replace jest with ava

node_modules/update-notifier/package.json

@@ -0,0 +1,64 @@
+{
+  "name": "update-notifier",
+  "version": "4.1.0",
+  "description": "Update notifications for your CLI app",
+  "license": "BSD-2-Clause",
+  "repository": "yeoman/update-notifier",
+  "funding": "https://github.com/yeoman/update-notifier?sponsor=1",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "https://sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=8"
+  },
+  "scripts": {
+    "test": "xo && ava --timeout=20s -s"
+  },
+  "files": [
+    "index.js",
+    "check.js"
+  ],
+  "keywords": [
+    "npm",
+    "update",
+    "updater",
+    "notify",
+    "notifier",
+    "check",
+    "checker",
+    "cli",
+    "module",
+    "package",
+    "version"
+  ],
+  "dependencies": {
+    "boxen": "^4.2.0",
+    "chalk": "^3.0.0",
+    "configstore": "^5.0.1",
+    "has-yarn": "^2.1.0",
+    "import-lazy": "^2.1.0",
+    "is-ci": "^2.0.0",
+    "is-installed-globally": "^0.3.1",
+    "is-npm": "^4.0.0",
+    "is-yarn-global": "^0.3.0",
+    "latest-version": "^5.0.0",
+    "pupa": "^2.0.1",
+    "semver-diff": "^3.1.1",
+    "xdg-basedir": "^4.0.0"
+  },
+  "devDependencies": {
+    "ava": "^2.4.0",
+    "clear-module": "^4.0.0",
+    "fixture-stdout": "^0.2.1",
+    "mock-require": "^3.0.3",
+    "strip-ansi": "^6.0.0",
+    "xo": "^0.26.1"
+  },
+  "xo": {
+    "rules": {
+      "prefer-object-spread": 0
+    }
+  }
+}