diff --git a/gulpfile.js b/gulpfile.js
index f5de18752b..247a8dc6f7 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -5,6 +5,7 @@ const package = require('./package.json');
 const fs = require('fs');
 
 const paths = {
+    node_modules: './node_modules/',
     src: './src/',
     build: './build/',
     cssDir: './src/css/',
@@ -29,8 +30,17 @@ function version(cb) {
     cb();
 }
 
+// ref: https://github.com/t4t5/sweetalert/issues/890
+function fixSweetAlert(cb) {
+    fs.writeFileSync(paths.node_modules + 'sweetalert/typings/sweetalert.d.ts',
+        'import swal, { SweetAlert } from "./core";export default swal;export as namespace swal;');
+    cb();
+}
+
 exports.clean = clean;
 exports.webfonts = gulp.series(clean, webfonts);
 exports.prebuild = gulp.series(clean, webfonts);
 exports.version = version;
 exports.postdist = version;
+exports.fixSweetAlert = fixSweetAlert;
+exports.postinstall = fixSweetAlert;
diff --git a/package-lock.json b/package-lock.json
index 02276310d1..f26bc788bb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3361,15 +3361,30 @@
         "webpack-sources": "^1.1.0"
       },
       "dependencies": {
-        "loader-utils": {
-          "version": "1.1.0",
-          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-1.1.0.tgz",
-          "integrity": "sha1-yYrvSIvM7aL/teLeZG1qdUQp9c0=",
+        "big.js": {
+          "version": "5.2.2",
+          "resolved": "https://registry.npmjs.org/big.js/-/big.js-5.2.2.tgz",
+          "integrity": "sha512-vyL2OymJxmarO8gxMr0mhChsO9QGwhynfuu4+MHTAW6czfq9humCB7rKpUjDd9YUiDPU4mzpyupFSvOClAwbmQ==",
+          "dev": true
+        },
+        "json5": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
+          "integrity": "sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==",
           "dev": true,
           "requires": {
-            "big.js": "^3.1.3",
+            "minimist": "^1.2.0"
+          }
+        },
+        "loader-utils": {
+          "version": "1.2.3",
+          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-1.2.3.tgz",
+          "integrity": "sha512-fkpz8ejdnEMG3s37wGL07iSBDg99O9D5yflE9RGNH3hRdx9SOwYfnGYdZOUIZitN8E+E2vkq3MUMYMvPYl5ZZA==",
+          "dev": true,
+          "requires": {
+            "big.js": "^5.2.2",
             "emojis-list": "^2.0.0",
-            "json5": "^0.5.0"
+            "json5": "^1.0.1"
           }
         }
       }
@@ -4052,14 +4067,12 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -4074,20 +4087,17 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -4204,8 +4214,7 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "ini": {
           "version": "1.3.5",
@@ -4217,7 +4226,6 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -4232,7 +4240,6 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -4344,8 +4351,7 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -4357,7 +4363,6 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -4479,7 +4484,6 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -10133,9 +10137,9 @@
       }
     },
     "sweetalert": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/sweetalert/-/sweetalert-2.1.0.tgz",
-      "integrity": "sha512-9YKj0SvjKyBfRWco50UOsIbXVeifYbxzT9Qda7EsqC01eafHGCSG0IR7g942ufjzt7lnwO8ZZBwr6emXv2fQrg==",
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/sweetalert/-/sweetalert-2.1.2.tgz",
+      "integrity": "sha512-iWx7X4anRBNDa/a+AdTmvAzQtkN1+s4j/JJRWlHpYE8Qimkohs8/XnFcWeYHH2lMA8LRCa5tj2d244If3S/hzA==",
       "requires": {
         "es6-object-assign": "^1.1.0",
         "promise-polyfill": "^6.0.2"
diff --git a/package.json b/package.json
index b0facf62aa..d61929326d 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
     "sub:init": "git submodule update --init --recursive",
     "sub:update": "git submodule update --remote",
     "sub:pull": "git submodule foreach git pull",
-    "postinstall": "npm run sub:init",
+    "postinstall": "npm run sub:init && gulp postinstall",
     "build": "gulp prebuild && webpack",
     "build:watch": "gulp prebuild && webpack-dev-server",
     "build:prod": "gulp prebuild && cross-env NODE_ENV=production webpack",
@@ -85,7 +85,7 @@
     "popper.js": "1.14.4",
     "qrious": "4.0.2",
     "rxjs": "6.3.3",
-    "sweetalert": "2.1.0",
+    "sweetalert": "2.1.2",
     "web-animations-js": "2.3.1",
     "webcrypto-shim": "0.1.4",
     "whatwg-fetch": "3.0.0",