diff --git a/package-lock.json b/package-lock.json
index 81b0605..9d5e8c0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@blocklang/page-designer",
-  "version": "0.0.3-alpha.32",
+  "version": "0.0.3-alpha.33",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -3305,12 +3305,40 @@
         "glob-to-regexp": "^0.3.0"
       }
     },
+    "@nodelib/fs.scandir": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
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+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "2.0.5",
+        "run-parallel": "^1.1.9"
+      },
+      "dependencies": {
+        "@nodelib/fs.stat": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz",
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+          "dev": true
+        }
+      }
+    },
     "@nodelib/fs.stat": {
       "version": "1.1.3",
       "resolved": "https://registry.npm.taobao.org/@nodelib/fs.stat/download/@nodelib/fs.stat-1.1.3.tgz",
       "integrity": "sha1-K1o6s/kYzKSKjHVMCBaOPwPrphs=",
       "dev": true
     },
+    "@nodelib/fs.walk": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.7.tgz",
+      "integrity": "sha512-BTIhocbPBSrRmHxOAJFtR18oLhxTtAFDAvL8hY1S3iU8k+E60W/YFs4jrixGzQjMpF4qPXxIQHcjVD9dz1C2QA==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.scandir": "2.1.5",
+        "fastq": "^1.6.0"
+      }
+    },
     "@npmcli/move-file": {
       "version": "1.0.1",
       "resolved": "https://registry.npm.taobao.org/@npmcli/move-file/download/@npmcli/move-file-1.0.1.tgz",
@@ -3540,12 +3568,6 @@
         "@types/node": "*"
       }
     },
-    "@types/eslint-visitor-keys": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/@types/eslint-visitor-keys/download/@types/eslint-visitor-keys-1.0.0.tgz",
-      "integrity": "sha1-HuMNeVRMqE1o1LPNsK9PIFZj3S0=",
-      "dev": true
-    },
     "@types/events": {
       "version": "3.0.0",
       "resolved": "https://registry.npm.taobao.org/@types/events/download/@types/events-3.0.0.tgz",
@@ -3853,78 +3875,126 @@
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     "@typescript-eslint/eslint-plugin": {
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-      "resolved": "https://registry.npm.taobao.org/@typescript-eslint/eslint-plugin/download/@typescript-eslint/eslint-plugin-3.10.1.tgz",
-      "integrity": "sha1-fgYTOKE4P1ntwgTGBYmfk9wuLI8=",
+      "version": "4.26.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.26.0.tgz",
+      "integrity": "sha512-yA7IWp+5Qqf+TLbd8b35ySFOFzUfL7i+4If50EqvjT6w35X8Lv0eBHb6rATeWmucks37w+zV+tWnOXI9JlG6Eg==",
       "dev": true,
       "requires": {
-        "@typescript-eslint/experimental-utils": "3.10.1",
-        "debug": "^4.1.1",
+        "@typescript-eslint/experimental-utils": "4.26.0",
+        "@typescript-eslint/scope-manager": "4.26.0",
+        "debug": "^4.3.1",
         "functional-red-black-tree": "^1.0.1",
-        "regexpp": "^3.0.0",
-        "semver": "^7.3.2",
-        "tsutils": "^3.17.1"
+        "lodash": "^4.17.21",
+        "regexpp": "^3.1.0",
+        "semver": "^7.3.5",
+        "tsutils": "^3.21.0"
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       "dependencies": {
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-          "resolved": "https://registry.npm.taobao.org/debug/download/debug-4.2.0.tgz?cache=0&sync_timestamp=1600502855763&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fdebug%2Fdownload%2Fdebug-4.2.0.tgz",
-          "integrity": "sha1-fxUPk5IOlMWPVXTC/QGjEQ7/5/E=",
+          "version": "4.3.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
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-        "semver": {
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-          "resolved": "https://registry.npm.taobao.org/semver/download/semver-7.3.2.tgz?cache=0&sync_timestamp=1586886301819&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsemver%2Fdownload%2Fsemver-7.3.2.tgz",
-          "integrity": "sha1-YElisFK4HtB4aq6EOJ/7pw/9OTg=",
+        "lodash": {
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+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
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+        "lru-cache": {
