diff --git a/.env b/.env
index 77f18d9..ef0e757 100644
--- a/.env
+++ b/.env
@@ -1,8 +1,16 @@
+NODE_ENV=production
+
+CRAWL_FORM="kipalog,daynhauhoc,viblopost" # giaphiep is not supported!
+
 KIPALOG_LAST_PAGE=76
 DAYNHAUHOC_LAST_PAGE=1358
-GIAPHIEP_LAST_PAGE=1375
 VIBLOQUESTION_LAST_PAGE=64
+VIBLOPOST_LAST_PAGE=1350
+# GIAPHIEP_LAST_PAGE=1375
 
 ## For debug
-# DAYNHAUHOC_LAST_PAGE=2
-# KIPALOG_LAST_PAGE=2
\ No newline at end of file
+# KIPALOG_LAST_PAGE=76
+# DAYNHAUHOC_LAST_PAGE=1358
+# VIBLOQUESTION_LAST_PAGE=64
+# VIBLOPOST_LAST_PAGE=1350
+# GIAPHIEP_LAST_PAGE=1375
\ No newline at end of file
diff --git a/app.js b/app.js
index 814108f..f0d5975 100644
--- a/app.js
+++ b/app.js
@@ -5,12 +5,16 @@ const chalk = require('chalk');
 
 const { kipalogCrawler, kipalogPaginateUrl } = require('./crawlers/kipalogCrawler');
 const { daynhauhocCrawler, daynhauhocPaginateUrl } = require('./crawlers/daynhauhocCrawler');
+const { giaphiepCrawler, giaphiepPaginateUrl } = require('./crawlers/giaphiepCrawler');
+const { viblopostCrawler, viblopostPaginateUrl } = require('./crawlers/viblopostCrawler');
 
-const { kipalogLastPage, daynhauhocLastPage, giaphiepLastPage, vibloquestionLastPage } = require('./config/app.config');
+const { kipalogLastPage, daynhauhocLastPage, giaphiepLastPage, vibloquestionLastPage, viblopostLastPage, crawlFrom } = require('./config/app.config');
 
-const crawlers = { kipalogCrawler, daynhauhocCrawler };
-const paginateUrls = { kipalogPaginateUrl, daynhauhocPaginateUrl };
-const lastPages = { kipalogLastPage, daynhauhocLastPage, giaphiepLastPage, vibloquestionLastPage };
+const { getCurrentTime, sleep, getRandomInt } = require('./shared');
+
+const crawlers = { kipalogCrawler, daynhauhocCrawler, giaphiepCrawler, viblopostCrawler };
+const paginateUrls = { kipalogPaginateUrl, daynhauhocPaginateUrl, giaphiepPaginateUrl, viblopostPaginateUrl };
+const lastPages = { kipalogLastPage, daynhauhocLastPage, giaphiepLastPage, vibloquestionLastPage, viblopostLastPage };
 
 const paginateCrawler = async (pageUrls) => {
     const browser = await puppeteer.launch({ headless: true });
@@ -20,6 +24,10 @@ const paginateCrawler = async (pageUrls) => {
     for (let i = 0; i < pageUrls.length; i++) {
         const page = await browser.newPage();
         const { url, type } = pageUrls[i];
+        await page.setDefaultNavigationTimeout(0);
+        let delay = getRandomInt(500, 10_000);
+        console.log(getCurrentTime() + chalk.yellow('Delay... ') + chalk.white.bgRed(`${delay / 1000}s\t`) + chalk.green(url));
+        await sleep(delay);
         await page.goto(url);
 
         let articlesJSON = await page.evaluate(() => {
@@ -30,6 +38,8 @@ const paginateCrawler = async (pageUrls) => {
 
         if (type === 'daynhauhoc') {
             articles = articles.topic_list.topics;
+        } else if (type === 'giaphiep' || type === 'viblopost') {
+            articles = articles.data;
         }
 
         articleCounter += articles.length;
@@ -37,19 +47,19 @@ const paginateCrawler = async (pageUrls) => {
             return await crawlers[`${type}Crawler`](browser, article);
         });
 
