(chore) fix tiny style issues, add linting npm task

- fixes tiny style issues
- adds `npm run lint` for linting the main library source
  (not languages which are still much messier)

Author: joshgoebel

package.json

@@ -24,6 +24,7 @@
   "types": "./types/index.d.ts",
   "scripts": {
     "mocha": "mocha",
+    "lint": "eslint -c .eslintrc.js src/*.js src/lib/*.js",
     "build_and_test": "npm run build && npm run test",
     "build": "node ./tools/build.js -t node",
     "build-cdn": "node ./tools/build.js -t cdn",

src/highlight.js

@@ -684,7 +684,7 @@ const HLJS = function(hljs) {
       language: result.language,
       // TODO: remove with version 11.0
       re: result.relevance,
-      relavance: result.relevance,
+      relavance: result.relevance
     };
     if (result.second_best) {
       element.second_best = {

src/lib/html_renderer.js

@@ -84,5 +84,4 @@ export default class HTMLRenderer {
   span(className) {
     this.buffer += `<span class="${className}">`;
   }
-
 }