update packages

 eslint-plugin-node  ^7.0.1  →  ^8.0.0
 @types/chai   ^4.1.4  →    ^4.1.7
 @types/node  ^10.9.4  →  ^10.12.9
 chai          ^4.1.2  →    ^4.2.0
 eslint        ^5.5.0  →    ^5.9.0
 typescript    ^3.0.3  →    ^3.1.6

package.json

@@ -31,15 +31,15 @@
     "tslib": "^1.9.3"
   },
   "devDependencies": {
-    "@types/chai": "^4.1.4",
+    "@types/chai": "^4.1.7",
     "@types/mocha": "^5.2.5",
-    "@types/node": "^10.9.4",
-    "chai": "^4.1.2",
+    "@types/node": "^10.12.9",
+    "chai": "^4.2.0",
     "coveralls": "^3.0.2",
-    "eslint": "^5.5.0",
+    "eslint": "^5.9.0",
     "eslint-config-standard": "^12.0.0",
     "eslint-plugin-import": "^2.14.0",
-    "eslint-plugin-node": "^7.0.1",
+    "eslint-plugin-node": "^8.0.0",
     "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-react": "^7.11.1",
     "eslint-plugin-standard": "^4.0.0",
@@ -51,7 +51,7 @@
     "tslint": "^5.11.0",
     "tslint-config-standard": "^8.0.1",
     "tslint-eslint-rules": "^5.4.0",
-    "typescript": "^3.0.3"
+    "typescript": "^3.1.6"
   },
   "scripts": {
     "build": "tsc --pretty",