Add linting to CI

.travis.yml

@@ -77,6 +77,8 @@ install:
 - npm install --build-from-source
 
 script:
+- npm run lint
+
 # Tests are disabled until we have tests which are suitable for CI and don't require manual interaction.
 # - npm test
 - echo "Skipping tests on CI, as they currently require manual interaction."

package.json

@@ -8,7 +8,8 @@
   "scripts": {
     "install": "prebuild-install || node-gyp rebuild",
     "prepublishOnly": "npm run validate",
-    "validate": "eslint **/*.js && npm test",
+    "lint": "eslint **/*.js",
+    "validate": "npm run lint && npm test",
     "test": "jasmine ./test/test.js",
     "prebuild": "prebuild --all --strip --verbose",
     "rebuild": "node-gyp rebuild"

test/.eslintrc

@@ -4,6 +4,9 @@
 		"es6": true,
 		"jasmine": true
 	},
+	"parserOptions": {
+		"ecmaVersion": 2018
+	},
 	"rules": {
 		"no-console": 0,
 	}