fix(package.json): install spellcheck dependencies

package.json

@@ -39,7 +39,6 @@
     "postinstall": "if [ -z \"$CI\" ]; then husky install; else echo 'skipped installing husky git hooks'; fi",
     "lint": "rm -f npm.pipe; touch npm.pipe; command -v unbuffer >/dev/null; X=$?; [ $X -eq 0 ] && unbuffer tsc --project tsconfig.lint.json >> npm.pipe; Y=$?; [ $Y -eq 0 ] && echo >> npm.pipe; unbuffer eslint --parser-options=project:tsconfig.lint.json src >> npm.pipe; Z=$?; [ $X -ne 0 ] && tsc --project tsconfig.lint.json >> npm.pipe && eslint --parser-options=project:tsconfig.lint.json src >> npm.pipe; W=$?; cat npm.pipe | less -R -FX; rm npm.pipe; ([ $W -eq 0 ] && [ $X -ne 0 ]) || ([ $X -eq 0 ] && [ $Y -eq 0 ] && [ $Z -eq 0 ])",
     "list-tasks": "node -e 'console.log(Object.keys(require(\"./package.json\").scripts).join(\"\\n\"))' && echo '\n(no gulp tasks defined for this project)'",
-    "repl": "command -v rlwrap >/dev/null && rlwrap npx -p @babel/core -p @babel/node babel-node",
     "test": "npm run test-unit --",
     "test-integration": "npm run list-tasks | grep -e '^test-integration-' | xargs -n1 npm run",
     "test-integration-browser": "BABEL_ENV=test jest test/integration-browser*.test.ts",
@@ -120,6 +119,7 @@
     "babel-plugin-source-map-support": "^2.1.3",
     "babel-plugin-transform-mjs-imports": "^1.0.1",
     "confusing-browser-globals": "^1.0.10",
+    "conventional-changelog-angular": "^5.0.12",
     "conventional-changelog-cli": "^2.1.1",
     "eslint": "^7.14.0",
     "eslint-import-resolver-alias": "^1.1.2",
@@ -133,9 +133,12 @@
     "prettier": "^2.2.0",
     "puppeteer": "^5.5.0",
     "semantic-release": "^17.3.0",
+    "shelljs": "^0.8.4",
     "sort-package-json": "^1.48.0",
     "source-map-support": "^0.5.19",
+    "spellchecker": "^3.7.1",
     "test-listen": "^1.1.0",
+    "text-extensions": "^1.9.0",
     "typedoc": "0.19.2",
     "typedoc-plugin-markdown": "^3.0.11",
     "typescript": "^4.1.2",