Started to implement server

vendor/deno.land/std@0.191.0/io/string_reader.ts

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+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+// This module is browser compatible.
+
+import { Buffer } from "./buffer.ts";
+
+/**
+ * Reader utility for strings.
+ *
+ * @example
+ * ```ts
+ * import { StringReader } from "https://deno.land/std@$STD_VERSION/io/string_reader.ts";
+ *
+ * const data = new Uint8Array(6);
+ * const r = new StringReader("abcdef");
+ * const res0 = await r.read(data);
+ * const res1 = await r.read(new Uint8Array(6));
+ *
+ * // Number of bytes read
+ * console.log(res0); // 6
+ * console.log(res1); // null, no byte left to read. EOL
+ *
+ * // text
+ *
+ * console.log(new TextDecoder().decode(data)); // abcdef
+ * ```
+ *
+ * **Output:**
+ *
+ * ```text
+ * 6
+ * null
+ * abcdef
+ * ```
+ */
+export class StringReader extends Buffer {
+  constructor(s: string) {
+    super(new TextEncoder().encode(s).buffer);
+  }
+}