-        const res = await Promise.all(resPromise);
+        await Promise.all(resPromise);
 
         page.close();
     }
 
-    console.log(chalk.yellow('Crawled successfully: ') + chalk.white.bgRed(`${articleCounter} articles`));
+    console.log(getCurrentTime() + chalk.yellow('Crawled successfully: ') + chalk.white.bgRed(`${articleCounter} articles`));
     browser.close();
 }
 
 const crawler = () => {
     let pageUrls = [];
 
-    const types = ['kipalog', 'daynhauhoc'];
+    const types = crawlFrom;
 
     types.map(type => {
         const end = lastPages[`${type}LastPage`];
diff --git a/config/app.config.js b/config/app.config.js
index 95ccfc2..74ae344 100644
--- a/config/app.config.js
+++ b/config/app.config.js
@@ -1,9 +1,11 @@
 module.exports = {
-    app :{
+    app: {
 
     },
     kipalogLastPage: process.env.KIPALOG_LAST_PAGE,
     daynhauhocLastPage: process.env.DAYNHAUHOC_LAST_PAGE,
     giaphiepLastPage: process.env.GIAPHIEP_LAST_PAGE,
     vibloquestionLastPage: process.env.VIBLOQUESTION_LAST_PAGE,
+    viblopostLastPage: process.env.VIBLOPOST_LAST_PAGE,
+    crawlFrom: String(process.env.CRAWL_FROM).split(',')
 }
\ No newline at end of file
diff --git a/config/config.json b/config/config.json
index 4965cf3..16a7309 100644
--- a/config/config.json
+++ b/config/config.json
@@ -9,6 +9,7 @@
   },
   "production": {
     "storage": "development.db",
-    "dialect": "sqlite"
+    "dialect": "sqlite",
+    "logging": false
   }
 }
\ No newline at end of file
diff --git a/crawlers/daynhauhocCrawler.js b/crawlers/daynhauhocCrawler.js
index 8fb6b86..b8772cb 100644
--- a/crawlers/daynhauhocCrawler.js
+++ b/crawlers/daynhauhocCrawler.js
@@ -2,6 +2,8 @@ const chalk = require('chalk');
 
 const { articleModel } = require('../models');
 
+const { getCurrentTime, sleep, getRandomInt } = require('../shared');
+
 const daynhauhocHomePage = 'https://daynhauhoc.com';
 
 const type = 'daynhauhoc';
@@ -20,12 +22,16 @@ const daynhauhocCrawler = async (browser, article) => {
 
     let path = `/t/${slug}/${id}`;
     const pageUrl = `${daynhauhocHomePage}${path}`;
-    console.log(chalk.yellow('Crawling... ') + chalk.green(pageUrl));
 
     const page = await browser.newPage();
     await page.setDefaultNavigationTimeout(0);
+    let delay = getRandomInt(500, 10_000);
+    console.log(getCurrentTime() + chalk.yellow('Delay... ') + chalk.white.bgRed(`${delay / 1000}s\t`) + chalk.green(pageUrl));
+    await sleep(delay);
     await page.goto(pageUrl);
 
+    console.log(getCurrentTime() + chalk.yellow('Crawling...\t') + chalk.green(pageUrl));
+
     const { htmlContent, textContent } = await page.evaluate(() => {
         const raw = document.querySelectorAll('#post_1 > div > div.topic-body.clearfix > div.regular.contents')[0];
         const htmlContent = raw.outerHTML;
@@ -36,6 +42,7 @@ const daynhauhocCrawler = async (browser, article) => {
     page.close();
     const articleData = { title, path, tags, htmlContent, textContent, from: `${type}` };
     await articleModel.create(articleData);
+    console.log(getCurrentTime() + chalk.yellow('Done:\t\t') + chalk.green(pageUrl));
     return articleData;
 }
 
