diff --git a/package-lock.json b/package-lock.json
index 7adb16b..0ad1380 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "vue-awesome-drag",
-  "version": "1.0.0",
+  "version": "1.0.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -633,12 +633,6 @@
       "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
       "dev": true
     },
-    "ansi-colors": {
-      "version": "3.2.4",
-      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.4.tgz",
-      "integrity": "sha512-hHUXGagefjN2iRrID63xckIvotOXOojhQKWIPUZ4mNUZ9nLZW+7FMNoE1lOkEhNWYsx/7ysGIuJYCiMAA9FnrA==",
-      "dev": true
-    },
     "ansi-escapes": {
       "version": "4.3.1",
       "resolved": "https://registry.npm.taobao.org/ansi-escapes/download/ansi-escapes-4.3.1.tgz",
@@ -747,12 +741,6 @@
       "integrity": "sha1-t5hCCtvrHego2ErNii4j0+/oXo0=",
       "dev": true
     },
-    "array-uniq": {
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-      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=",
-      "dev": true
-    },
     "array-unique": {
       "version": "0.3.2",
       "resolved": "https://registry.npm.taobao.org/array-unique/download/array-unique-0.3.2.tgz",
@@ -1391,15 +1379,36 @@
       }
     },
     "browserslist": {
-      "version": "4.11.1",
-      "resolved": "https://registry.npm.taobao.org/browserslist/download/browserslist-4.11.1.tgz",
-      "integrity": "sha1-kvhV7ojW4FDn5zEdmHmSAU8aHxs=",
+      "version": "4.16.6",
+      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.16.6.tgz",
+      "integrity": "sha512-Wspk/PqO+4W9qp5iUTJsa1B/QrYn1keNCcEP5OvP7WBwT4KaDly0uONYmC6Xa3Z5IqnUgS0KcgLYu1l74x0ZXQ==",
       "dev": true,
       "requires": {
-        "caniuse-lite": "^1.0.30001038",
-        "electron-to-chromium": "^1.3.390",
-        "node-releases": "^1.1.53",
-        "pkg-up": "^2.0.0"
+        "caniuse-lite": "^1.0.30001219",
+        "colorette": "^1.2.2",
+        "electron-to-chromium": "^1.3.723",
+        "escalade": "^3.1.1",
+        "node-releases": "^1.1.71"
+      },
+      "dependencies": {
+        "caniuse-lite": {
+          "version": "1.0.30001230",
+          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001230.tgz",
+          "integrity": "sha512-5yBd5nWCBS+jWKTcHOzXwo5xzcj4ePE/yjtkZyUV1BTUmrBaA9MRGC+e7mxnqXSA90CmCA8L3eKLaSUkt099IQ==",
+          "dev": true
+        },
+        "electron-to-chromium": {
+          "version": "1.3.739",
+          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.739.tgz",
+          "integrity": "sha512-+LPJVRsN7hGZ9EIUUiWCpO7l4E3qBYHNadazlucBfsXBbccDFNKUBAgzE68FnkWGJPwD/AfKhSzL+G+Iqb8A4A==",
+          "dev": true
+        },
+        "node-releases": {
+          "version": "1.1.72",
+          "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.72.tgz",
+          "integrity": "sha512-LLUo+PpH3dU6XizX3iVoubUNheF/owjXCZZ5yACDxNnPtgFuludV1ZL3ayK1kVep42Rmm0+R9/Y60NQbZ2bifw==",
+          "dev": true
+        }
       }
     },
     "buffer": {
@@ -1711,6 +1720,12 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
+    "colorette": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz",
+      "integrity": "sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==",
+      "dev": true
+    },
     "combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npm.taobao.org/combined-stream/download/combined-stream-1.0.8.tgz",
@@ -1812,81 +1827,6 @@
       "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
       "dev": true
     },
-    "copy-webpack-plugin": {
-      "version": "5.1.1",
-      "resolved": "https://registry.npmjs.org/copy-webpack-plugin/-/copy-webpack-plugin-5.1.1.tgz",
-      "integrity": "sha512-P15M5ZC8dyCjQHWwd4Ia/dm0SgVvZJMYeykVIVYXbGyqO4dWB5oyPHp9i7wjwo5LhtlhKbiBCdS2NvM07Wlybg==",
-      "dev": true,
-      "requires": {
-        "cacache": "^12.0.3",
-        "find-cache-dir": "^2.1.0",
-        "glob-parent": "^3.1.0",
-        "globby": "^7.1.1",
-        "is-glob": "^4.0.1",
-        "loader-utils": "^1.2.3",
-        "minimatch": "^3.0.4",
-        "normalize-path": "^3.0.0",
-        "p-limit": "^2.2.1",
-        "schema-utils": "^1.0.0",
-        "serialize-javascript": "^2.1.2",
-        "webpack-log": "^2.0.0"
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-      "dependencies": {
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-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
-          "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
-          "dev": true,
-          "requires": {
-            "array-uniq": "^1.0.1"
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-        },
-        "dir-glob": {
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-          "resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-2.2.2.tgz",
-          "integrity": "sha512-f9LBi5QWzIW3I6e//uxZoLBlUt9kcp66qo0sSCxL6YZKc75R1c4MFCoe/LaZiBGmgujvQdxc5Bn3QhfyvK5Hsw==",
-          "dev": true,
-          "requires": {
-            "path-type": "^3.0.0"
-          }
-        },
-        "globby": {
-          "version": "7.1.1",
-          "resolved": "https://registry.npmjs.org/globby/-/globby-7.1.1.tgz",
-          "integrity": "sha1-+yzP+UAfhgCUXfral0QMypcrhoA=",
-          "dev": true,
-          "requires": {
