.charCodeAt(i);
+    hash = Math.imul(hash, 16777619);
+  }
+  return (hash >>> 0).toString(16);
+}
+
+export { parseNetscapeBookmarkHtml } from "./bookmarkHtml.js";