fixed eslint warnings

browser/lib/Mutable.js

@@ -38,15 +38,15 @@ class MutableMap {
   }
 
   map (cb) {
-    let result = []
-    for (let [key, value] of this._map) {
+    const result = []
+    for (const [key, value] of this._map) {
       result.push(cb(value, key))
     }
     return result
   }
 
   toJS () {
-    let result = {}
+    const result = {}
     for (let [key, value] of this._map) {
       if (value instanceof MutableSet || value instanceof MutableMap) {
         value = value.toJS()
@@ -85,7 +85,7 @@ class MutableSet {
   }
 
   map (cb) {
-    let result = []
+    const result = []
     this._set.forEach(function (value, key) {
       result.push(cb(value, key))
     })

browser/lib/findNoteTitle.js

@@ -1,11 +1,11 @@
 export function findNoteTitle (value) {
-  let splitted = value.split('\n')
+  const splitted = value.split('\n')
   let title = null
   let isInsideCodeBlock = false
 
   splitted.some((line, index) => {
-    let trimmedLine = line.trim()
-    let trimmedNextLine = splitted[index + 1] === undefined ? '' : splitted[index + 1].trim()
+    const trimmedLine = line.trim()
+    const trimmedNextLine = splitted[index + 1] === undefined ? '' : splitted[index + 1].trim()
     if (trimmedLine.match('```')) {
       isInsideCodeBlock = !isInsideCodeBlock
     }

browser/lib/getTodoStatus.js

@@ -1,10 +1,10 @@
 export function getTodoStatus (content) {
-  let splitted = content.split('\n')
+  const splitted = content.split('\n')
   let numberOfTodo = 0
   let numberOfCompletedTodo = 0
 
   splitted.forEach((line) => {
-    let trimmedLine = line.trim()
+    const trimmedLine = line.trim()
     if (trimmedLine.match(/^[\+\-\*] \[\s|x\] ./)) {
       numberOfTodo++
     }

browser/lib/markdown.js

@@ -7,8 +7,8 @@ import _ from 'lodash'
 const katex = window.katex
 
 function createGutter (str) {
-  let lc = (str.match(/\n/g) || []).length
-  let lines = []
+  const lc = (str.match(/\n/g) || []).length
+  const lines = []
   for (let i = 1; i <= lc; i++) {
     lines.push('<span class="CodeMirror-linenumber">' + i + '</span>')
   }
@@ -76,8 +76,8 @@ md.use(require('markdown-it-plantuml'))
 md.block.ruler.at('paragraph', function (state, startLine/*, endLine */) {
   let content, terminate, i, l, token
   let nextLine = startLine + 1
-  let terminatorRules = state.md.block.ruler.getRules('paragraph')
-  let endLine = state.lineMax
+  const terminatorRules = state.md.block.ruler.getRules('paragraph')
+  const endLine = state.lineMax
 
   // jump line-by-line until empty one or EOF
   for (; nextLine < endLine && !state.isEmpty(nextLine); nextLine++) {
@@ -107,7 +107,7 @@ md.block.ruler.at('paragraph', function (state, startLine/*, endLine */) {
   token.map = [ startLine, state.line ]
 
   if (state.parentType === 'list') {
-    let match = content.match(/^\[( |x)\] ?(.+)/i)
+    const match = content.match(/^\[( |x)\] ?(.+)/i)
     if (match) {
       content = `<label class='taskListItem' for='checkbox-${startLine + 1}'><input type='checkbox'${match[1] !== ' ' ? ' checked' : ''} id='checkbox-${startLine + 1}'/> ${content.substring(4, content.length)}</label>`
     }
@@ -124,7 +124,7 @@ md.block.ruler.at('paragraph', function (state, startLine/*, endLine */) {
 })
 
 // Add line number attribute for scrolling
-let originalRender = md.renderer.render
+const originalRender = md.renderer.render
 md.renderer.render = function render (tokens, options, env) {
   tokens.forEach((token) => {
     switch (token.type) {
@@ -135,7 +135,7 @@ md.renderer.render = function render (tokens, options, env) {
         token.attrPush(['data-line', token.map[0]])
     }
   })
-  let result = originalRender.call(md.renderer, tokens, options, env)
+  const result = originalRender.call(md.renderer, tokens, options, env)
   return result
 }
 // FIXME We should not depend on global variable.

browser/lib/search.js

@@ -16,7 +16,7 @@ export default function searchFromNotes (notes, search) {
 
 function findByTag (notes, block) {
   const tag = block.match(/#(.+)/)[1]
-  let regExp = new RegExp(_.escapeRegExp(tag), 'i')
+  const regExp = new RegExp(_.escapeRegExp(tag), 'i')
   return notes.filter((note) => {
     if (!_.isArray(note.tags)) return false
     return note.tags.some((_tag) => {
@@ -26,7 +26,7 @@ function findByTag (notes, block) {
 }
 
 function findByWord (notes, block) {
-  let regExp = new RegExp(_.escapeRegExp(block), 'i')
+  const regExp = new RegExp(_.escapeRegExp(block), 'i')
   return notes.filter((note) => {
     if (_.isArray(note.tags) && note.tags.some((_tag) => {
       return _tag.match(regExp)