diff --git a/BookStore.Web/package-lock.json b/BookStore.Web/package-lock.json
index a301b54..122a9b4 100644
--- a/BookStore.Web/package-lock.json
+++ b/BookStore.Web/package-lock.json
@@ -157,11 +157,18 @@
       }
     },
     "@angular/core": {
-      "version": "5.2.5",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.5.tgz",
-      "integrity": "sha512-Uo7R3LrsvA24JkRbwXWUZWp7NSEpwdTUxT1NScyjrBK+t8ybSL5/42Jo21md5M4pjeCsIgUXlGoCm1QtT5aYnQ==",
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
       "requires": {
-        "tslib": "^1.7.1"
+        "tslib": "^2.0.0"
+      },
+      "dependencies": {
+        "tslib": {
+          "version": "2.4.0",
+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+          "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+        }
       }
     },
     "@angular/forms": {
diff --git a/BookStore.Web/package.json b/BookStore.Web/package.json
index 811b26f..9d02a14 100644
--- a/BookStore.Web/package.json
+++ b/BookStore.Web/package.json
@@ -16,7 +16,7 @@
     "@angular/animations": "^5.2.11",
     "@angular/common": "^5.2.0",
     "@angular/compiler": "^5.2.0",
-    "@angular/core": "^5.2.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^5.2.0",
     "@angular/http": "^5.2.0",
     "@angular/platform-browser": "^5.2.0",
diff --git a/BookStore.Web/yarn.lock b/BookStore.Web/yarn.lock
index 680d4c8..a345313 100644
--- a/BookStore.Web/yarn.lock
+++ b/BookStore.Web/yarn.lock
@@ -127,12 +127,12 @@
   dependencies:
     tslib "^1.7.1"
 
-"@angular/core@^5.2.0":
-  version "5.2.11"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-5.2.11.tgz#0e38fdf4fa038a3c168c72952682f2ee3721f1a3"
-  integrity sha512-h2vpvXNAdOqKzbVaZcHnHGMT5A8uDnizk6FgGq6SPyw9s3d+/VxZ9LJaPjUk3g2lICA7og1tUel+2YfF971MlQ==
+"@angular/core@^11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
+  integrity sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==
   dependencies:
-    tslib "^1.7.1"
+    tslib "^2.0.0"
 
 "@angular/forms@^5.2.0":
   version "5.2.11"
@@ -183,31 +183,10 @@
   dependencies:
     tslib "^1.7.1"
 
-"@fortawesome/angular-fontawesome@^0.3.0":
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/@fortawesome/angular-fontawesome/-/angular-fontawesome-0.3.0.tgz#380492f186469ce03d6fdbb3ec719810f771bf62"
-  integrity sha512-wXvyPI7GidoNiqeMz2re9iemUMFH4zBmuv94CfXlaanQ8+kMP/fYs/k69PLVN1KsebQY4kRA9GHmc1U1ndBkJg==
-  dependencies:
-    tslib "^1.9.0"
-
-"@fortawesome/fontawesome-common-types@^0.2.18":
-  version "0.2.18"
-  resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-common-types/-/fontawesome-common-types-0.2.18.tgz#c0d8f073a5116b2de0a2c8a7aba66093a6956ce7"
-  integrity sha512-834DrzO2Ne3upCW+mJJPC/E6BsFcj+2Z1HmPIhbpbj8UaKmXWum4NClqLpUiMetugRlHuG4jbIHNdv2/lc3c1Q==
-
-"@fortawesome/fontawesome-svg-core@^1.2.18":
-  version "1.2.18"
-  resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-svg-core/-/fontawesome-svg-core-1.2.18.tgz#c26cbded461895ebe260f0dea771ca29d8cb3517"
-  integrity sha512-1vyLWVQqxQ8q8bA2zgZcljk3RkeELlDJ757ymLk+ebK019AFgEFH5kTnR5OMN1SFsTwW1OHlFQO3VufdeCg/Gg==
-  dependencies:
-    "@fortawesome/fontawesome-common-types" "^0.2.18"
-
-"@fortawesome/free-solid-svg-icons@^5.8.2":
-  version "5.8.2"
-  resolved "https://registry.yarnpkg.com/@fortawesome/free-solid-svg-icons/-/free-solid-svg-icons-5.8.2.tgz#aa2f042f73aca43eb4a26149907e63bf26d2e31c"
-  integrity sha512-5tF6WOFlqqO95zY5ukSB6jliDa3jnk1p5L4K/a58ccDFsbjSkhfGuvZkRkeWxH8uMms81pZd6yQTwQrkedeJmg==
-  dependencies:
-    "@fortawesome/fontawesome-common-types" "^0.2.18"
+"@ng-bootstrap/ng-bootstrap@^2.0.0":
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/@ng-bootstrap/ng-bootstrap/-/ng-bootstrap-2.2.2.tgz#07c64badd48b563140eb5a6327b5516bf2226834"
+  integrity sha512-uqngK1urcevQeF+zgoGW1XDnasjoob4QrwhynNUFpDnnplP1wa+BEUjpSccxU+L2dHLfrOb2sPGEGp8cE2X3Iw==
 
