General Upgrade, NEW: WebServers, Better Docs

src/sdk/utils.ts

@@ -0,0 +1,28 @@
+export function utf8Encode(text: string): Uint8Array {
+  if (typeof TextEncoder !== "undefined") return new TextEncoder().encode(text);
+  if (typeof Buffer !== "undefined") return new Uint8Array(Buffer.from(text, "utf-8"));
+  const bytes = new Uint8Array(text.length * 4);
+  let len = 0;
+  for (let i = 0; i < text.length; i += 1) {
+    const code = text.codePointAt(i) as number;
+    if (code < 0x80) bytes[len++] = code;
+    else if (code < 0x800) { bytes[len++] = 0xc0 | (code >> 6); bytes[len++] = 0x80 | (code & 0x3f); }
+    else if (code < 0x10000) { bytes[len++] = 0xe0 | (code >> 12); bytes[len++] = 0x80 | ((code >> 6) & 0x3f); bytes[len++] = 0x80 | (code & 0x3f); }
+    else { bytes[len++] = 0xf0 | (code >> 18); bytes[len++] = 0x80 | ((code >> 12) & 0x3f); bytes[len++] = 0x80 | ((code >> 6) & 0x3f); bytes[len++] = 0x80 | (code & 0x3f); i += 1; }
+  }
+  return bytes.subarray(0, len);
+}
+
+export function writeU64BE(value: bigint): Uint8Array {
+  if (value < 0n || value > 0xffff_ffff_ffff_ffffn) throw new Error("u64 value out of range");
+  const out = new Uint8Array(8);
+  for (let i = 7; i >= 0; i -= 1) { out[i] = Number(value & 0xffn); value >>= 8n; }
+  return out;
+}
+
+export function concatBytes(parts: Uint8Array[]): Uint8Array {
+  const out = new Uint8Array(parts.reduce((sum, part) => sum + part.length, 0));
+  let offset = 0;
+  for (const part of parts) { out.set(part, offset); offset += part.length; }
+  return out;
+}