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+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "dev": true,
+          "requires": {
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+          }
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+        "semver": {
+          "version": "7.3.5",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.5.tgz",
+          "integrity": "sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==",
+          "dev": true,
+          "requires": {
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+        },
         "tslib": {
           "version": "1.14.1",
-          "resolved": "https://registry.npm.taobao.org/tslib/download/tslib-1.14.1.tgz?cache=0&sync_timestamp=1602286854330&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ftslib%2Fdownload%2Ftslib-1.14.1.tgz",
-          "integrity": "sha1-zy04vcNKE0vK8QkcQfZhni9nLQA=",
+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
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-          "resolved": "https://registry.npm.taobao.org/tsutils/download/tsutils-3.17.1.tgz",
-          "integrity": "sha1-7XGZF/EcoN7lhicrKsSeAVot11k=",
+          "version": "3.21.0",
+          "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-3.21.0.tgz",
+          "integrity": "sha512-mHKK3iUXL+3UF6xL5k0PEhKRUBKPBCv/+RkEOpjRWxxx27KKRBmmA60A9pgOUvMi8GKhRMPEmjBRPzs2W7O1OA==",
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+          "dev": true
         }
       }
     },
     "@typescript-eslint/experimental-utils": {
-      "version": "3.10.1",
-      "resolved": "https://registry.npm.taobao.org/@typescript-eslint/experimental-utils/download/@typescript-eslint/experimental-utils-3.10.1.tgz?cache=0&sync_timestamp=1605034781414&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40typescript-eslint%2Fexperimental-utils%2Fdownload%2F%40typescript-eslint%2Fexperimental-utils-3.10.1.tgz",
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-        "eslint-scope": "^5.0.0",
-        "eslint-utils": "^2.0.0"
+        "@types/json-schema": "^7.0.7",
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+        "eslint-utils": "^3.0.0"
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+          "dev": true
+        },
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-          "resolved": "https://registry.npm.taobao.org/eslint-scope/download/eslint-scope-5.1.1.tgz?cache=0&sync_timestamp=1599933675196&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Feslint-scope%2Fdownload%2Feslint-scope-5.1.1.tgz",
-          "integrity": "sha1-54blmmbLkrP2wfsNUIqrF0hI9Iw=",
+          "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-5.1.1.tgz",
+          "integrity": "sha512-2NxwbF/hZ0KpepYN0cNbo+FN6XoK7GaHlQhgx/hIZl6Va0bF45RQOOwhLIy8lQDbuCiadSLCBnH2CFYquit5bw==",
           "dev": true,
           "requires": {
             "esrecurse": "^4.3.0",
             "estraverse": "^4.1.1"
           }
         },
+        "eslint-utils": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/eslint-utils/-/eslint-utils-3.0.0.tgz",
+          "integrity": "sha512-uuQC43IGctw68pJA1RgbQS8/NP7rch6Cwd4j3ZBtgo4/8Flj4eGE7ZYSZRN3iq5pVUv6GPdW5Z1RFleo84uLDA==",
+          "dev": true,
+          "requires": {
+            "eslint-visitor-keys": "^2.0.0"
+          }
+        },
+        "eslint-visitor-keys": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-2.1.0.tgz",
+          "integrity": "sha512-0rSmRBzXgDzIsD6mGdJgevzgezI534Cer5L/vyMX0kHzT/jiB43jRhd9YUlMGYLQy2zprNmoT8qasCGtY+QaKw==",
+          "dev": true
+        },
         "esrecurse": {
           "version": "4.3.0",
-          "resolved": "https://registry.npm.taobao.org/esrecurse/download/esrecurse-4.3.0.tgz",
-          "integrity": "sha1-eteWTWeauyi+5yzsY3WLHF0smSE=",
+          "resolved": "https://registry.npmjs.org/esrecurse/-/esrecurse-4.3.0.tgz",
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@@ -3932,8 +4002,8 @@
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-              "resolved": "https://registry.npm.taobao.org/estraverse/download/estraverse-5.2.0.tgz?cache=0&sync_timestamp=1596643087695&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Festraverse%2Fdownload%2Festraverse-5.2.0.tgz",