 "@ngtools/json-schema@1.2.0":
   version "1.2.0"
@@ -254,6 +233,19 @@
     semver "^5.3.0"
     semver-intersect "^1.1.2"
 
+"@types/bootstrap@^4.3.0":
+  version "4.6.2"
+  resolved "https://registry.yarnpkg.com/@types/bootstrap/-/bootstrap-4.6.2.tgz#84d4dd3ee41e903c7bc17e47b9997ec804d8d64e"
+  integrity sha512-HbqVAre9VMZF8KBw1UpmBkw0xt4rjrAxMO/JWqFfJZGbVi09t8BVccvB/VxDlygVvvu0BZkAU8ocfNc7/jlFsA==
+  dependencies:
+    "@types/jquery" "*"
+    popper.js "^1.14.1"
+
+"@types/hammerjs@^2.0.36":
+  version "2.0.41"
+  resolved "https://registry.yarnpkg.com/@types/hammerjs/-/hammerjs-2.0.41.tgz#f6ecf57d1b12d2befcce00e928a6a097c22980aa"
+  integrity sha512-ewXv/ceBaJprikMcxCmWU1FKyMAQ2X7a9Gtmzw8fcg2kIePI1crERDM818W+XYrxqdBBOdlf2rm137bU+BltCA==
+
 "@types/jasmine@*":
   version "3.3.12"
   resolved "https://registry.yarnpkg.com/@types/jasmine/-/jasmine-3.3.12.tgz#bf282cb540e9ad7a0a04b742082c073b655eab39"
@@ -271,6 +263,13 @@
   dependencies:
     "@types/jasmine" "*"
 
+"@types/jquery@*", "@types/jquery@^3.3.29":
+  version "3.5.14"
+  resolved "https://registry.yarnpkg.com/@types/jquery/-/jquery-3.5.14.tgz#ac8e11ee591e94d4d58da602cb3a5a8320dee577"
+  integrity sha512-X1gtMRMbziVQkErhTQmSe2jFwwENA/Zr+PprCkF63vFq+Yt5PZ4AlKqgmeNlwgn7dhsXEK888eIW2520EpC+xg==
+  dependencies:
+    "@types/sizzle" "*"
+
 "@types/node@^6.0.46":
   version "6.14.6"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-6.14.6.tgz#31df045b4c7618ff74d84f542fc3d29445dd566b"
@@ -296,6 +295,11 @@
   resolved "https://registry.yarnpkg.com/@types/selenium-webdriver/-/selenium-webdriver-2.53.43.tgz#2de3d718819bc20165754c4a59afb7e9833f6707"
   integrity sha512-UBYHWph6P3tutkbXpW6XYg9ZPbTKjw/YC2hGG1/GEvWwTbvezBUv3h+mmUFw79T3RFPnmedpiXdOBbXX+4l0jg==
 
