consolidate build scripts, reorganize source into src/ directory, fix favicon injection

src/shims/crypto/create-hash.js

@@ -0,0 +1,74 @@
+export function createHash(algorithm) {
+  const alg = algorithm.toUpperCase().replace("-", "");
+
+  const subtleAlg =
+    alg === "SHA256"
+      ? "SHA-256"
+      : alg === "SHA1"
+        ? "SHA-1"
+        : alg === "SHA512"
+          ? "SHA-512"
+          : alg;
+
+  let inputData = new Uint8Array(0);
+
+  return {
+    update(data) {
+      if (typeof data === "string") {
+        data = new TextEncoder().encode(data);
+      }
+
+      const merged = new Uint8Array(inputData.length + data.length);
+
+      merged.set(inputData);
+      merged.set(data, inputData.length);
+
+      inputData = merged;
+
+      return this;
+    },
+
+    digest(encoding) {
+      console.warn("[shim:crypto] createHash.digest - using placeholder");
+
+      const hash = simpleHash(inputData);
+
+      if (encoding === "hex") {
+        return hash;
+      }
+
+      if (encoding === "base64") {
+        return btoa(hash);
+      }
+
+      return hash;
+    },
+
+    async digestAsync(encoding) {
+      const hashBuffer = await crypto.subtle.digest(subtleAlg, inputData);
+      const hashArray = new Uint8Array(hashBuffer);
+
+      if (encoding === "hex") {
+        return Array.from(hashArray)
+          .map((b) => b.toString(16).padStart(2, "0"))
+          .join("");
+      }
+
+      if (encoding === "base64") {
+        return btoa(String.fromCharCode(...hashArray));
+      }
+
+      return hashArray;
+    },
+  };
+}
+
+function simpleHash(data) {
+  let hash = 0;
+
+  for (let i = 0; i < data.length; i++) {
+    hash = ((hash << 5) - hash + data[i]) | 0;
+  }
+
+  return Math.abs(hash).toString(16).padStart(8, "0");
+}