chore(package): update dev dependencies

Author: julien-f

.eslintrc.js

@@ -1,8 +1,15 @@
 module.exports = {
-  env: { es6: true },
+  extends: [
+    // standard configuration
+    "standard",
 
-  // use standard configuration and disable rules handled by prettier
-  extends: ["standard", "prettier"],
+    // https://github.com/mysticatea/eslint-plugin-node#-rules
+    "plugin:node/recommended",
+
+    // disable rules handled by prettier
+    "prettier",
+    "prettier/standard",
+  ],
 
   rules: {
     // prefer let/const over var
@@ -13,10 +20,11 @@ module.exports = {
     // should be included in standard: https://github.com/standard/eslint-config-standard/pull/133/
     "prefer-const": "error",
 
-    // detect incorrect import/require
+    // detect incorrect import
     "node/no-extraneous-import": "error",
-    "node/no-extraneous-require": "error",
-    "node/no-missing-require": "error",
     "node/no-missing-import": "error",
+
+    // uncomment if you are using a builder like Babel
+    "node/no-unsupported-features/es-syntax": "off",
   },
 };

.travis.yml

@@ -3,7 +3,6 @@ node_js:
   - stable
   - 10
   - 8
-  - 6
 
 # Use containers.
 # http://docs.travis-ci.com/user/workers/container-based-infrastructure/