diff --git a/lib/models/author.js b/lib/models/author.ts
similarity index 75%
rename from lib/models/author.js
rename to lib/models/author.ts
index e65791cb5..0c3d2c0eb 100644
--- a/lib/models/author.js
+++ b/lib/models/author.ts
@@ -1,11 +1,11 @@
-'use strict'
 // external modules
-var Sequelize = require('sequelize')
+import {DataTypes} from 'sequelize';
 
-module.exports = function (sequelize, DataTypes) {
-  var Author = sequelize.define('Author', {
+
+function createAutorModel(sequelize) {
+  const Author = sequelize.define('Author', {
     id: {
-      type: Sequelize.INTEGER,
+      type: DataTypes.INTEGER,
       primaryKey: true,
       autoIncrement: true
     },
@@ -19,7 +19,7 @@ module.exports = function (sequelize, DataTypes) {
         fields: ['noteId', 'userId']
       }
     ]
-  })
+  });
 
   Author.associate = function (models) {
     Author.belongsTo(models.Note, {
@@ -28,7 +28,7 @@ module.exports = function (sequelize, DataTypes) {
       constraints: false,
       onDelete: 'CASCADE',
       hooks: true
-    })
+    });
     Author.belongsTo(models.User, {
       foreignKey: 'userId',
       as: 'user',
@@ -36,7 +36,9 @@ module.exports = function (sequelize, DataTypes) {
       onDelete: 'CASCADE',
       hooks: true
     })
-  }
+  };
 
   return Author
 }
+
+export = createAutorModel
diff --git a/lib/web/note/controller.js b/lib/web/note/controller.js
deleted file mode 100644
index e537fe08a..000000000
--- a/lib/web/note/controller.js
+++ /dev/null
@@ -1,147 +0,0 @@
-'use strict'
-
-const models = require('../../models')
-const logger = require('../../logger')
-const config = require('../../config')
-const errors = require('../../errors')
-
-const noteUtil = require('./util')
-const noteActions = require('./actions')
-
-exports.publishNoteActions = function (req, res, next) {
-  noteUtil.findNote(req, res, function (note) {
-    const action = req.params.action
-    switch (action) {
-      case 'download':
-        exports.downloadMarkdown(req, res, note)
-        break
-      case 'edit':
-        res.redirect(config.serverURL + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)) + '?both')
-        break
-      default:
-        res.redirect(config.serverURL + '/s/' + note.shortid)
-        break
-    }
-  })
-}
-
-exports.showPublishNote = function (req, res, next) {
-  const include = [{
-    model: models.User,
-    as: 'owner'
-  }, {
-    model: models.User,
-    as: 'lastchangeuser'
-  }]
-  noteUtil.findNote(req, res, function (note) {
-    // force to use short id
-    const shortid = req.params.shortid
-    if ((note.alias && shortid !== note.alias) || (!note.alias && shortid !== note.shortid)) {
-      return res.redirect(config.serverURL + '/s/' + (note.alias || note.shortid))
-    }
-    note.increment('viewcount').then(function (note) {
-      if (!note) {
-        return errors.errorNotFound(res)
-      }
-      noteUtil.getPublishData(req, res, note, (data) => {
-        res.set({
-          'Cache-Control': 'private' // only cache by client
-        })
-        return res.render('pretty.ejs', data)
-      })
-    }).catch(function (err) {
-      logger.error(err)
-      return errors.errorInternalError(res)
-    })
-  }, include)
-}
-
-exports.showNote = function (req, res, next) {
-  noteUtil.findNote(req, res, function (note) {
-    // force to use note id
-    const noteId = req.params.noteId
-    const id = models.Note.encodeNoteId(note.id)
-    if ((note.alias && noteId !== note.alias) || (!note.alias && noteId !== id)) {
-      return res.redirect(config.serverURL + '/' + (note.alias || id))
-    }
-    const body = note.content
-    const extracted = models.Note.extractMeta(body)
-    const meta = models.Note.parseMeta(extracted.meta)
-    let title = models.Note.decodeTitle(note.title)
-    title = models.Note.generateWebTitle(meta.title || title)
-    const opengraph = models.Note.parseOpengraph(meta, title)
-    res.set({
-      'Cache-Control': 'private', // only cache by client
-      'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
-    })
-    return res.render('codimd.ejs', {
-      title: title,
-      opengraph: opengraph
-    })
-  })
-}
-
-exports.createFromPOST = function (req, res, next) {
-  let body = ''
-  if (req.body && req.body.length > config.documentMaxLength) {
-    return errors.errorTooLong(res)
-  } else if (req.body) {
-    body = req.body
-  }
-  body = body.replace(/[\r]/g, '')
-  return noteUtil.newNote(req, res, body)
