- Refactoring: Destructuring, templates, label Unicode code point

- npm: Rename `build-doc` to `build-docs`; add `open-docs` script

package.json

@@ -17,7 +17,8 @@
     "build-config": "rollup -c rollup-config.config.js",
     "types-doc": "npx babel-node --plugins @babel/plugin-transform-modules-commonjs jsdoc-check-overly-generic-types.js",
     "open-es-allext": "opn http://localhost:8000/editor/svg-editor-es.html?extensions=ext-arrows.js,ext-closepath.js,ext-foreignobject.js,ext-helloworld.js,ext-mathjax.js,ext-php_savefile.js,ext-server_moinsave.js,ext-server_opensave.js,ext-webappfind.js,ext-xdomain-messaging.js",
-    "build-doc": "rm -rf docs/jsdoc/*;jsdoc --pedantic -c docs/jsdoc-config.js editor",
+    "build-docs": "rm -rf docs/jsdoc/*;jsdoc --pedantic -c docs/jsdoc-config.js editor",
+    "open-docs": "opn http://localhost:8000/docs/jsdoc/ && npm start",
     "build-html": "npx babel-node --plugins @babel/plugin-transform-modules-commonjs build-html.js",
     "compress-images": "imageoptim 'chrome-app/*.png' && imageoptim 'editor/extensions/*.png' && imageoptim 'editor/spinbtn/*.png' && imageoptim 'editor/jgraduate/images/*.{png,gif}' && imageoptim 'editor/images/*.png'",
     "copy": "cp node_modules/load-stylesheets/dist/index-es.js editor/external/load-stylesheets/index-es.js && cp node_modules/@babel/polyfill/dist/polyfill.min.js editor/external/@babel/polyfill/polyfill.min.js && cp node_modules/@babel/polyfill/dist/polyfill.js editor/external/@babel/polyfill/polyfill.js && cp node_modules/jamilih/dist/jml-es.js editor/external/jamilih/jml-es.js && cp node_modules/query-result/esm/index.js editor/external/query-result/esm/index.js && cp node_modules/qr-manipulation/dist/index-es.js editor/external/qr-manipulation/dist/index-es.js && cp node_modules/stackblur-canvas/dist/stackblur-es.js editor/external/stackblur-canvas/dist/stackblur-es.js",