fix: revert eslint to version supported by Node.js v6

gajus · gajus · commit 539f4e09958d · 2019-07-16T13:02:34.000+01:00
diff --git a/package.json b/package.json
@@ -25,8 +25,8 @@
     "chai": "^4.2.0",
     "chalk": "^2.4.2",
     "coveralls": "^3.0.5",
-    "eslint": "^6.0.1",
-    "eslint-config-canonical": "^17.1.4",
+    "eslint": "^5.13.0",
+    "eslint-config-canonical": "^16.1.0",
     "flow-bin": "^0.102.0",
     "flow-copy-source": "^2.0.7",
     "gitdown": "^3.1.1",