-}
-
-exports.doAction = function (req, res, next) {
-  const noteId = req.params.noteId
-  noteUtil.findNote(req, res, function (note) {
-    const action = req.params.action
-    switch (action) {
-      case 'publish':
-      case 'pretty': // pretty deprecated
-        res.redirect(config.serverURL + '/s/' + (note.alias || note.shortid))
-        break
-      case 'slide':
-        res.redirect(config.serverURL + '/p/' + (note.alias || note.shortid))
-        break
-      case 'download':
-        exports.downloadMarkdown(req, res, note)
-        break
-      case 'info':
-        noteActions.getInfo(req, res, note)
-        break
-      case 'pdf':
-        if (config.allowPDFExport) {
-          noteActions.createPDF(req, res, note)
-        } else {
-          logger.error('PDF export failed: Disabled by config. Set "allowPDFExport: true" to enable. Check the documentation for details')
-          errors.errorForbidden(res)
-        }
-        break
-      case 'gist':
-        noteActions.createGist(req, res, note)
-        break
-      case 'revision':
-        noteActions.getRevision(req, res, note)
-        break
-      default:
-        return res.redirect(config.serverURL + '/' + noteId)
-    }
-  })
-}
-
-exports.downloadMarkdown = function (req, res, note) {
-  const body = note.content
-  let filename = models.Note.decodeTitle(note.title)
-  filename = encodeURIComponent(filename)
-  res.set({
-    'Access-Control-Allow-Origin': '*', // allow CORS as API
-    'Access-Control-Allow-Headers': 'Range',
-    'Access-Control-Expose-Headers': 'Cache-Control, Content-Encoding, Content-Range',
-    'Content-Type': 'text/markdown; charset=UTF-8',
-    'Cache-Control': 'private',
-    'Content-disposition': 'attachment; filename=' + filename + '.md',
-    'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
-  })
-  res.send(body)
-}
diff --git a/lib/web/note/controller.ts b/lib/web/note/controller.ts
new file mode 100644
index 000000000..d59d2d80b
--- /dev/null
+++ b/lib/web/note/controller.ts
@@ -0,0 +1,149 @@
+import {NextFunction, Response} from "express";
+import {NoteUtils} from "./util";
+
+import models from "../../models";
+
+import noteActions from "./actions";
+import errors from "../../errors";
+import config from "../../config";
+import logger from "../../logger";
+
+export module NoteController {
+  export function publishNoteActions(req: any, res: Response, next: NextFunction) {
+    NoteUtils.findNote(req, res, function (note) {
+      const action = req.params.action;
+      switch (action) {
+        case 'download':
+          exports.downloadMarkdown(req, res, note);
+          break;
+        case 'edit':
+          res.redirect(config.serverURL + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)) + '?both');
+          break;
+        default:
+          res.redirect(config.serverURL + '/s/' + note.shortid);
+          break
+      }
+    })
+  }
+
+  export function showPublishNote(req: any, res: Response, next: NextFunction) {
+    const include = [{
+      model: models.User,
+      as: 'owner'
+    }, {
+      model: models.User,
+      as: 'lastchangeuser'
+    }];
+    NoteUtils.findNote(req, res, function (note) {
+      // force to use short id
+      const shortid = req.params.shortid;
+      if ((note.alias && shortid !== note.alias) || (!note.alias && shortid !== note.shortid)) {
+        return res.redirect(config.serverURL + '/s/' + (note.alias || note.shortid))
+      }
+      note.increment('viewcount').then(function (note) {
+        if (!note) {
+          return errors.errorNotFound(res)
+        }
+        NoteUtils.getPublishData(req, res, note, (data) => {
+          res.set({
+            'Cache-Control': 'private' // only cache by client
+          });
+          return res.render('pretty.ejs', data)
+        })
+      }).catch(function (err) {
+        logger.error(err);
+        return errors.errorInternalError(res)
+      })
+    }, include)
+  }
+
+  export function showNote(req: any, res: Response, next: NextFunction) {
+    NoteUtils.findNote(req, res, function (note) {
+      // force to use note id
+      const noteId = req.params.noteId;
+      const id = models.Note.encodeNoteId(note.id);
+      if ((note.alias && noteId !== note.alias) || (!note.alias && noteId !== id)) {
+        return res.redirect(config.serverURL + '/' + (note.alias || id))
+      }
+      const body = note.content;
+      const extracted = models.Note.extractMeta(body);