-            "array-union": "^1.0.1",
-            "dir-glob": "^2.0.0",
-            "glob": "^7.1.2",
-            "ignore": "^3.3.5",
-            "pify": "^3.0.0",
-            "slash": "^1.0.0"
-          }
-        },
-        "ignore": {
-          "version": "3.3.10",
-          "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-          "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-          "dev": true
-        },
-        "path-type": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/path-type/-/path-type-3.0.0.tgz",
-          "integrity": "sha512-T2ZUsdZFHgA3u4e5PfPbjd7HDDpxPnQb5jN0SrDsjNSuVXHJqtwTnWqG0B1jZrgmJ/7lj1EmVIByWt1gxGkWvg==",
-          "dev": true,
-          "requires": {
-            "pify": "^3.0.0"
-          }
-        },
-        "pify": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
-          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
-          "dev": true
-        }
-      }
-    },
     "core-js": {
       "version": "2.6.11",
       "resolved": "https://registry.npm.taobao.org/core-js/download/core-js-2.6.11.tgz?cache=0&sync_timestamp=1578957006406&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fcore-js%2Fdownload%2Fcore-js-2.6.11.tgz",
@@ -2350,12 +2290,6 @@
         "safer-buffer": "^2.1.0"
       }
     },
-    "electron-to-chromium": {
-      "version": "1.3.397",
-      "resolved": "https://registry.npm.taobao.org/electron-to-chromium/download/electron-to-chromium-1.3.397.tgz",
-      "integrity": "sha1-22QMLmewjVkKUEwgtWkEU3qiuvo=",
-      "dev": true
-    },
     "elliptic": {
       "version": "6.5.2",
       "resolved": "https://registry.npm.taobao.org/elliptic/download/elliptic-6.5.2.tgz",
@@ -2439,6 +2373,12 @@
         "is-arrayish": "^0.2.1"
       }
     },
+    "escalade": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
+      "integrity": "sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==",
+      "dev": true
+    },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npm.taobao.org/escape-string-regexp/download/escape-string-regexp-1.0.5.tgz",
@@ -5420,12 +5360,6 @@
         }
       }
     },
-    "node-releases": {
-      "version": "1.1.53",
-      "resolved": "https://registry.npm.taobao.org/node-releases/download/node-releases-1.1.53.tgz",
-      "integrity": "sha1-LYIb+kme18Xf/F4vKMiOeKCO4/Q=",
-      "dev": true
-    },
     "node-sass": {
       "version": "4.13.1",
       "resolved": "https://registry.npm.taobao.org/node-sass/download/node-sass-4.13.1.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fnode-sass%2Fdownload%2Fnode-sass-4.13.1.tgz",
@@ -5956,60 +5890,6 @@
         "find-up": "^3.0.0"
       }
     },
-    "pkg-up": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npm.taobao.org/pkg-up/download/pkg-up-2.0.0.tgz",
-      "integrity": "sha1-yBmscoBZpGHKscOImivjxJoATX8=",
-      "dev": true,
-      "requires": {
-        "find-up": "^2.1.0"
-      },
-      "dependencies": {
-        "find-up": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npm.taobao.org/find-up/download/find-up-2.1.0.tgz",
-          "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
-          "dev": true,
-          "requires": {
-            "locate-path": "^2.0.0"
-          }
-        },
-        "locate-path": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npm.taobao.org/locate-path/download/locate-path-2.0.0.tgz",
-          "integrity": "sha1-K1aLJl7slExtnA3pw9u7ygNUzY4=",
-          "dev": true,
-          "requires": {
-            "p-locate": "^2.0.0",
-            "path-exists": "^3.0.0"
-          }
-        },
-        "p-limit": {
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-          "resolved": "https://registry.npm.taobao.org/p-limit/download/p-limit-1.3.0.tgz",
-          "integrity": "sha1-uGvV8MJWkJEcdZD8v8IBDVSzzLg=",
-          "dev": true,
-          "requires": {
-            "p-try": "^1.0.0"
-          }
-        },
-        "p-locate": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npm.taobao.org/p-locate/download/p-locate-2.0.0.tgz",
-          "integrity": "sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=",
-          "dev": true,
-          "requires": {
-            "p-limit": "^1.1.0"
-          }
-        },
-        "p-try": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npm.taobao.org/p-try/download/p-try-1.0.0.tgz",
-          "integrity": "sha1-y8ec26+P1CKOE/Yh8rGiN8GyB7M=",
-          "dev": true
-        }
-      }
-    },
     "posix-character-classes": {
       "version": "0.1.1",
       "resolved": "https://registry.npm.taobao.org/posix-character-classes/download/posix-character-classes-0.1.1.tgz",
@@ -8703,16 +8583,6 @@
         }
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-    "webpack-log": {
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-      "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
-      "integrity": "sha512-cX8G2vR/85UYG59FgkoMamwHUIkSSlV3bBMRsbxVXVUk2j6NleCKjQ/WE9eYg9WY4w25O9w8wKP4rzNZFmUcUg==",
-      "dev": true,
-      "requires": {
-        "ansi-colors": "^3.0.0",
-        "uuid": "^3.3.2"
-      }
-    },
     "webpack-sources": {
       "version": "1.4.3",
       "resolved": "https://registry.npm.taobao.org/webpack-sources/download/webpack-sources-1.4.3.tgz",