.babelrc

@@ -0,0 +1,7 @@
+{
+  "presets": ["env"],
+  "ignore": [
+    "index.js",
+    "lib/*.js"
+  ]
+}

.eslintignore

@@ -0,0 +1,3 @@
+coverage/**
+examples/**
+release.js

.eslintrc

@@ -0,0 +1,22 @@
+{
+  "extends": [
+    "eslint:recommended",
+    "prettier"
+  ],
+  "plugins": [
+    "prettier"
+  ],
+  "parserOptions": {
+    "ecmaVersion": 2018
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true
+  },
+  "rules": {
+    "no-var": "error",
+    "prefer-const": "error",
+    "prettier/prettier": "error"
+  }
+}

.gitignore

@@ -1,5 +1,6 @@
 # test related
 coverage/
+.nyc_output/
 testing
 testapp
 
@@ -19,3 +20,4 @@ npm-debug.log
 README.html
 *.tgz
 docs/
+.vscode/

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "tabWidth": 2,
+  "printWidth": 140
+}

.travis.yml

@@ -1,18 +1,29 @@
 language: node_js
+
+sudo: false
+
 node_js:
-  - "0.10"
-  - "0.12"
-  - "iojs"
-  - "4"
-  - "5"
+  - "13"
+  - "12"
+  - "11"
+  - "10"
+  - "9"
+  - "8"
 
-services:
-  - mongodb
+env:
+  - MONGODB_VERSION="2.6.12"
+  - MONGODB_VERSION="3.0.15"
+  - MONGODB_VERSION="3.2.16"
+  - MONGODB_VERSION="3.4.7"
+  - MONGODB_VERSION="3.6.2"
+  - MONGODB_VERSION="4.1.6"
 
 before_script:
-  - npm install -g istanbul
-  - npm install coveralls
-  - npm install mocha-lcov-reporter
+  - wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-${MONGODB_VERSION}.tgz -O /tmp/mongodb.tgz
+  - tar -xvf /tmp/mongodb.tgz
+  - mkdir /tmp/data
+  - ${PWD}/mongodb-linux-x86_64-${MONGODB_VERSION}/bin/mongod --dbpath /tmp/data &> /dev/null &
+  - ${PWD}/mongodb-linux-x86_64-${MONGODB_VERSION}/bin/mongod --version
+  - until nc -z localhost 27017; do echo Waiting for MongoDB; sleep 1; done
 
-after_script:
-  - NODE_ENV=test istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- -R spec && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage
+after_success: npm run coveralls