Started to implement server

tests/utils.ts

@@ -0,0 +1,56 @@
+
+
+export function* randomNumbers(seed: number, max: number) : Generator<number> {
+    const a = 48271;
+    const m =  2147483647;
+    max = Math.floor(max);
+    while (true) {
+        seed = (a * seed) % m; 
+        yield seed % max;
+    }
+}
+
+export function range(min: number, max: number): number[]{
+    const ret = []
+    for(let i = min; i < max; i ++){
+        ret.push(i);
+    }
+    return ret;
+}
+
+export function generateLargeText(seed: number, size: number): string {
+    const words = [
+      "Norway",
+      "Germany",
+      "Ecuador",
+      "Chile",
+      "Colombia",
+      "Sri Lanka",
+      "Guinea",
+      "United Kingdom",
+      "Egypt",
+      "Palau",
+      "Latvia",
+      "Congo, Democratic Republic of the",
+      "Malawi",
+      "Senegal",
+      "Trinidad and Tobago",
+      "Guatemala",
+      "Chad",
+      "New Zealand",
+      "Malaysia",
+      "Lithuania",
+      "Taiwan",
+      "Solomon Islands",
+      "Grenada",
+      "Hungary",
+      "Korea, South",
+    ];
+    let ret: string[] = [];
+    for (let i = 0; i < size; i++) {
+      seed = (seed * 4931 + 2753) % words.length;
+      ret.push(words[seed]);
+    }
+    return ret.join(" ");
+  }
+