Add seed param to rand() template fn

package-lock.json

@@ -9696,6 +9696,11 @@
       "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
       "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw=="
     },
+    "seedrandom": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/seedrandom/-/seedrandom-3.0.1.tgz",
+      "integrity": "sha512-1/02Y/rUeU1CJBAGLebiC5Lbo5FnB22gQbIFFYTLkwvp1xdABZJH1sn4ZT1MzXmPpzv+Rf/Lu2NcsLJiK4rcDg=="
+    },
     "semver": {
       "version": "5.5.0",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",

package.json

@@ -42,6 +42,7 @@
     "passport-custom": "^1.0.5",
     "passport-oauth2": "^1.5.0",
     "reflect-metadata": "^0.1.12",
+    "seedrandom": "^3.0.1",
     "tlds": "^1.203.1",
     "tmp": "0.0.33",
     "ts-node": "^3.3.0",

src/templateFormatter.ts

@@ -1,4 +1,5 @@
 import { has, get } from "./utils";
+import seedrandom from "seedrandom";
 
 const TEMPLATE_CACHE_SIZE = 200;
 const templateCache: Map<string, ParsedTemplate> = new Map();
@@ -299,7 +300,7 @@ const baseValues = {
     if (end != null && isNaN(end)) return "";
     return arg1.slice(parseInt(start, 10), end && parseInt(end, 10));
   },
-  rand(from, to) {
+  rand(from, to, seed = null) {
     if (isNaN(from)) return 0;
 
     if (to == null) {
@@ -313,7 +314,9 @@ const baseValues = {
       [from, to] = [to, from];
     }
 
-    return Math.round(Math.random() * (to - from) + from);
+    let randValue = seed != null ? new seedrandom(seed)() : Math.random();
+
+    return Math.round(randValue * (to - from) + from);
   },
   add(...args) {
     return args.reduce((result, arg) => {