Decode Blurhash pixels in a WebWorker

src/components/images/blurhash.worker.ts

@@ -0,0 +1,25 @@
+import { decode } from 'blurhash';
+import { expose } from 'comlink';
+
+/**
+ * Decodes blurhash outside the main thread, in a web worker
+ *
+ * @param {string} hash - Hash to decode.
+ * @param {number} width - Width of the decoded pixel array
+ * @param {number} height - Height of the decoded pixel array.
+ * @param {number} punch - Contrast of the decoded pixels
+ * @returns {Uint8ClampedArray} - Returns the decoded pixels in the proxied response by Comlink
+ */
+function getPixels({
+    hash,
+    width,
+    height
+}): Uint8ClampedArray {
+    try {
+        return decode(hash, width, height);
+    } catch {
+        throw new TypeError(`Blurhash ${hash} is not valid`);
+    }
+}
+
+expose(getPixels);