5 files changed, 711 insertions, 469 deletions

diff --git a/readme.md b/readme.md
index 831ecf8..1fede70 100644
--- a/readme.md
+++ b/readme.md
@@ -55,10 +55,8 @@ Builds of this software embed and make use of the following libraries:
   * fortawesome/free-regular-svg-icons, licensed under the CC-BY-4.0 and MIT Licenses
   * fortawesome/vue-fontawesome, licensed under the MIT License
   * buefy, licensed under the MIT License
-  * core-js, licensed under the MIT License
   * hammerjs, licensed under the MIT License
   * marked, licensed under the MIT License
-  * resize-observer-polyfill, licensed under the MIT License
   * v-lazy-image, licensed under the MIT License
   * vue, licensed under the MIT License
   * vue-class-component, licensed under the MIT License
diff --git a/viewer/package.json b/viewer/package.json
index f427ef5..905222b 100644
--- a/viewer/package.json
+++ b/viewer/package.json
@@ -6,7 +6,7 @@
   "private": true,
   "scripts": {
     "serve": "vue-cli-service serve",
-    "build": "vue-cli-service build --modern",
+    "build": "vue-cli-service build",
     "build:report": "vue-cli-service build --report",
     "lint": "vue-cli-service lint --no-fix --max-warnings 0",
     "lint-autoformat": "vue-cli-service lint --fix",
@@ -17,44 +17,42 @@
     "@fortawesome/free-solid-svg-icons": "5.14.0",
     "@fortawesome/free-regular-svg-icons": "5.14.0",
     "@fortawesome/vue-fontawesome": "2.0.0",
-    "@types/hammerjs": "2.0.36",
-    "@types/marked": "1.1.0",
+    "@types/hammerjs": "2.0.39",
+    "@types/marked": "2.0.3",
     "buefy": "0.8.15",
-    "core-js": "3.6.5",
     "hammerjs": "2.0.8",
-    "marked": "1.1.1",
-    "resize-observer-polyfill": "1.5.1",
+    "marked": "2.1.3",
     "v-lazy-image": "1.4.0",
-    "vue": "2.6.12",
-    "vue-class-component": "7.2.5",
+    "vue": "2.6.14",
+    "vue-class-component": "7.2.6",
     "vue-dragscroll": "2.1.0",
-    "vue-i18n": "8.21.0",
-    "vue-property-decorator": "9.0.0",
-    "vue-router": "3.4.3",
-    "vuex": "3.5.1",
+    "vue-i18n": "8.24.5",
+    "vue-property-decorator": "9.1.2",
+    "vue-router": "3.5.2",
+    "vuex": "3.6.2",
     "vuex-class-component": "2.3.5"
   },
   "devDependencies": {
     "@types/webpack": "4.41.29",
-    "@typescript-eslint/eslint-plugin": "2.34.0",
-    "@typescript-eslint/parser": "2.34.0",
-    "@vue/cli-plugin-babel": "4.4.6",
-    "@vue/cli-plugin-eslint": "4.4.6",
-    "@vue/cli-plugin-router": "4.4.6",
-    "@vue/cli-plugin-typescript": "4.4.6",
-    "@vue/cli-plugin-vuex": "4.4.6",
-    "@vue/cli-service": "4.4.6",
-    "@vue/eslint-config-typescript": "5.0.2",
-    "eslint": "6.8.0",
-    "eslint-config-prettier": "6.11.0",
-    "eslint-plugin-prettier": "3.1.4",
-    "eslint-plugin-vue": "6.2.2",
+    "@typescript-eslint/eslint-plugin": "4.21.0",
+    "@typescript-eslint/parser": "4.21.0",
+    "@vue/cli-plugin-babel": "4.5.13",
+    "@vue/cli-plugin-eslint": "4.5.13",
+    "@vue/cli-plugin-router": "4.5.13",
+    "@vue/cli-plugin-typescript": "4.5.13",
+    "@vue/cli-plugin-vuex": "4.5.13",
+    "@vue/cli-service": "4.5.13",
+    "@vue/eslint-config-typescript": "7.0.0",
+    "eslint": "7.23.0",
+    "eslint-config-prettier": "8.1.0",
+    "eslint-plugin-prettier": "3.3.1",
+    "eslint-plugin-vue": "7.8.0",
     "node-sass": "4.14.1",
     "sass-loader": "8.0.2",
-    "typescript": "3.9.5",
-    "vue-cli-plugin-buefy": "0.3.7",
+    "typescript": "4.2.4",
+    "vue-cli-plugin-buefy": "0.3.8",
     "vue-cli-plugin-fontawesome": "0.2.0",
-    "vue-cli-plugin-i18n": "1.0.1",
-    "vue-template-compiler": "2.6.12"
+    "vue-cli-plugin-i18n": "2.1.1",
+    "vue-template-compiler": "2.6.14"
   }
 }
diff --git a/viewer/src/services/ldzoom.ts b/viewer/src/services/ldzoom.ts
index 22d4699..0fb0848 100644
--- a/viewer/src/services/ldzoom.ts
+++ b/viewer/src/services/ldzoom.ts
@@ -17,8 +17,6 @@
 -- along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-// polyfill still required for IE and Safari, see https://caniuse.com/#feat=resizeobserver
-import ResizeObserver from "resize-observer-polyfill";
 import "hammerjs";
 