diff --git a/crawlers/giaphiepCrawler.js b/crawlers/giaphiepCrawler.js
index 242cba8..398f0e7 100644
--- a/crawlers/giaphiepCrawler.js
+++ b/crawlers/giaphiepCrawler.js
@@ -1,2 +1,101 @@
+const chalk = require('chalk');
+
+const { articleModel } = require('../models');
+const { sleep, getRandomInt, getCurrentTime } = require('../shared');
+
+const giaphiepHomePage = 'https://giaphiep.com';
+
+const type = 'giaphiep';
+
+const giaphiepPaginateUrl = (page = 0) => {
+    return `https://api.giaphiep.com/posts?page=${page}`;
+}
+
+const giaphiepCrawler = async (browser, article) => {
+    let { title, link, tags } = article;
+
+    if (tags.length !== 0)
+        tags = tags.map(tag => String(tag.name).toLocaleLowerCase().trim().replace(' ', '-')).join(';');
+    else
+        tags = 'none';
+
+    let path = `/blog/${link}`;
+    const pageUrl = `${giaphiepHomePage}${path}`;
+
+    const page = await browser.newPage();
+    await page.setDefaultNavigationTimeout(0);
+
+    await sleep(getRandomInt(5000, 30_000));
+
+    await page.goto(pageUrl);
+
+    // retry: while (true) {
+    //     try {
+    //         console.log(getCurrentTime() + chalk.yellow(' Crawling... ') + chalk.green(pageUrl));
+    //         const { htmlContent, textContent, realPath } = await page.evaluate(() => {
+    //             const raw = document.querySelectorAll('#__layout > div > div.el-col.el-col-20 > div:nth-child(1) > div.el-col.el-col-24.el-col-md-18 > div:nth-child(2) > div > div > div.content')[0];
+    //             const realPathRaw = document.querySelectorAll('#__layout > div > div.el-col.el-col-20 > div:nth-child(1) > div.el-col.el-col-24.el-col-md-18 > div:nth-child(2) > div > div > div:nth-child(6) > h3 > a')[0];
+    //             const htmlContent = raw.outerHTML;
+    //             const { textContent } = raw;
+    //             const realPath = realPathRaw.textContent.replace('https://viblo.asia', '');;
+    //             return { htmlContent, textContent, realPath };
+    //         });
+
+    //         page.close();
+    //         const articleData = { title, path: realPath, tags, htmlContent, textContent, from: `viblo` };
+    //         await articleModel.create(articleData);
+    //         return articleData;
+    //     } catch (e) {
+    //         const delay = getRandomInt(5000, 100_000);
+    //         console.log(getCurrentTime() + chalk.yellow('Re-try crawling... ' + chalk.green(pageUrl)) + chalk.white.bgRed(` after ${delay / 1000}s`));
+    //         await sleep(delay);
+    //         await page.reload({ waitUntil: ["networkidle0", "domcontentloaded"] });
+    //         console.log(getCurrentTime() + chalk.yellow('Crawling... ' + chalk.green(pageUrl)));
+    //         continue retry;
+    //     }
+    // }
+
+    console.log(getCurrentTime() + chalk.yellow(' Crawling... ') + chalk.green(pageUrl));
+    const { htmlContent, textContent, realPath } = await page.evaluate(async () => {
+        const sleep = (ms = 1000) => {
+            return new Promise((resolve) => setTimeout(resolve, ms));
+        }
+
+        const getRandomInt = (min, max) => {
+            min = Math.ceil(min);
+            max = Math.floor(max);
+            return Math.floor(Math.random() * (max - min + 1)) + min;
+        }
+
+        let raw = null;
+        retry: while (true) {
+            try {
+                raw = document.querySelectorAll('#__layout > div > div.el-col.el-col-20 > div:nth-child(1) > div.el-col.el-col-24.el-col-md-18 > div:nth-child(2) > div > div > div.content')[0];
+                const realPathRaw = document.querySelectorAll('#__layout > div > div.el-col.el-col-20 > div:nth-child(1) > div.el-col.el-col-24.el-col-md-18 > div:nth-child(2) > div > div > div:nth-child(6) > h3 > a')[0];
+                const htmlContent = raw.outerHTML;
+                const { textContent } = raw;
+                const realPath = realPathRaw.textContent.replace('https://viblo.asia', '');
+                return { htmlContent, textContent, realPath };
+            } catch (e) {
+                await sleep(getRandomInt(5000, 30_000));
+                await location.reload();
+                continue retry;
+            }
+        }
+    });
+
+    page.close();
+    const articleData = { title, path: realPath, tags, htmlContent, textContent, from: `viblo` };
+    await articleModel.create(articleData);
+    return articleData;
+}
+
+module.exports = {
+    giaphiepPaginateUrl,
+    giaphiepCrawler,
+    giaphiepHomePage,
+    type
+}
+
 // max=1375x20
 // https://api.giaphiep.com/posts?page=1375
\ No newline at end of file
diff --git a/crawlers/kipalogCrawler.js b/crawlers/kipalogCrawler.js
index 0a5247f..49a3ea0 100644
--- a/crawlers/kipalogCrawler.js
+++ b/crawlers/kipalogCrawler.js
@@ -2,6 +2,8 @@ const chalk = require('chalk');
 
