replace jest with ava

node_modules/mem/package.json

@@ -0,0 +1,46 @@
+{
+  "name": "mem",
+  "version": "6.1.0",
+  "description": "Memoize functions - An optimization used to speed up consecutive function calls by caching the result of calls with identical input",
+  "license": "MIT",
+  "repository": "sindresorhus/mem",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=8"
+  },
+  "scripts": {
+    "test": "xo && ava && tsd"
+  },
+  "files": [
+    "index.js",
+    "index.d.ts"
+  ],
+  "keywords": [
+    "memoize",
+    "function",
+    "mem",
+    "memoization",
+    "cache",
+    "caching",
+    "optimize",
+    "performance",
+    "ttl",
+    "expire",
+    "promise"
+  ],
+  "dependencies": {
+    "map-age-cleaner": "^0.1.3",
+    "mimic-fn": "^3.0.0"
+  },
+  "devDependencies": {
+    "ava": "^2.4.0",
+    "delay": "^4.1.0",
+    "serialize-javascript": "^2.1.0",
+    "tsd": "^0.11.0",
+    "xo": "^0.25.3"
+  }
+}