+"@types/sizzle@*":
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/@types/sizzle/-/sizzle-2.3.3.tgz#ff5e2f1902969d305225a047c8a0fd5c915cebef"
+  integrity sha512-JYM8x9EGF163bEyhdJBpR2QX1R5naCJHC8ucJylJ3w9/CVBaskdQ8WqBf8MmQrd1kRvp/a4TS8HJ+bxzR7ZJYQ==
+
 "@types/strip-bom@^3.0.0":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/strip-bom/-/strip-bom-3.0.0.tgz#14a8ec3956c2e81edb7520790aecf21c290aebd2"
@@ -356,16 +360,6 @@ after@0.8.2:
   resolved "https://registry.yarnpkg.com/after/-/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
   integrity sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=
 
-ag-grid-angular@^20.2.0:
-  version "20.2.0"
-  resolved "https://registry.yarnpkg.com/ag-grid-angular/-/ag-grid-angular-20.2.0.tgz#7ac37ccbe170420c264d3500c0ee5b3a440f7480"
-  integrity sha512-Rh7CKTXz7PvAddbwCP92oRx0Ng60eU6ybDa+qnPijC/MPv0VvNW89JjgxVQp0EVBn6GRnezrHGIVOi6uzyiSqQ==
-
-ag-grid-community@^20.2.0:
-  version "20.2.0"
-  resolved "https://registry.yarnpkg.com/ag-grid-community/-/ag-grid-community-20.2.0.tgz#22f26d53e309b51a156878d180c9ec6f16bc6403"
-  integrity sha512-3oAzg58lenhpyIfZ6dBp6cCE+PEoh0N+OSci2+k5fHROn8PMrginAkygONDd068E2NC+qfmDNRkU2WjPgiH/BA==
-
 agent-base@2:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-2.1.1.tgz#d6de10d5af6132d5bd692427d46fc538539094c7"
@@ -440,21 +434,6 @@ amqplib@^0.5.2:
     safe-buffer "~5.1.2"
     url-parse "~1.4.3"
 
-angular-notifier@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/angular-notifier/-/angular-notifier-4.1.1.tgz#127e6c50acab9fe70e784d0e7f4996860f8f93a0"
-  integrity sha512-QrL5cW3GDjONy6Ack+HIgd3tUf93ztkPT6C551/pqOaE69Ad2YDem+JyBLnlLKBnCFUxhKkSVnv/Ak2HsOrBxQ==
-
-angular2-toaster@^7.0.0:
-  version "7.0.0"
-  resolved "https://registry.yarnpkg.com/angular2-toaster/-/angular2-toaster-7.0.0.tgz#8d72716b6b267cf36576bf77361bb3ab09e9d093"
-  integrity sha512-+nKyzg7X9r9knVghyURR63eXpbvErd/Hm7c7rx/v4gfqI7jNAkWHxO1tikVKEQFoD+au6Fu54LOGhEmXb0ECxg==
-
-angular5-toaster@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/angular5-toaster/-/angular5-toaster-1.0.2.tgz#7a112846f2979d8b9bd2e31f05d8bb320155ef76"
-  integrity sha1-ehEoRvKXnYub0uMfBdi7MgFV73Y=
-
 ansi-html@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/ansi-html/-/ansi-html-0.0.7.tgz#813584021962a9e9e6fd039f940d12f56ca7859e"
@@ -3150,6 +3129,11 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.6:
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.15.tgz#ffb703e1066e8a0eeaa4c8b80ba9253eeefbfb00"
   integrity sha512-6uHUhOPEBgQ24HM+r6b/QwWfZq+yiFcipKFrOFiBEnWdy5sdzYoi+pJeQaPI5qOLRFqWmAXUPQNsielzdLoecA==
 
+hammerjs@^2.0.8:
+  version "2.0.8"
+  resolved "https://registry.yarnpkg.com/hammerjs/-/hammerjs-2.0.8.tgz#04ef77862cff2bb79d30f7692095930222bf60f1"
+  integrity sha512-tSQXBXS/MWQOn/RKckawJ61vvsDpCom87JgxiYdGwHdOa0ht0vzUWDlfioofFCRU0L+6NGDt6XzbgoJvZkMeRQ==
+
 handle-thing@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/handle-thing/-/handle-thing-2.0.0.tgz#0e039695ff50c93fc288557d696f3c1dc6776754"
@@ -3541,6 +3525,16 @@ iferr@^0.1.5:
   resolved "https://registry.yarnpkg.com/iferr/-/iferr-0.1.5.tgz#c60eed69e6d8fdb6b3104a1fcbca1c192dc5b501"
   integrity sha1-xg7taebY/bazEEofy8ocGS3FtQE=
 
