replace jest with ava

node_modules/concordance/package.json

@@ -0,0 +1,64 @@
+{
+  "name": "concordance",
+  "version": "4.0.0",
+  "description": "Compare, format, diff and serialize any JavaScript value",
+  "main": "index.js",
+  "files": [
+    "lib",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">=6.12.3 <7 || >=8.9.4 <9 || >=10.0.0"
+  },
+  "scripts": {
+    "lint": "as-i-preach",
+    "test": "npm run -s lint && nyc ava"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/concordancejs/concordance.git"
+  },
+  "author": "Mark Wubben (https://novemberborn.net/)",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/concordancejs/concordance/issues"
+  },
+  "homepage": "https://github.com/concordancejs/concordance#readme",
+  "dependencies": {
+    "date-time": "^2.1.0",
+    "esutils": "^2.0.2",
+    "fast-diff": "^1.1.2",
+    "js-string-escape": "^1.0.1",
+    "lodash.clonedeep": "^4.5.0",
+    "lodash.flattendeep": "^4.4.0",
+    "lodash.islength": "^4.0.1",
+    "lodash.merge": "^4.6.1",
+    "md5-hex": "^2.0.0",
+    "semver": "^5.5.1",
+    "well-known-symbols": "^2.0.0"
+  },
+  "devDependencies": {
+    "@novemberborn/as-i-preach": "^10.0.1",
+    "ava": "1.0.0-beta.8",
+    "benchmark": "^2.1.3",
+    "chalk": "^2.4.1",
+    "codecov": "^3.1.0",
+    "lodash.isequal": "^4.5.0",
+    "nyc": "^13.0.1",
+    "pretty-format": "^23.6.0"
+  },
+  "as-i-preach": {
+    "allowDevDependencies": [
+      "perf/**/*.js",
+      "test/**/*.js"
+    ]
+  },
+  "nyc": {
+    "reporter": [
+      "html",
+      "lcov",
+      "text"
+    ]
+  },
+  "standard-engine": "@novemberborn/as-i-preach"
+}