+      const meta = models.Note.parseMeta(extracted.meta);
+      let title = models.Note.decodeTitle(note.title);
+      title = models.Note.generateWebTitle(meta.title || title);
+      const opengraph = models.Note.parseOpengraph(meta, title);
+      res.set({
+        'Cache-Control': 'private', // only cache by client
+        'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
+      });
+      return res.render('codimd.ejs', {
+        title: title,
+        opengraph: opengraph
+      })
+    })
+  }
+
+  export function createFromPOST(req: any, res: Response, next: NextFunction) {
+    let body = '';
+    if (req.body && req.body.length > config.documentMaxLength) {
+      return errors.errorTooLong(res)
+    } else if (req.body) {
+      body = req.body
+    }
+    body = body.replace(/[\r]/g, '');
+    return NoteUtils.newNote(req, res, body)
+  }
+
+  export function doAction(req: any, res: Response, next: NextFunction) {
+    const noteId = req.params.noteId;
+    NoteUtils.findNote(req, res, function (note) {
+      const action = req.params.action;
+      switch (action) {
+        case 'publish':
+        case 'pretty': // pretty deprecated
+          res.redirect(config.serverURL + '/s/' + (note.alias || note.shortid));
+          break;
+        case 'slide':
+          res.redirect(config.serverURL + '/p/' + (note.alias || note.shortid));
+          break;
+        case 'download':
+          exports.downloadMarkdown(req, res, note);
+          break;
+        case 'info':
+          noteActions.getInfo(req, res, note);
+          break;
+        case 'pdf':
+          if (config.allowPDFExport) {
+            noteActions.createPDF(req, res, note)
+          } else {
+            logger.error('PDF export failed: Disabled by config. Set "allowPDFExport: true" to enable. Check the documentation for details');
+            errors.errorForbidden(res)
+          }
+          break;
+        case 'gist':
+          noteActions.createGist(req, res, note);
+          break;
+        case 'revision':
+          noteActions.getRevision(req, res, note);
+          break;
+        default:
+          return res.redirect(config.serverURL + '/' + noteId)
+      }
+    })
+  }
+
+  export function downloadMarkdown(req: Request, res: Response, note: any) {
+    const body = note.content;
+    let filename = models.Note.decodeTitle(note.title);
+    filename = encodeURIComponent(filename);
+    res.set({
+      'Access-Control-Allow-Origin': '*', // allow CORS as API
+      'Access-Control-Allow-Headers': 'Range',
+      'Access-Control-Expose-Headers': 'Cache-Control, Content-Encoding, Content-Range',
+      'Content-Type': 'text/markdown; charset=UTF-8',
+      'Cache-Control': 'private',
+      'Content-disposition': 'attachment; filename=' + filename + '.md',
+      'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
+    });
+    res.send(body)
+  }
+}
diff --git a/lib/web/note/router.js b/lib/web/note/router.js
deleted file mode 100644
index cf6fdf431..000000000
--- a/lib/web/note/router.js
+++ /dev/null
@@ -1,30 +0,0 @@
-'use strict'
-
-const Router = require('express').Router
-const { markdownParser } = require('../utils')
-
-const router = module.exports = Router()
-
-const noteController = require('./controller')
-const slide = require('./slide')
-
-// get new note
-router.get('/new', noteController.createFromPOST)
-// post new note with content
-router.post('/new', markdownParser, noteController.createFromPOST)
-// post new note with content and alias
-router.post('/new/:noteId', markdownParser, noteController.createFromPOST)
-// get publish note
-router.get('/s/:shortid', noteController.showPublishNote)
-// publish note actions
-router.get('/s/:shortid/:action', noteController.publishNoteActions)
-// get publish slide
-router.get('/p/:shortid', slide.showPublishSlide)
-// publish slide actions
-router.get('/p/:shortid/:action', slide.publishSlideActions)
-// get note by id
-router.get('/:noteId', noteController.showNote)
-// note actions
-router.get('/:noteId/:action', noteController.doAction)
-// note actions with action id
-router.get('/:noteId/:action/:actionId', noteController.doAction)
diff --git a/lib/web/note/router.ts b/lib/web/note/router.ts
new file mode 100644
index 000000000..a200c59dd
--- /dev/null
+++ b/lib/web/note/router.ts
@@ -0,0 +1,27 @@
+import {markdownParser} from "../utils";
+
+import slide from "./slide";
+import {NoteController} from "./controller";