+igniteui-angular@^7.3.0:
+  version "7.3.21"
+  resolved "https://registry.yarnpkg.com/igniteui-angular/-/igniteui-angular-7.3.21.tgz#5ff2de4ee900477ffcdc55edb1bbcbfced3dea8a"
+  integrity sha512-QmxUFxAV5ojKJrQxU2eTi6v40gyCR4p5VAK9trkS3MsfXbd0vBGqH5TErggYPRQSYW/edomvPKnxLYc6269bsw==
+  dependencies:
+    "@types/hammerjs" "^2.0.36"
+    hammerjs "^2.0.8"
+    jszip "^3.1.5"
+    tslib "^1.9.0"
+
 ignore-walk@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/ignore-walk/-/ignore-walk-3.0.1.tgz#a83e62e7d272ac0e3b551aaa82831a19b69f82f8"
@@ -3558,6 +3552,11 @@ image-size@~0.5.0:
   resolved "https://registry.yarnpkg.com/image-size/-/image-size-0.5.5.tgz#09dfd4ab9d20e29eb1c3e80b8990378df9e3cb9c"
   integrity sha1-Cd/Uq50g4p6xw+gLiZA3jfnjy5w=
 
+immediate@~3.0.5:
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/immediate/-/immediate-3.0.6.tgz#9db1dbd0faf8de6fbe0f5dd5e56bb606280de69b"
+  integrity sha512-XXOFtyqDjNDAQxVfYxuF7g9Il/IbWmmlQg2MYKOH8ExIT1qg6xc4zyS3HaEEATgs1btfzxq15ciUiY7gjSXRGQ==
+
 import-cwd@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/import-cwd/-/import-cwd-2.1.0.tgz#aa6cf36e722761285cb371ec6519f53e2435b0a9"
@@ -4109,10 +4108,10 @@ jasminewd2@^2.1.0:
   resolved "https://registry.yarnpkg.com/jasminewd2/-/jasminewd2-2.2.0.tgz#e37cf0b17f199cce23bea71b2039395246b4ec4e"
   integrity sha1-43zwsX8ZnM4jvqcbIDk5Uka07E4=
 
-jquery@>=1.12.0:
-  version "3.4.1"
-  resolved "https://registry.yarnpkg.com/jquery/-/jquery-3.4.1.tgz#714f1f8d9dde4bdfa55764ba37ef214630d80ef2"
-  integrity sha512-36+AdBzCL+y6qjw5Tx7HgzeGCzC81MDDgaUP8ld2zhx58HdqXGoBd+tHdrBMiyjGQs0Hxs/MLZTu/eHNJJuWPw==
+jquery@^3.4.1:
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/jquery/-/jquery-3.6.0.tgz#c72a09f15c1bdce142f49dbf1170bdf8adac2470"
+  integrity sha512-JVzAR/AjBvVt2BmYhxRCSYysDsPcssdmTFnzyLEts9qNwmjmu4JTAMYubEfwVOSwpQ1I1sKKFcxhZCI2buerfw==
 
 js-base64@^2.1.8:
   version "2.5.1"
@@ -4233,6 +4232,16 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
+jszip@^3.1.5:
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/jszip/-/jszip-3.10.0.tgz#faf3db2b4b8515425e34effcdbb086750a346061"
+  integrity sha512-LDfVtOLtOxb9RXkYOwPyNBTQDL4eUbqahtoY6x07GiDJHwSYvn8sHHIw8wINImV3MqbMNve2gSuM1DDqEKk09Q==
+  dependencies:
+    lie "~3.3.0"
+    pako "~1.0.2"
+    readable-stream "~2.3.6"
+    setimmediate "^1.0.5"
+
 karma-chrome-launcher@~2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/karma-chrome-launcher/-/karma-chrome-launcher-2.2.0.tgz#cf1b9d07136cc18fe239327d24654c3dbc368acf"
@@ -4399,6 +4408,13 @@ license-webpack-plugin@^1.0.0:
   dependencies:
     ejs "^2.5.7"
 
