replace jest with ava

node_modules/concordance/lib/getObjectKeys.js

@@ -0,0 +1,36 @@
+'use strict'
+
+function getObjectKeys (obj, excludeListItemAccessorsBelowLength) {
+  const keys = []
+  let size = 0
+
+  // Sort property names, they should never be order-sensitive
+  const nameCandidates = Object.getOwnPropertyNames(obj).sort()
+  // Comparators should verify symbols in an order-insensitive manner if
+  // possible.
+  const symbolCandidates = Object.getOwnPropertySymbols(obj)
+
+  for (let i = 0; i < nameCandidates.length; i++) {
+    const name = nameCandidates[i]
+
+    let accept = true
+    if (excludeListItemAccessorsBelowLength > 0) {
+      const index = Number(name)
+      accept = (index % 1 !== 0) || index >= excludeListItemAccessorsBelowLength
+    }
+
+    if (accept && Object.getOwnPropertyDescriptor(obj, name).enumerable) {
+      keys[size++] = name
+    }
+  }
+
+  for (let i = 0; i < symbolCandidates.length; i++) {
+    const symbol = symbolCandidates[i]
+    if (Object.getOwnPropertyDescriptor(obj, symbol).enumerable) {
+      keys[size++] = symbol
+    }
+  }
+
+  return { keys, size }
+}
+module.exports = getObjectKeys