Fix incompatibility with older node versions

Author: pilafmon

package.json

@@ -81,7 +81,7 @@
    "dependencies": {
       "dna.js": "~1.9",
       "fetch-json": "~2.6",
-      "highlight.js": "~11.4",
+      "highlight.js": "~11.5",
       "hljs-enhance": "~1.0",
       "jquery": "~3.6"
    },
@@ -91,14 +91,14 @@
       "@fortawesome/fontawesome-free": "~6.0",
       "@types/jquery": "~3.5",
       "@types/node": "~17.0",
-      "@typescript-eslint/eslint-plugin": "~5.13",
-      "@typescript-eslint/parser": "~5.13",
+      "@typescript-eslint/eslint-plugin": "~5.15",
+      "@typescript-eslint/parser": "~5.15",
       "add-dist-header": "~0.1",
       "assert-deep-strict-equal": "~1.0",
       "babel-minify": "~0.5",
-      "cpy-cli": "~4.0",
+      "cpy-cli": "~4.1",
       "cssnano": "~5.1",
-      "eslint": "~8.10",
+      "eslint": "~8.11",
       "gulp": "~4.0",
       "gulp-append-prepend": "~1.0",
       "gulp-babel": "~8.0",

tsconfig.json

@@ -1,6 +1,6 @@
 {
    "compilerOptions": {
-      "target": "ES2020",
+      "target": "ES2015",
       "module": "ES2020",
       "moduleResolution": "node",
       "declaration": true,