 /**
diff --git a/viewer/src/store/galleryStore.ts b/viewer/src/store/galleryStore.ts
index 5d599aa..6d64e12 100644
--- a/viewer/src/store/galleryStore.ts
+++ b/viewer/src/store/galleryStore.ts
@@ -126,7 +126,7 @@ export default class GalleryStore extends VuexModule {
   }
 
   private static getUrlConfig() {
-    let search = window.location.search;
+    const search = window.location.search;
     if (search.length > 1) return search.substr(1) + ".json";
     return "config.json";
   }
diff --git a/viewer/yarn.lock b/viewer/yarn.lock
index d6cceba..cae4bad 100644
--- a/viewer/yarn.lock
+++ b/viewer/yarn.lock
@@ -2,7 +2,14 @@
 # yarn lockfile v1
 
 
-"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.14.5":
+"@babel/code-frame@7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.12.11.tgz#f4ad435aa263db935b8f10f2c552d23fb716a63f"
+  integrity sha512-Zt1yodBx1UcyiePMSkWnU4hPqhwq7hGi2nFL1LeA3EUl+q2LQx16MISgJ0+z7dnmgvP9QtIleuETGOiOH1RcIw==
+  dependencies:
+    "@babel/highlight" "^7.10.4"
+
+"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.14.5", "@babel/code-frame@^7.8.3":
   version "7.14.5"
   resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.14.5.tgz#23b08d740e83f49c5e59945fbf1b43e80bbf4edb"
   integrity sha512-9pzDqyc6OLDaqe+zbACgFkb6fKMNG6CObKpnYXChRsvYGyEdc7CA2BaqeOM+vOtCS5ndmJicPJhKAwYRI6UfFw==
@@ -14,7 +21,7 @@
   resolved "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.14.7.tgz#7b047d7a3a89a67d2258dc61f604f098f1bc7e08"
   integrity sha512-nS6dZaISCXJ3+518CWiBfEr//gHyMO02uDxBkXTKZDN5POruCnOZ1N4YBRZDCabwF8nZMWBpRxIicmXtBs+fvw==
 
-"@babel/core@^7.11.0", "@babel/core@^7.9.6":
+"@babel/core@^7.11.0":
   version "7.14.6"
   resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.14.6.tgz#e0814ec1a950032ff16c13a2721de39a8416fcab"
   integrity sha512-gJnOEWSqTk96qG5BoIrl5bVtc23DCycmIePPYnamY9RboYdI4nFy5vAQMSl81O5K/W0sLDWfGysnOECC+KUUCA==
@@ -242,7 +249,7 @@
     "@babel/traverse" "^7.14.5"
     "@babel/types" "^7.14.5"
 
-"@babel/highlight@^7.14.5":
+"@babel/highlight@^7.10.4", "@babel/highlight@^7.14.5":
   version "7.14.5"
   resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.14.5.tgz#6861a52f03966405001f6aa534a01a24d99e8cd9"
   integrity sha512-qf9u2WFWVV0MppaL877j2dBtQIDgmidgjGk5VIMw3OadXvYaXn66U1BFlH2t4+t3i+8PhedppRv+i40ABzd+gg==
@@ -903,6 +910,21 @@
     "@babel/helper-validator-identifier" "^7.14.5"
     to-fast-properties "^2.0.0"
 
+"@eslint/eslintrc@^0.4.0":
+  version "0.4.2"
+  resolved "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-0.4.2.tgz#f63d0ef06f5c0c57d76c4ab5f63d3835c51b0179"
+  integrity sha512-8nmGq/4ycLpIwzvhI4tNDmQztZ8sp+hI7cyG8i1nQDhkAbRzHpXPidRAHlNvCZQpJTKw5ItIpMw9RSToGF00mg==
+  dependencies:
+    ajv "^6.12.4"
+    debug "^4.1.1"
+    espree "^7.3.0"
+    globals "^13.9.0"
+    ignore "^4.0.6"
+    import-fresh "^3.2.1"
+    js-yaml "^3.13.1"
+    minimatch "^3.0.4"
+    strip-json-comments "^3.1.1"
+
 "@fortawesome/fontawesome-common-types@^0.2.30":
   version "0.2.35"
   resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-common-types/-/fontawesome-common-types-0.2.35.tgz#01dd3d054da07a00b764d78748df20daf2b317e9"
@@ -983,11 +1005,32 @@
     call-me-maybe "^1.0.1"
     glob-to-regexp "^0.3.0"
 
+"@nodelib/fs.scandir@2.1.5":
+  version "2.1.5"
+  resolved "https://registry.yarnpkg.com/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz#7619c2eb21b25483f6d167548b4cfd5a7488c3d5"
+  integrity sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==
+  dependencies:
+    "@nodelib/fs.stat" "2.0.5"
+    run-parallel "^1.1.9"
+
+"@nodelib/fs.stat@2.0.5", "@nodelib/fs.stat@^2.0.2":
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz#5bd262af94e9d25bd1e71b05deed44876a222e8b"
+  integrity sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A==
+
 "@nodelib/fs.stat@^1.1.2":
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz#2b5a3ab3f918cca48a8c754c08168e3f03eba61b"
   integrity sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==
 
+"@nodelib/fs.walk@^1.2.3":
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/@nodelib/fs.walk/-/fs.walk-1.2.7.tgz#94c23db18ee4653e129abd26fb06f870ac9e1ee2"
+  integrity sha512-BTIhocbPBSrRmHxOAJFtR18oLhxTtAFDAvL8hY1S3iU8k+E60W/YFs4jrixGzQjMpF4qPXxIQHcjVD9dz1C2QA==
+  dependencies:
+    "@nodelib/fs.scandir" "2.1.5"
+    fastq "^1.6.0"
+
 "@soda/friendly-errors-webpack-plugin@^1.7.1":
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/@soda/friendly-errors-webpack-plugin/-/friendly-errors-webpack-plugin-1.8.0.tgz#84751d82a93019d5c92c0cf0e45ac59087cd2240"
@@ -1003,10 +1046,47 @@