added test for nodejs

test.js

@@ -1,15 +1,47 @@
 const Numesis = require('./mod')
-const n = new Numesis();
-let ts = Date.now();
-let de = [];
-let dp = [];
-for(let i = 999999999; i < 1000001999; i++){
-    const e = n.e(i);
-    if (de.includes(e)) dp.push(e);
-    de.push(e);
+
+async function test(s) {
+    const n = new Numesis();
+    return new Promise((resolve)=>{
+        let ts = Date.now();
+        let te = Date.now();
+        let de = [];
+        var stop = false;
+        for(let i = 0; !stop; i++){
+            de.push(n.e(i));
+            te = Date.now();
+            if (te - ts >= s * 1000) {
+                stop = true;
+                return resolve({
+                    start: ts,
+                    end: te,
+                    id: de
+                });
+            }
+        }
+    });
 }
-let te = Date.now();
-console.log(`\n===========================================`);
-console.log("Generated ID's \t\t\t:", de.length);
-console.log("Duplicated ID's \t\t:", dp.length);
-console.log("Elapsed time \t\t\t:", (te - ts) / 1000, "s");
+async function average(s) {
+    const id = [];
+    const dup = [];
+    for(let i = 0; i < s; i++){
+        await test(1).then(({ id: e  })=>{
+            id.push(e.length);
+            dup.push(e.length - new Set(e).size);
+        });
+    }
+    const avg = id.reduce((a, b)=>a + b, 0) / id.length;
+    const avgDup = dup.reduce((a, b)=>a + b, 0) / dup.length;
+    console.log(`\n=====================================================`);
+    console.log("Average ID's:", ~~avg, "/s");
+    console.log(`Average duplicated ID's: ${~~avgDup}/s`);
+    console.log(`Elapsed time: ${s}s`);
+}
+test(1).then((e)=>{
+    console.log(`\n=====================================================`);
+    console.log("Average Generated ID's \t\t\t:", e?.id?.length);
+    console.log("Average Duplicated ID's \t\t:", e?.id?.length - new Set(e?.id).size);
+    console.log("Elapsed time \t\t\t\t:", (e?.end - e?.start) / 1000, "s");
+    return 0;
+});
+average(10);