 const { articleModel } = require('../models');
 
+const { getCurrentTime, sleep, getRandomInt } = require('../shared');
+
 const kipalogHomePage = 'https://kipalog.com';
 
 const type = 'kipalog';
@@ -19,12 +21,16 @@ const kipalogCrawler = async (browser, article) => {
         tags = 'none';
 
     const pageUrl = `${kipalogHomePage}${path}`;
-    console.log(chalk.yellow('Crawling... ') + chalk.green(pageUrl));
 
     const page = await browser.newPage();
     await page.setDefaultNavigationTimeout(0);
+    let delay = getRandomInt(500, 10_000);
+    console.log(getCurrentTime() + chalk.yellow('Delay... ') + chalk.white.bgRed(`${delay / 1000}s\t`) + chalk.green(pageUrl));
+    await sleep(delay);
     await page.goto(pageUrl);
 
+    console.log(getCurrentTime() + chalk.yellow('Crawling...\t') + chalk.green(pageUrl));
+
     const { htmlContent, textContent } = await page.evaluate(() => {
         const raw = document.getElementById('content');
         const htmlContent = raw.outerHTML;
@@ -35,6 +41,7 @@ const kipalogCrawler = async (browser, article) => {
     page.close();
     const articleData = { title, path, tags, htmlContent, textContent, from: `${type}` };
     await articleModel.create(articleData);
+    console.log(getCurrentTime() + chalk.yellow('Done:\t\t') + chalk.green(pageUrl));
     return articleData;
 }
 
