Eslint fixes for v4x (#989)

* UPDATE .eslintrc

* UPDATE lint task

* FIX lint errors

* CLEANUP

* FIX no-eq-null warning

* FIX many jsdoc warnings

* FIX jsdoc issues

* FIX jsdoc warnings

* FIX jsdoc

* FIX eqeq and no-eq-null

* ADD lint to travis

* UPDATE test env for eslint

.eslintrc

@@ -1,7 +1,10 @@
 {
   "extends": "xo-space/browser",
   "rules": {
-    "semi": [2, "never"],
+    "semi": [
+      2,
+      "never"
+    ],
     "no-return-assign": "off",
     "no-unused-expressions": "off",
     "no-new-func": "off",
@@ -10,11 +13,22 @@
     "max-params": "off",
     "no-script-url": "off",
     "camelcase": "off",
-    "no-warning-comments": "off"
+    "object-curly-spacing": "off",
+    "no-warning-comments": "off",
+    "no-negated-condition": "off",
+    "eqeqeq": "warn",
+    "no-eq-null": "warn",
+    "max-statements-per-line": "warn"
   },
   "globals": {
     "Docsify": true,
     "$docsify": true,
     "process": true
+  },
+  "env": {
+    "browser": true,
+    "amd": true,
+    "node": true,
+    "jest": true
   }
-}
+}

.travis.yml

@@ -1,3 +1,6 @@
 sudo: false
 language: node_js
 node_js: stable
+
+script:
+  - npm run lint

docs/_media/example.js

@@ -5,12 +5,12 @@ const PORT = 8080
 
 /// [demo]
 const result = fetch(`${URL}:${PORT}`)
-  .then(function(response) {
-    return response.json();
+  .then(function (response) {
+    return response.json()
+  })
+  .then(function (myJson) {
+    console.log(JSON.stringify(myJson))
   })
-  .then(function(myJson) {
-    console.log(JSON.stringify(myJson));
-  });
 /// [demo]
 
 result.then(console.log).catch(console.error)

package.json

@@ -26,7 +26,7 @@
     "serve:ssr": "cross-env SSR=1 node server",
     "dev": "run-p serve watch:*",
     "dev:ssr": "run-p serve:ssr watch:*",
-    "lint": "eslint {src,packages} --fix",
+    "lint": "eslint . --fix",
     "test": "mocha test/*/**",
     "css": "node build/css",
     "watch:css": "npm run css -- -o themes -w",
@@ -48,8 +48,8 @@
   },
   "lint-staged": {
     "*.js": [
-    "npm run lint",
-    "git add"
+      "npm run lint",
+      "git add"
     ]
   },
   "dependencies": {
@@ -98,4 +98,4 @@
   "collective": {
     "url": "https://opencollective.com/docsify"
   }
-}
+}

packages/docsify-server-renderer/index.js

@@ -21,6 +21,7 @@ function mainTpl(config) {
   if (config.repo) {
     html += tpl.corner(config.repo)
   }
+
   if (config.coverpage) {
     html += tpl.cover()
   }
@@ -154,12 +155,14 @@ export default class Renderer {
         if (!res.ok) {
           throw Error()
         }
+
         content = await res.text()
         this.lock = 0
       } else {
         content = await readFileSync(filePath, 'utf8')
         this.lock = 0
       }
+
       return content
     } catch (e) {
       this.lock = this.lock || 0

src/core/config.js

@@ -23,9 +23,9 @@ export default function () {
       ext: '.md',
       mergeNavbar: false,
       formatUpdated: '',
-      // this config for the links inside markdown
+      // This config for the links inside markdown
       externalLinkTarget: '_blank',
-      // this config for the corner 
+      // This config for the corner
       cornerExternalLinkTarget: '_blank',
       externalLinkRel: 'noopener',
       routerMode: 'hash',
@@ -55,15 +55,19 @@ export default function () {
     if (config.loadSidebar === true) {
       config.loadSidebar = '_sidebar' + config.ext
     }
+
     if (config.loadNavbar === true) {
       config.loadNavbar = '_navbar' + config.ext
     }
+
     if (config.coverpage === true) {
       config.coverpage = '_coverpage' + config.ext
     }
+
     if (config.repo === true) {
       config.repo = ''
     }
+
     if (config.name === true) {
       config.name = ''
     }

src/core/event/scroll.js

@@ -1,4 +1,4 @@
-import {isMobile} from '../util/env'
+import { isMobile } from '../util/env'
 import * as dom from '../util/dom'
 import Tweezer from 'tweezer.js'
 
