14 files changed, 9686 insertions, 14276 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9395862..190a0df 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,14 +8,14 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          # Latest version officially tested for Vue
-          node-version: 12.16.1
+          # Latest version officially tested for Ld
+          node-version: 12.22.2
       - name: Lint and build Node.js Vue project
         working-directory: viewer
         run: |
-          npm install
-          npm run lint
-          npm run build
+          yarn
+          yarn run lint
+          yarn run build
       - uses: actions/upload-artifact@v2
         with:
           name: viewer-dist
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/scripts/dev_win_build_compiler.cmd b/scripts/dev_win_compiler_build.cmd
index d88aa5d..d88aa5d 100644
--- a/scripts/dev_win_build_compiler.cmd
+++ b/scripts/dev_win_compiler_build.cmd
diff --git a/scripts/dev_win_compile_example.cmd b/scripts/dev_win_compiler_compile_example.cmd
index 35134c0..35134c0 100644
--- a/scripts/dev_win_compile_example.cmd
+++ b/scripts/dev_win_compiler_compile_example.cmd
diff --git a/scripts/dev_win_help.cmd b/scripts/dev_win_compiler_help.cmd
index f0bdb98..f0bdb98 100644
--- a/scripts/dev_win_help.cmd
+++ b/scripts/dev_win_compiler_help.cmd
diff --git a/scripts/dev_win_start_vueui.cmd b/scripts/dev_win_start_vueui.cmd
deleted file mode 100644
index e1a124d..0000000
--- a/scripts/dev_win_start_vueui.cmd
+++ /dev/null
@@ -1,44 +0,0 @@
-@echo off
-set NODE_VERSION=12.16.1
-set VUECLI_VERSION=4.2.3
-cd ..\viewer\
-
-chcp 65001
-echo.
-echo === nvm install ===
-nvm install %NODE_VERSION%
-nvm list | find /i "%NODE_VERSION% (Currently"
-if errorlevel 1 (
-  echo.
-  echo === nvm use %NODE_VERSION% ===
-  nvm use %NODE_VERSION%
-
-  echo.
-  echo === npm install @vue/cli@%VUECLI_VERSION% ===
-  ping localhost -n 3 >NUL
-  cmd /c npm install -g @vue/cli@%VUECLI_VERSION%
-)
-echo.
-vue --version | find /i "%VUECLI_VERSION%"
-if errorlevel 1 (
-  echo ======================================================================
-  echo Warning: vue/cli doesn't match the requested version: %VUECLI_VERSION%
-  echo.
-  echo CTRL+C to quit and update, or press a key to ignore this warning...
-  echo ======================================================================
-  echo.
-  pause
-)
-echo.
-echo === npm install ===
-cmd /c npm install
-echo.
-echo === npm prune ===
-cmd /c npm prune
-echo.
-echo === npm dedupe ===
-cmd /c npm dedupe
-echo.
-echo === vue ui ===
-title Vue UI - server
-vue ui
diff --git a/scripts/dev_win_viewer_deps_install.cmd b/scripts/dev_win_viewer_deps_install.cmd
new file mode 100644
index 0000000..9e2330d
--- /dev/null
+++ b/scripts/dev_win_viewer_deps_install.cmd
@@ -0,0 +1,22 @@
+@echo off
+set NODE_VERSION=12.22.2
+cd ..\viewer\
+
+chcp 65001
+echo.
+echo === nvm install ===
+nvm install %NODE_VERSION%
+nvm list | find /i "%NODE_VERSION% (Currently"
+if errorlevel 1 (
+  echo.
+  echo === nvm use %NODE_VERSION% ===
+  nvm use %NODE_VERSION%
+
+  ping localhost -n 3 >NUL
+  cmd /c npm install -g yarn
+)
+echo.