diff --git a/crawlers/viblopostCrawler.js b/crawlers/viblopostCrawler.js
new file mode 100644
index 0000000..9d9dd01
--- /dev/null
+++ b/crawlers/viblopostCrawler.js
@@ -0,0 +1,48 @@
+const chalk = require('chalk');
+const showdown = require('showdown');
+
+const converter = new showdown.Converter();
+
+const { articleModel } = require('../models');
+
+const { getCurrentTime } = require('../shared');
+
+const viblopostHomePage = 'https://viblo.asia';
+
+const type = 'viblopost';
+
+const viblopostPaginateUrl = (page = 0) => {
+    return `${viblopostHomePage}/api/posts/newest?page=${page}&limit=20`;
+}
+
+const viblopostCrawler = async (browser, article) => {
+    let { title, url, tags, contents } = article;
+
+    console.log(getCurrentTime() + chalk.yellow('Crawling...\t') + chalk.green(url));
+
+    tags = tags.data;
+
+    if (tags.length !== 0)
+        tags = tags.map(tag => String(tag.name).toLocaleLowerCase().trim().replace(' ', '-')).join(';');
+    else
+        tags = 'none';
+
+    let path = url.replace(viblopostHomePage, '');
+    let textContent = contents;
+    let htmlContent = converter.makeHtml(contents);
+
+    const articleData = { title, path, tags, htmlContent, textContent, from: `${type}` };
+    await articleModel.create(articleData);
+    console.log(getCurrentTime() + chalk.yellow('Done:\t\t') + chalk.green(url));
+    return articleData;
+}
+
+module.exports = {
+    viblopostPaginateUrl,
+    viblopostCrawler,
+    viblopostHomePage,
+    type
+}
+
+// max = 1350
+// https://viblo.asia/api/posts/newest?page=4&limit=20
\ No newline at end of file
diff --git a/package.json b/package.json
index 080a5a1..58c6c32 100644
--- a/package.json
+++ b/package.json
@@ -4,13 +4,17 @@
   "main": "index.js",
   "license": "MIT",
   "scripts": {
-    "start": "node app.js"
+    "start": "node app.js",
+    "db:migrate": "sequelize db:migrate",
+    "db:new": "rm -f development.db && sequelize db:migrate"
   },
   "dependencies": {
     "chalk": "^4.1.0",
     "dotenv": "^8.2.0",
+    "moment": "^2.27.0",
     "puppeteer": "^5.2.1",
     "sequelize": "^6.3.5",
+    "showdown": "^1.9.1",
     "sqlite3": "^5.0.0"
   }
 }
diff --git a/readme.md b/readme.md
index 75aad7f..40676bc 100644
--- a/readme.md
+++ b/readme.md
@@ -22,7 +22,13 @@ yarn install
 ## Migration
 
 ```bash
-sequelize db:migrate
+yarn db:migrate
+```
+
+OR - remove old DB and re-migrate
+
+```bash
+yarn db:new # this command will remove developement.db file & migrate DB !
 ```
 
 ## Start crawling data
diff --git a/shared/index.js b/shared/index.js
new file mode 100644
index 0000000..254ab63
--- /dev/null
+++ b/shared/index.js
@@ -0,0 +1,21 @@
+const moment = require('moment');
+
+function getCurrentTime() {
+    let time = `[${moment().format('DD/MM/YYYY, h:m:s A')}]`;
+    time += time.length < 24 ? '\t\t' : '\t';
+    return time;
+}
+
+function sleep(ms = 1000) {
+    return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+function getRandomInt(min, max) {
+    min = Math.ceil(min);
+    max = Math.floor(max);
+    return Math.floor(Math.random() * (max - min + 1)) + min;
+}
+
+module.exports = {
+    sleep, getRandomInt, getCurrentTime
+}
\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index 3490e4c..14ad78d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -49,6 +49,18 @@ ansi-regex@^3.0.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
   integrity sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=
 
+ansi-regex@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
+  integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
+
+ansi-styles@^3.2.0:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
+  dependencies:
+    color-convert "^1.9.0"
+
 ansi-styles@^4.1.0:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-4.2.1.tgz#90ae75c424d008d2624c5bf29ead3177ebfcf359"
@@ -156,6 +168,11 @@ buffer@^5.2.1, buffer@^5.5.0:
     base64-js "^1.0.2"
     ieee754 "^1.1.4"
 
+camelcase@^5.0.0:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
+  integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
+
 caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
@@ -174,11 +191,27 @@ chownr@^1.1.1:
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
   integrity sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==
 
+cliui@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-5.0.0.tgz#deefcfdb2e800784aa34f46fa08e06851c7bbbc5"
+  integrity sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==
+  dependencies:
+    string-width "^3.1.0"
+    strip-ansi "^5.2.0"
+    wrap-ansi "^5.1.0"
+
 code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
+  dependencies:
+    color-name "1.1.3"
+
 color-convert@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-2.0.1.tgz#72d3a68d598c9bdb3af2ad1e84f21d896abd4de3"
@@ -186,6 +219,11 @@ color-convert@^2.0.1:
   dependencies:
     color-name "~1.1.4"
 
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+
 color-name@~1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.4.tgz#c2a09a87acbde69543de6f63fa3995c826c536a2"
@@ -234,6 +272,11 @@ debug@^3.2.6:
   dependencies:
     ms "^2.1.1"
 