+lie@~3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/lie/-/lie-3.3.0.tgz#dcf82dee545f46074daf200c7c1c5a08e0f40f6a"
+  integrity sha512-UaiMJzeWRlEujzAuw5LokY1L5ecNQYZKfmyZ9L7wDHb/p5etKaxXhohBcrw0EYby+G/NA52vRSN4N39dxHAIwQ==
+  dependencies:
+    immediate "~3.0.5"
+
 load-json-file@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
@@ -4912,14 +4928,7 @@ next-tick@^1.0.0:
   resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
   integrity sha1-yobR/ogoFpsBICCOPchCS524NCw=
 
-ng6-toastr-notifications@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/ng6-toastr-notifications/-/ng6-toastr-notifications-1.0.4.tgz#9a0cb96d915f8fa2f58dffdcfb124d8b0c86b5f6"
-  integrity sha512-5miEItoUOhnQfawBRqKyO2+h/C4k/53vWx3QniOl4dMHL8KqHCsccBCSuHyLpHC2ZYxIXXJLI8ArbeLI4L12Uw==
-  dependencies:
-    tslib "^1.9.0"
-
-ngx-toastr@^6.4.1-beta.0:
+ngx-toastr@^6.5.0:
   version "6.5.0"
   resolved "https://registry.yarnpkg.com/ngx-toastr/-/ngx-toastr-6.5.0.tgz#d6a528b3229bf3a4d570c0e7523a3391b87dc4ef"
   integrity sha512-7aJcNShznNpxNOR90JutJfab6QhDFqMWPe5mREeLdxZVtGbYGWJebuv2LZOg4Qh5wxOzNGNsozzVH6IO2WsK9Q==
@@ -5409,6 +5418,11 @@ pac-resolver@^3.0.0:
     netmask "^1.0.6"
     thunkify "^2.1.2"
 
+pako@~1.0.2:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.11.tgz#6c9599d340d54dfd3946380252a35705a6b992bf"
+  integrity sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw==
+
 pako@~1.0.5:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.10.tgz#4328badb5086a426aa90f541977d4955da5c9732"
@@ -5623,6 +5637,11 @@ pkg-dir@^2.0.0:
   dependencies:
     find-up "^2.1.0"
 
+popper.js@^1.14.1:
+  version "1.16.1"
+  resolved "https://registry.yarnpkg.com/popper.js/-/popper.js-1.16.1.tgz#2a223cb3dc7b6213d740e40372be40de43e65b1b"
+  integrity sha512-Wb4p1J4zyFTbM+u6WuO4XstYx4Ky9Cewe4DWrel7B0w6VVICvPwdOpotjzcf6eD8TsckVnIMNONQyPIUFOUbCQ==
+
 portfinder@^1.0.9, portfinder@~1.0.12:
   version "1.0.20"
   resolved "https://registry.yarnpkg.com/portfinder/-/portfinder-1.0.20.tgz#bea68632e54b2e13ab7b0c4775e9b41bf270e44a"
@@ -6571,7 +6590,7 @@ set-value@^2.0.0:
     is-plain-object "^2.0.3"
     split-string "^3.0.1"
 
-setimmediate@^1.0.4:
+setimmediate@^1.0.4, setimmediate@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
   integrity sha1-KQy7Iy4waULX1+qbg3Mqt4VvgoU=
@@ -7273,13 +7292,6 @@ to-regex@^3.0.1, to-regex@^3.0.2:
     regex-not "^1.0.2"
     safe-regex "^1.1.0"
 
-toastr@^2.1.4:
-  version "2.1.4"
-  resolved "https://registry.yarnpkg.com/toastr/-/toastr-2.1.4.tgz#8b43be64fb9d0c414871446f2db8e8ca4e95f181"
-  integrity sha1-i0O+ZPudDEFIcURvLbjoyk6V8YE=
-  dependencies:
-    jquery ">=1.12.0"
-
 toidentifier@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
@@ -7368,6 +7380,11 @@ tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
   integrity sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+  integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==
+
 tslint@~5.9.1:
   version "5.9.1"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.9.1.tgz#1255f87a3ff57eb0b0e1f0e610a8b4748046c9ae"