-              "integrity": "sha1-MH30JUfmzHMk088DwVXVzbjFOIA=",
+              "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-5.2.0.tgz",
+              "integrity": "sha512-BxbNGGNm0RyRYvUdHpIwv9IWzeM9XClbOxwoATuFdOE7ZE6wHL+HQ5T8hoPM+zHvmKzzsEqhgy0GrQ5X13afiQ==",
               "dev": true
             }
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@@ -3941,93 +4011,252 @@
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-      "resolved": "https://registry.npm.taobao.org/@typescript-eslint/parser/download/@typescript-eslint/parser-3.10.1.tgz?cache=0&sync_timestamp=1605034782147&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40typescript-eslint%2Fparser%2Fdownload%2F%40typescript-eslint%2Fparser-3.10.1.tgz",
-      "integrity": "sha1-GIOFjoPotEJifhrG9AiSUhEVVGc=",
+      "version": "4.26.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-4.26.0.tgz",
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-        "@typescript-eslint/typescript-estree": "3.10.1",
-        "eslint-visitor-keys": "^1.1.0"
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+        "@typescript-eslint/typescript-estree": "4.26.0",
+        "debug": "^4.3.1"
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     "@typescript-eslint/visitor-keys": {
-      "version": "3.10.1",
-      "resolved": "https://registry.npm.taobao.org/@typescript-eslint/visitor-keys/download/@typescript-eslint/visitor-keys-3.10.1.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40typescript-eslint%2Fvisitor-keys%2Fdownload%2F%40typescript-eslint%2Fvisitor-keys-3.10.1.tgz",
-      "integrity": "sha1-zUJ0dz4+tjsuhwrGAidEh+zR6TE=",
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       "dev": true,
       "requires": {
-        "eslint-visitor-keys": "^1.1.0"
+        "@typescript-eslint/types": "4.26.0",
+        "eslint-visitor-keys": "^2.0.0"
+      },
+      "dependencies": {
+        "eslint-visitor-keys": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-2.1.0.tgz",
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+        }
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     },
     "@webassemblyjs/ast": {
@@ -9318,6 +9547,15 @@
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       "dev": true
     },
+    "fastq": {
+      "version": "1.11.0",
+      "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.11.0.tgz",
+      "integrity": "sha512-7Eczs8gIPDrVzT+EksYBcupqMyxSHXXrHOLRRxU2/DicV8789MRBRR8+Hc2uWzUupOs4YS4JzBmBxjjCVBxD/g==",
+      "dev": true,
+      "requires": {
+        "reusify": "^1.0.4"
+      }
+    },
     "fd-slicer": {
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       "resolved": "https://registry.npm.taobao.org/fd-slicer/download/fd-slicer-1.1.0.tgz",
@@ -17375,6 +17613,12 @@
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       "dev": true
     },
+    "queue-microtask": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
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+      "dev": true
+    },
     "quick-lru": {
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       "resolved": "https://registry.npm.taobao.org/quick-lru/download/quick-lru-4.0.1.tgz",
@@ -18147,6 +18391,12 @@
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       "dev": true
     },
+    "reusify": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",
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+    },
     "rgb-regex": {
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       "resolved": "https://registry.npm.taobao.org/rgb-regex/download/rgb-regex-1.0.1.tgz",
@@ -18208,6 +18458,15 @@
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+      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
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diff --git a/package.json b/package.json
index 8e3316e..3368740 100644
--- a/package.json
+++ b/package.json
@@ -58,8 +58,8 @@
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     "@types/sinon": "^9.0.9",
-    "@typescript-eslint/eslint-plugin": "^3.10.1",
-    "@typescript-eslint/parser": "^3.10.1",
+    "@typescript-eslint/eslint-plugin": "4.26.0",
+    "@typescript-eslint/parser": "4.26.0",
     "@types/bootstrap": "^5.0.1",
     "bootstrap": "^5.0.0-beta1",
     "codecov": "^3.8.1",