+decamelize@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
+  integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
+
 deep-extend@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
@@ -277,6 +320,11 @@ ecc-jsbn@~0.1.1:
     jsbn "~0.1.0"
     safer-buffer "^2.1.0"
 
+emoji-regex@^7.0.1:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
+  integrity sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==
+
 end-of-stream@^1.1.0, end-of-stream@^1.4.1:
   version "1.4.4"
   resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.4.tgz#5ae64a5f45057baf3626ec14da0ca5e4b2431eb0"
@@ -327,6 +375,13 @@ fd-slicer@~1.1.0:
   dependencies:
     pend "~1.2.0"
 
+find-up@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+  integrity sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==
+  dependencies:
+    locate-path "^3.0.0"
+
 find-up@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-4.1.0.tgz#97afe7d6cdc0bc5928584b7c8d7b16e8a9aa5d19"
@@ -390,6 +445,11 @@ gauge@~2.7.3:
     strip-ansi "^3.0.1"
     wide-align "^1.1.0"
 
+get-caller-file@^2.0.1:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
+  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
+
 get-stream@^5.1.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-5.2.0.tgz#4966a1795ee5ace65e706c4b7beb71257d6e22d3"
@@ -565,6 +625,14 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
+locate-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
+  integrity sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==
+  dependencies:
+    p-locate "^3.0.0"
+    path-exists "^3.0.0"
+
 locate-path@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-5.0.0.tgz#1afba396afd676a6d42504d0a67a3a7eb9f62aa0"
@@ -640,7 +708,7 @@ moment-timezone@^0.5.31:
   dependencies:
     moment ">= 2.9.0"
 
-"moment@>= 2.9.0", moment@^2.26.0:
+"moment@>= 2.9.0", moment@^2.26.0, moment@^2.27.0:
   version "2.27.0"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.27.0.tgz#8bff4e3e26a236220dfe3e36de756b6ebaa0105d"
   integrity sha512-al0MUK7cpIcglMv3YF13qSgdAIqxHTO7brRtaz3DlSULbqfazqkc5kEjNrLDOM7fsjshoFIihnU8snrP7zUvhQ==
@@ -784,13 +852,20 @@ osenv@0, osenv@^0.1.4:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.0"
 
-p-limit@^2.2.0:
+p-limit@^2.0.0, p-limit@^2.2.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.3.0.tgz#3dd33c647a214fdfffd835933eb086da0dc21db1"
   integrity sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==
   dependencies:
     p-try "^2.0.0"
 
+p-locate@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
+  integrity sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==
+  dependencies:
+    p-limit "^2.0.0"
+
 p-locate@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-4.1.0.tgz#a3428bb7088b3a60292f66919278b7c297ad4f07"
@@ -803,6 +878,11 @@ p-try@^2.0.0:
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
   integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
 
+path-exists@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
+  integrity sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=
+
 path-exists@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-4.0.0.tgz#513bdbe2d3b95d7762e8c1137efa195c6c61b5b3"
@@ -944,6 +1024,16 @@ request@^2.87.0:
     tunnel-agent "^0.6.0"
     uuid "^3.3.2"
 
+require-directory@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
+  integrity sha1-jGStX9MNqxyXbiNE/+f3kqam30I=
+
+require-main-filename@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-2.0.0.tgz#d0b329ecc7cc0f61649f62215be69af54aa8989b"
+  integrity sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==
+
 retry-as-promised@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/retry-as-promised/-/retry-as-promised-3.2.0.tgz#769f63d536bec4783549db0777cb56dadd9d8543"
@@ -1024,11 +1114,18 @@ sequelize@^6.3.5:
     validator "^10.11.0"
     wkx "^0.5.0"
 
-set-blocking@~2.0.0:
+set-blocking@^2.0.0, set-blocking@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
   integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
 
