chore: minimum required Node.js version is 8.9.0 (#166)

BREAKING CHANGE: minimum required `Node.js` version is `8.9.0`

.travis.yml

@@ -16,13 +16,6 @@ matrix:
     - node_js: '12'
       script: yarn pretest
       env: CI=pretest
-    # Yarn doesn't support node@4
-    # - node_js: '4'
-    #   script: yarn test:ci
-    #   env: CI=tests 4
-    - node_js: '6'
-      script: yarn test:ci
-      env: CI=tests 6
     - node_js: '8'
       script: yarn test:ci
       env: CI=tests 8

appveyor.yml

@@ -2,9 +2,6 @@
 
 environment:
   matrix:
-    # Yarn doesn't support node@4
-    # - nodejs_version: 4
-    - nodejs_version: 6
     - nodejs_version: 8
     - nodejs_version: 10
     - nodejs_version: 12

lib/parseQuery.js

@@ -35,6 +35,7 @@ function parseQuery(query) {
       let name = arg.substr(0, idx);
       let value = decodeURIComponent(arg.substr(idx + 1));
 
+      // eslint-disable-next-line no-prototype-builtins
       if (specialValues.hasOwnProperty(value)) {
         value = specialValues[value];
       }

package.json

@@ -21,16 +21,16 @@
     "url": "https://github.com/webpack/loader-utils.git"
   },
   "engines": {
-    "node": ">=4.0.0"
+    "node": ">=8.9.0"
   },
   "devDependencies": {
-    "coveralls": "^3.0.2",
-    "eslint": "^5.11.0",
-    "eslint-plugin-node": "^8.0.0",
-    "eslint-plugin-prettier": "^3.0.0",
-    "jest": "^21.2.1",
+    "coveralls": "^3.0.9",
+    "eslint": "^6.8.0",
+    "eslint-plugin-node": "^11.0.0",
+    "eslint-plugin-prettier": "^3.1.2",
+    "jest": "^25.1.0",
     "prettier": "^1.19.1",
-    "standard-version": "^4.0.0"
+    "standard-version": "^7.1.0"
   },
   "main": "lib/index.js",
   "files": [