+echo === yarn deps ===
+cmd /c rmdir /s /q .\node_modules\
+cmd /c yarn
+echo.
diff --git a/viewer/.browserslistrc b/viewer/.browserslistrc
index d6471a3..d9789a7 100644
--- a/viewer/.browserslistrc
+++ b/viewer/.browserslistrc
@@ -1,2 +1,5 @@
-> 1%
-last 2 versions
+# Polyfills for ES2020+
+
+chrome > 78
+firefox > 72
+edge > 78
diff --git a/viewer/package-lock.json b/viewer/package-lock.json
deleted file mode 100644
index 4785b3e..0000000
--- a/viewer/package-lock.json
+++ /dev/null
@@ -1,14182 +0,0 @@
-{
-  "name": "ldgallery-viewer",
-  "version": "2.0.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "@babel/code-frame": {
-      "version": "7.5.5",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.5.5.tgz",
-      "integrity": "sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==",
-      "dev": true,
-      "requires": {
-        "@babel/highlight": "^7.0.0"
-      }
-    },
-    "@babel/compat-data": {
-      "version": "7.10.3",
-      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.10.3.tgz",
-      "integrity": "sha512-BDIfJ9uNZuI0LajPfoYV28lX8kyCPMHY6uY4WH1lJdcicmAfxCK5ASzaeV0D/wsUaRH/cLk+amuxtC37sZ8TUg==",
-      "dev": true,
-      "requires": {
-        "browserslist": "^4.12.0",
-        "invariant": "^2.2.4",
-        "semver": "^5.5.0"
-      },
-      "dependencies": {
-        "browserslist": {
-          "version": "4.12.2",
-          "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.12.2.tgz",
-          "integrity": "sha512-MfZaeYqR8StRZdstAK9hCKDd2StvePCYp5rHzQCPicUjfFliDgmuaBNPHYUTpAywBN8+Wc/d7NYVFkO0aqaBUw==",
-          "dev": true,
-          "requires": {
-            "caniuse-lite": "^1.0.30001088",
-            "electron-to-chromium": "^1.3.483",
-            "escalade": "^3.0.1",
-            "node-releases": "^1.1.58"
-          }
-        },
-        "caniuse-lite": {
-          "version": "1.0.30001090",
-          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001090.tgz",
-          "integrity": "sha512-QzPRKDCyp7RhjczTPZaqK3CjPA5Ht2UnXhZhCI4f7QiB5JK6KEuZBxIzyWnB3wO4hgAj4GMRxAhuiacfw0Psjg==",
-          "dev": true
-        },
-        "electron-to-chromium": {
-          "version": "1.3.483",
-          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.483.tgz",
-          "integrity": "sha512-+05RF8S9rk8S0G8eBCqBRBaRq7+UN3lDs2DAvnG8SBSgQO3hjy0+qt4CmRk5eiuGbTcaicgXfPmBi31a+BD3lg==",
-          "dev": true
-        },
-        "node-releases": {
-          "version": "1.1.58",
-          "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.58.tgz",
-          "integrity": "sha512-NxBudgVKiRh/2aPWMgPR7bPTX0VPmGx5QBwCtdHitnqFE5/O8DeBXuIMH1nwNnw/aMo6AjOrpsHzfY3UbUJ7yg==",
-          "dev": true
-        }
-      }
-    },
-    "@babel/core": {
-      "version": "7.10.3",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.10.3.tgz",
-      "integrity": "sha512-5YqWxYE3pyhIi84L84YcwjeEgS+fa7ZjK6IBVGTjDVfm64njkR2lfDhVR5OudLk8x2GK59YoSyVv+L/03k1q9w==",
-      "dev": true,
-      "requires": {
-        "@babel/code-frame": "^7.10.3",
-        "@babel/generator": "^7.10.3",
-        "@babel/helper-module-transforms": "^7.10.1",
-        "@babel/helpers": "^7.10.1",
-        "@babel/parser": "^7.10.3",
-        "@babel/template": "^7.10.3",
-        "@babel/traverse": "^7.10.3",
-        "@babel/types": "^7.10.3",
-        "convert-source-map": "^1.7.0",
-        "debug": "^4.1.0",
-        "gensync": "^1.0.0-beta.1",
-        "json5": "^2.1.2",
-        "lodash": "^4.17.13",
-        "resolve": "^1.3.2",
-        "semver": "^5.4.1",
-        "source-map": "^0.5.0"
-      },
-      "dependencies": {
-        "@babel/code-frame": {
-          "version": "7.10.3",
-          "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.10.3.tgz",
-          "integrity": "sha512-fDx9eNW0qz0WkUeqL6tXEXzVlPh6Y5aCDEZesl0xBGA8ndRukX91Uk44ZqnkECp01NAZUdCAl+aiQNGi0k88Eg==",
-          "dev": true,
-          "requires": {
-            "@babel/highlight": "^7.10.3"
-          }
-        },
-        "@babel/highlight": {
-          "version": "7.10.3",
-          "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.10.3.tgz",