+showdown@^1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/showdown/-/showdown-1.9.1.tgz#134e148e75cd4623e09c21b0511977d79b5ad0ef"
+  integrity sha512-9cGuS382HcvExtf5AHk7Cb4pAeQQ+h0eTr33V1mu+crYWV4KvWAw6el92bDrqGEk5d46Ai/fhbEUwqJ/mTCNEA==
+  dependencies:
+    yargs "^14.2"
+
 signal-exit@^3.0.0:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
@@ -1076,6 +1173,15 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^4.0.0"
 
+string-width@^3.0.0, string-width@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-3.1.0.tgz#22767be21b62af1081574306f69ac51b62203961"
+  integrity sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==
+  dependencies:
+    emoji-regex "^7.0.1"
+    is-fullwidth-code-point "^2.0.0"
+    strip-ansi "^5.1.0"
+
 string_decoder@^1.1.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.3.0.tgz#42f114594a46cf1a8e30b0a84f56c78c3edac21e"
@@ -1104,6 +1210,13 @@ strip-ansi@^4.0.0:
   dependencies:
     ansi-regex "^3.0.0"
 
+strip-ansi@^5.0.0, strip-ansi@^5.1.0, strip-ansi@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-5.2.0.tgz#8c9a536feb6afc962bdfa5b104a5091c1ad9c0ae"
+  integrity sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==
+  dependencies:
+    ansi-regex "^4.1.0"
+
 strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
@@ -1233,6 +1346,11 @@ verror@1.10.0:
     core-util-is "1.0.2"
     extsprintf "^1.2.0"
 
+which-module@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
+  integrity sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=
+
 which@1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
@@ -1254,6 +1372,15 @@ wkx@^0.5.0:
   dependencies:
     "@types/node" "*"
 
+wrap-ansi@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-5.1.0.tgz#1fd1f67235d5b6d0fee781056001bfb694c03b09"
+  integrity sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==
+  dependencies:
+    ansi-styles "^3.2.0"
+    string-width "^3.0.0"
+    strip-ansi "^5.0.0"
+
 wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
@@ -1264,11 +1391,41 @@ ws@^7.2.3:
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.3.1.tgz#d0547bf67f7ce4f12a72dfe31262c68d7dc551c8"
   integrity sha512-D3RuNkynyHmEJIpD2qrgVkc9DQ23OrN/moAwZX4L8DfvszsJxpjQuUq3LMx6HoYji9fbIOBY18XWBsAux1ZZUA==
 
+y18n@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
+  integrity sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==
+
 yallist@^3.0.0, yallist@^3.0.3:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
   integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==
 
+yargs-parser@^15.0.1:
+  version "15.0.1"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-15.0.1.tgz#54786af40b820dcb2fb8025b11b4d659d76323b3"
+  integrity sha512-0OAMV2mAZQrs3FkNpDQcBk1x5HXb8X4twADss4S0Iuk+2dGnLOE/fRHrsYm542GduMveyA77OF4wrNJuanRCWw==
+  dependencies:
+    camelcase "^5.0.0"
+    decamelize "^1.2.0"
+
+yargs@^14.2:
+  version "14.2.3"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-14.2.3.tgz#1a1c3edced1afb2a2fea33604bc6d1d8d688a414"
+  integrity sha512-ZbotRWhF+lkjijC/VhmOT9wSgyBQ7+zr13+YLkhfsSiTriYsMzkTUFP18pFhWwBeMa5gUc1MzbhrO6/VB7c9Xg==
+  dependencies:
+    cliui "^5.0.0"
+    decamelize "^1.2.0"
+    find-up "^3.0.0"
+    get-caller-file "^2.0.1"
+    require-directory "^2.1.1"
+    require-main-filename "^2.0.0"
+    set-blocking "^2.0.0"
+    string-width "^3.0.0"
+    which-module "^2.0.0"
+    y18n "^4.0.0"
+    yargs-parser "^15.0.1"
+
 yauzl@^2.10.0:
   version "2.10.0"
   resolved "https://registry.yarnpkg.com/yauzl/-/yauzl-2.10.0.tgz#c7eb17c93e112cb1086fa6d8e51fb0667b79a5f9"