Fix lint errors

bin/md2gslides.js

@@ -19,7 +19,6 @@
 require('babel-polyfill');
 
 const Promise = require('promise');
-const jsonfile = require('jsonfile');
 const fs = require('fs');
 const path = require('path');
 const ArgumentParser = require('argparse').ArgumentParser;
@@ -159,7 +158,7 @@ function buildSlideGenerator(oauth2Client) {
 
 function eraseIfNeeded(slideGenerator) {
     if (args.erase || !args.id) {
-        return slideGenerator.erase().then(function() { return slideGenerator });
+        return slideGenerator.erase().then(function() { return slideGenerator; });
     } else {
         return Promise.resolve(slideGenerator);
     }

src/extract_slides.js

@@ -197,31 +197,31 @@ markdownTokenRules['inline'] = function(token, env) {
 markdownTokenRules['html_inline'] = function(token, env) {
     const fragment = parse5.parseFragment(token.content, env.inlineHtmlContext);
     if(fragment.childNodes.length) {
-        const style = {}
+        const style = {};
         env.inlineHtmlContext = fragment.childNodes[0];
         const node = fragment.childNodes[0];
         switch (node.nodeName) {
-            case 'strong':
-            case 'b':
-                style.bold = true;
-                break;
-            case 'em':
-            case 'i':
-                style.italic = true;
-                break;
-            case 'code':
-                style.fontFamily = 'Courier New';
-                break;
-            case 'sub':
-                style.baselineOffset = 'SUBSCRIPT';
-                break;
-            case 'sup':
-                style.baselineOffset = 'SUPERSCRIPT';
-                break;
-            case 'span':
-                break;
-            default:
-                throw new Error('Unsupported inline HTML element: ' + node.nodeName);
+        case 'strong':
+        case 'b':
+            style.bold = true;
+            break;
+        case 'em':
+        case 'i':
+            style.italic = true;
+            break;
+        case 'code':
+            style.fontFamily = 'Courier New';
+            break;
+        case 'sub':
+            style.baselineOffset = 'SUBSCRIPT';
+            break;
+        case 'sup':
+            style.baselineOffset = 'SUPERSCRIPT';
+            break;
+        case 'span':
+            break;
+        default:
+            throw new Error('Unsupported inline HTML element: ' + node.nodeName);
         }
         for(let attr of node.attrs) {
             if (attr.name == 'style') {
@@ -231,7 +231,7 @@ markdownTokenRules['html_inline'] = function(token, env) {
                 break;
             }
         }
-        startStyle(style, env)
+        startStyle(style, env);
     } else {
         endStyle(env);
     }

src/slide_generator.js

@@ -108,17 +108,17 @@ class SlideGenerator {
             randomize: true,
         };
         const probe = function(image) {
-            return promiseRetry((retry, number) => {
+            return promiseRetry((retry) => {
                 return probeImageSize({ url: image.url, timeout: 5000 })
                     .then(size => {
                         image.width = size.width;
                         image.height = size.height;
                     }).catch(err => {
-                        if (err.code == ECONNRESET || err.code == ETIMEDOUT) {
+                        if (err.code == 'ECONNRESET' || err.code == 'ETIMEDOUT') {
                             retry(err);
                         }
                         throw err;
-                    })
+                    });
             }, retryOptions);
         };
         const promises = [];