+import {Router} from "express";
+
+const router = module.exports = Router();
+// get new note
+router.get('/new', NoteController.createFromPOST);
+// post new note with content
+router.post('/new', markdownParser, NoteController.createFromPOST);
+// post new note with content and alias
+router.post('/new/:noteId', markdownParser, NoteController.createFromPOST);
+// get publish note
+router.get('/s/:shortid', NoteController.showPublishNote);
+// publish note actions
+router.get('/s/:shortid/:action', NoteController.publishNoteActions);
+// get publish slide
+router.get('/p/:shortid', slide.showPublishSlide);
+// publish slide actions
+router.get('/p/:shortid/:action', slide.publishSlideActions);
+// get note by id
+router.get('/:noteId', NoteController.showNote);
+// note actions
+router.get('/:noteId/:action', NoteController.doAction);
+// note actions with action id
+router.get('/:noteId/:action/:actionId', NoteController.doAction);
diff --git a/lib/web/note/util.js b/lib/web/note/util.js
deleted file mode 100644
index eadfb1a3d..000000000
--- a/lib/web/note/util.js
+++ /dev/null
@@ -1,109 +0,0 @@
-const models = require('../../models')
-const logger = require('../../logger')
-const config = require('../../config')
-const errors = require('../../errors')
-const fs = require('fs')
-const path = require('path')
-
-exports.findNote = function (req, res, callback, include) {
-  const id = req.params.noteId || req.params.shortid
-  models.Note.parseNoteId(id, function (err, _id) {
-    if (err) {
-      logger.error(err)
-      return errors.errorInternalError(res)
-    }
-    models.Note.findOne({
-      where: {
-        id: _id
-      },
-      include: include || null
-    }).then(function (note) {
-      if (!note) {
-        return exports.newNote(req, res, null)
-      }
-      if (!exports.checkViewPermission(req, note)) {
-        return errors.errorForbidden(res)
-      } else {
-        return callback(note)
-      }
-    }).catch(function (err) {
-      logger.error(err)
-      return errors.errorInternalError(res)
-    })
-  })
-}
-
-exports.checkViewPermission = function (req, note) {
-  if (note.permission === 'private') {
-    return !(!req.isAuthenticated() || note.ownerId !== req.user.id)
-  } else if (note.permission === 'limited' || note.permission === 'protected') {
-    return req.isAuthenticated()
-  } else {
-    return true
-  }
-}
-
-exports.newNote = function (req, res, body) {
-  let owner = null
-  const noteId = req.params.noteId ? req.params.noteId : null
-  if (req.isAuthenticated()) {
-    owner = req.user.id
-  } else if (!config.allowAnonymous) {
-    return errors.errorForbidden(res)
-  }
-  if (config.allowFreeURL && noteId && !config.forbiddenNoteIDs.includes(noteId)) {
-    req.alias = noteId
-  } else if (noteId) {
-    return req.method === 'POST' ? errors.errorForbidden(res) : errors.errorNotFound(res)
-  }
-  models.Note.create({
-    ownerId: owner,
-    alias: req.alias ? req.alias : null,
-    content: body
-  }).then(function (note) {
-    return res.redirect(config.serverURL + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)))
-  }).catch(function (err) {
-    logger.error(err)
-    return errors.errorInternalError(res)
-  })
-}
-
-exports.getPublishData = function (req, res, note, callback) {
-  const body = note.content
-  const extracted = models.Note.extractMeta(body)
-  const markdown = extracted.markdown
-  const meta = models.Note.parseMeta(extracted.meta)
-  const createtime = note.createdAt
-  const updatetime = note.lastchangeAt
-  let title = models.Note.decodeTitle(note.title)
-  title = models.Note.generateWebTitle(meta.title || title)
-  const ogdata = models.Note.parseOpengraph(meta, title)
-  const data = {
-    title: title,
-    description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
-    viewcount: note.viewcount,
-    createtime: createtime,
-    updatetime: updatetime,
-    body: markdown,
-    theme: meta.slideOptions && isRevealTheme(meta.slideOptions.theme),
-    meta: JSON.stringify(extracted.meta),
-    owner: note.owner ? note.owner.id : null,
-    ownerprofile: note.owner ? models.User.getProfile(note.owner) : null,
-    lastchangeuser: note.lastchangeuser ? note.lastchangeuser.id : null,
-    lastchangeuserprofile: note.lastchangeuser ? models.User.getProfile(note.lastchangeuser) : null,
-    robots: meta.robots || false, // default allow robots
-    GA: meta.GA,
-    disqus: meta.disqus,
-    cspNonce: res.locals.nonce,
