build: add fast check dev deps for property-based testing

Author: TomerAberbach

package-lock.json

@@ -35,7 +35,9 @@
     "README.md"
   ],
   "ava": {
-    "extensions": ["ts"],
+    "extensions": [
+      "ts"
+    ],
     "require": [
       "ts-node/register"
     ]
@@ -56,6 +58,8 @@
     "@rollup/plugin-node-resolve": "^7.1.3",
     "@wessberg/rollup-plugin-ts": "^1.2.24",
     "ava": "^3.8.2",
+    "ava-fast-check": "^1.1.2",
+    "fast-check": "^1.24.2",
     "rollup": "^2.7.6",
     "trash": "^6.1.1",
     "ts-node": "^8.10.1",