add browser dist

src/lib/hash-compute/HashComputerWorker.ts

@@ -0,0 +1,29 @@
+import {FileIDComputerWorker} from "../file-id/FileIDComputerWorker";
+import {CID_ALGORITHM_NAMES, ComputeInterface, MultiHashData} from "./MultiHashData";
+
+export class HashComputerWorker implements ComputeInterface {
+    private fileIDComputer: FileIDComputerWorker;
+
+    constructor(private targetHash: CID_ALGORITHM_NAMES[], workerPath?: string) {
+        this.fileIDComputer = new FileIDComputerWorker(workerPath);
+    }
+
+    async computeMissingHash(filePath: string, metadata: MultiHashData): Promise<void> {
+        // Dynamically determine which hashes are needed
+        const neededHashes = this.targetHash.filter(hashName => !metadata[hashName]);
+
+        // If all hashes are already computed, skip the processing
+        if (neededHashes.length === 0) {
+            return;
+        }
+
+        // Compute only the needed CIDs
+        const cids = await this.fileIDComputer.computeCIDs(filePath, neededHashes);
+
+        // Map the computed CIDs back to their respective metadata properties
+        for (const [index, cid] of cids.entries()) {
+            const hashType = neededHashes[index];
+            metadata[hashType] = cid;
+        }
+    }
+}