-    dnt: req.headers.dnt,
-    opengraph: ogdata
-  }
-  callback(data)
-}
-
-function isRevealTheme (theme) {
-  if (fs.existsSync(path.join(__dirname, '..', 'public', 'build', 'reveal.js', 'css', 'theme', theme + '.css'))) {
-    return theme
-  }
-  return undefined
-}
diff --git a/lib/web/note/util.ts b/lib/web/note/util.ts
new file mode 100644
index 000000000..09cd60e94
--- /dev/null
+++ b/lib/web/note/util.ts
@@ -0,0 +1,115 @@
+import {Includeable} from "sequelize";
+import {Response} from "express";
+
+import path from "path";
+import fs from "fs";
+import errors from "../../errors";
+import config from "../../config";
+import logger from "../../logger";
+import models from "../../models";
+
+export module NoteUtils {
+  export function findNote(req, res, callback: (note: any) => void, include?: Includeable[]) {
+    const id = req.params.noteId || req.params.shortid;
+    models.Note.parseNoteId(id, function (err, _id) {
+      if (err) {
+        logger.error(err);
+        return errors.errorInternalError(res)
+      }
+      models.Note.findOne({
+        where: {
+          id: _id
+        },
+        include: include || null
+      }).then(function (note) {
+        if (!note) {
+          return newNote(req, res, null)
+        }
+        if (!checkViewPermission(req, note)) {
+          return errors.errorForbidden(res)
+        } else {
+          return callback(note)
+        }
+      }).catch(function (err) {
+        logger.error(err);
+        return errors.errorInternalError(res)
+      })
+    })
+  }
+
+  export function checkViewPermission(req: any, note: any) {
+    if (note.permission === 'private') {
+      return !(!req.isAuthenticated() || note.ownerId !== req.user.id)
+    } else if (note.permission === 'limited' || note.permission === 'protected') {
+      return req.isAuthenticated()
+    } else {
+      return true
+    }
+  }
+
+  export function newNote(req: any, res: Response, body: string) {
+    let owner = null;
+    const noteId = req.params.noteId ? req.params.noteId : null;
+    if (req.isAuthenticated()) {
+      owner = req.user.id
+    } else if (!config.allowAnonymous) {
+      return errors.errorForbidden(res)
+    }
+    if (config.allowFreeURL && noteId && !config.forbiddenNoteIDs.includes(noteId)) {
+      req.alias = noteId
+    } else if (noteId) {
+      return req.method === 'POST' ? errors.errorForbidden(res) : errors.errorNotFound(res)
+    }
+    models.Note.create({
+      ownerId: owner,
+      alias: req.alias ? req.alias : null,
+      content: body
+    }).then(function (note) {
+      return res.redirect(config.serverURL + '/' + (note.alias ? note.alias : models.Note.encodeNoteId(note.id)))
+    }).catch(function (err) {
+      logger.error(err);
+      return errors.errorInternalError(res)
+    })
+  }
+
+  export function getPublishData(req: any, res: Response, note: any, callback: (data: any) => void) {
+    const body = note.content;
+    const extracted = models.Note.extractMeta(body);
+    const markdown = extracted.markdown;
+    const meta = models.Note.parseMeta(extracted.meta);
+    const createtime = note.createdAt;
+    const updatetime = note.lastchangeAt;
+    let title = models.Note.decodeTitle(note.title);
+    title = models.Note.generateWebTitle(meta.title || title);
+    const ogdata = models.Note.parseOpengraph(meta, title);
+    const data = {
+      title: title,
+      description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
+      viewcount: note.viewcount,
+      createtime: createtime,
+      updatetime: updatetime,
+      body: markdown,
+      theme: meta.slideOptions && isRevealTheme(meta.slideOptions.theme),
+      meta: JSON.stringify(extracted.meta),
+      owner: note.owner ? note.owner.id : null,
+      ownerprofile: note.owner ? models.User.getProfile(note.owner) : null,
+      lastchangeuser: note.lastchangeuser ? note.lastchangeuser.id : null,
+      lastchangeuserprofile: note.lastchangeuser ? models.User.getProfile(note.lastchangeuser) : null,
+      robots: meta.robots || false, // default allow robots
+      GA: meta.GA,
+      disqus: meta.disqus,
+      cspNonce: res.locals.nonce,
+      dnt: req.headers.dnt,
+      opengraph: ogdata
+    };
+    callback(data)
+  }
+
+  function isRevealTheme(theme: string) {
+    if (fs.existsSync(path.join(__dirname, '..', 'public', 'build', 'reveal.js', 'css', 'theme', theme + '.css'))) {
+      return theme
+    }
+    return undefined
+  }
+}
+