@@ -12,6 +12,7 @@ function scrollTo(el) {
   if (scroller) {
     scroller.stop()
   }
+
   enableScrollEvent = false
   scroller = new Tweezer({
     start: window.pageYOffset,
@@ -30,6 +31,7 @@ function highlight(path) {
   if (!enableScrollEvent) {
     return
   }
+
   const sidebar = dom.getNode('.sidebar')
   const anchors = dom.findAll('.anchor')
   const wrap = dom.find(sidebar, '.sidebar-nav')
@@ -45,14 +47,17 @@ function highlight(path) {
       if (!last) {
         last = node
       }
+
       break
     } else {
       last = node
     }
   }
+
   if (!last) {
     return
   }
+
   const li = nav[getNavKey(decodeURIComponent(path), last.getAttribute('data-id'))]
 
   if (!li || li === active) {
@@ -88,7 +93,7 @@ export function scrollActiveSidebar(router) {
 
   const sidebar = dom.getNode('.sidebar')
   let lis = []
-  if (sidebar != null) {
+  if (sidebar !== null && sidebar !== undefined) {
     lis = dom.findAll(sidebar, 'li')
   }
 
@@ -98,10 +103,11 @@ export function scrollActiveSidebar(router) {
     if (!a) {
       continue
     }
+
     let href = a.getAttribute('href')
 
     if (href !== '/') {
-      const {query: {id}, path} = router.parse(href)
+      const { query: { id }, path } = router.parse(href)
       if (id) {
         href = getNavKey(path, id)
       }
@@ -115,6 +121,7 @@ export function scrollActiveSidebar(router) {
   if (isMobile) {
     return
   }
+
   const path = router.getCurrentPath()
   dom.off('scroll', () => highlight(path))
   dom.on('scroll', () => highlight(path))

src/core/event/sidebar.js

@@ -1,17 +1,20 @@
-import {isMobile} from '../util/env'
+import { isMobile } from '../util/env'
 import * as dom from '../util/dom'
 
 const title = dom.$.title
 /**
  * Toggle button
+ * @param {Element} el Button to be toggled
+ * @void
  */
 export function btn(el) {
   const toggle = _ => dom.body.classList.toggle('close')
 
   el = dom.getNode(el)
-  if (el == null) {
+  if (el === null || el === undefined) {
     return
   }
+
   dom.on(el, 'click', e => {
     e.stopPropagation()
     toggle()
@@ -27,10 +30,11 @@ export function btn(el) {
 
 export function collapse(el) {
   el = dom.getNode(el)
-  if (el == null) {
+  if (el === null || el === undefined) {
     return
   }
-  dom.on(el, 'click', ({target}) => {
+
+  dom.on(el, 'click', ({ target }) => {
     if (
       target.nodeName === 'A' &&
       target.nextSibling &&
@@ -46,6 +50,7 @@ export function sticky() {
   if (!cover) {
     return
   }
+
   const coverHeight = cover.getBoundingClientRect().height
 
   if (window.pageYOffset >= coverHeight || cover.classList.contains('hidden')) {
@@ -57,18 +62,19 @@ export function sticky() {
 
 /**
  * Get and active link
- * @param  {object} router
- * @param  {string|element}  el
- * @param  {Boolean} isParent   acitve parent
- * @param  {Boolean} autoTitle  auto set title
- * @return {element}
+ * @param  {Object} router Router
+ * @param  {String|Element} el Target element
+ * @param  {Boolean} isParent Active parent
+ * @param  {Boolean} autoTitle Automatically set title
+ * @return {Element} Active element
  */
 export function getAndActive(router, el, isParent, autoTitle) {
   el = dom.getNode(el)
   let links = []
-  if (el != null) {
+  if (el !== null && el !== undefined) {
     links = dom.findAll(el, 'a')
   }
+
   const hash = decodeURI(router.toURL(router.getCurrentPath()))
   let target
 

src/core/fetch/ajax.js

@@ -1,23 +1,25 @@
 import progressbar from '../render/progressbar'
-import {noop, hasOwn} from '../util/core'
+import { noop, hasOwn } from '../util/core'
 
 const cache = {}
 
 /**
- * Simple ajax get
- * @param {string} url
- * @param {boolean} [hasBar=false] has progress bar
- * @return { then(resolve, reject), abort }
+ * Ajax GET implmentation
+ * @param {string} url Resource URL
+ * @param {boolean} [hasBar=false] Has progress bar
+ * @param {String[]} headers Array of headers
+ * @return {Promise} Promise response
  */
 export function get(url, hasBar = false, headers = {}) {
   const xhr = new XMLHttpRequest()
   const on = function () {
     xhr.addEventListener.apply(xhr, arguments)
   }
+
   const cached = cache[url]
 
   if (cached) {
-    return {then: cb => cb(cached.content, cached.opt), abort: noop}
+    return { then: cb => cb(cached.content, cached.opt), abort: noop }
   }
 
   xhr.open('GET', url)
@@ -26,6 +28,7 @@ export function get(url, hasBar = false, headers = {}) {
       xhr.setRequestHeader(i, headers[i])
     }
   }
+
   xhr.send()
 
   return {
@@ -47,7 +50,7 @@ export function get(url, hasBar = false, headers = {}) {
       }
 
       on('error', error)
-      on('load', ({target}) => {
+      on('load', ({ target }) => {
         if (target.status >= 400) {
           error(target)
         } else {