chore: Remove 16+ unused dependencies (#4910)

* chore: Remove no-longer used webpack loaders

* chore: Remove migration of markdown from Slate documents (2y old)

* chore: Remove more unused deps

* chore: Remove explicit core-js dep

* Remove more unused dependencies

* test

package.json

@@ -46,11 +46,11 @@
     "> 0.25%, not dead"
   ],
   "dependencies": {
-    "@babel/core": "^7.18.6",
+    "@babel/core": "^7.21.0",
     "@babel/plugin-proposal-decorators": "^7.21.0",
-    "@babel/plugin-transform-destructuring": "^7.20.2",
-    "@babel/plugin-transform-regenerator": "^7.10.4",
-    "@babel/preset-env": "^7.16.0",
+    "@babel/plugin-transform-destructuring": "^7.20.0",
+    "@babel/plugin-transform-regenerator": "^7.20.0",
+    "@babel/preset-env": "^7.20.0",
     "@babel/preset-react": "^7.18.6",
     "@benrbray/prosemirror-math": "^0.2.2",
     "@bull-board/api": "^4.2.2",
@@ -84,7 +84,6 @@
     "class-validator": "^0.14.0",
     "compressorjs": "^1.1.1",
     "copy-to-clipboard": "^3.3.3",
-    "core-js": "^3.26.1",
     "crypto-js": "^4.1.1",
     "datadog-metrics": "^0.10.2",
     "date-fns": "^2.25.0",
@@ -93,10 +92,8 @@
     "email-providers": "^1.13.1",
     "emoji-regex": "^10.0.0",
     "es6-error": "^4.1.1",
-    "exports-loader": "^1.1.1",
     "fetch-retry": "^5.0.3",
     "fetch-with-proxy": "^3.0.1",
-    "file-loader": "^1.1.6",
     "focus-visible": "^5.2.0",
     "fractional-index": "^1.0.0",
     "framer-motion": "^4.1.17",
@@ -108,13 +105,11 @@
     "i18next": "^22.4.8",
     "i18next-fs-backend": "^2.1.1",
     "i18next-http-backend": "^2.1.1",
-    "immutable": "^4.2.4",
     "inline-css": "^4.0.1",
     "invariant": "^2.2.4",
     "ioredis": "^5.0.0",
     "is-printable-key-event": "^1.0.0",
     "jsdom": "^21.0.0",
-    "json-loader": "0.5.7",
     "jsonwebtoken": "^9.0.0",
     "jszip": "^3.10.1",
     "katex": "^0.16.4",
@@ -122,7 +117,6 @@
     "koa": "^2.13.4",
     "koa-body": "^4.2.0",
     "koa-compress": "^5.1.0",
-    "koa-convert": "^2.0.0",
     "koa-helmet": "^6.1.0",
     "koa-logger": "^3.2.1",
     "koa-mount": "^3.0.0",
@@ -142,8 +136,7 @@
     "mobx-utils": "^4.0.1",
     "natural-sort": "^1.0.0",
     "node-fetch": "2.6.7",
-    "node-htmldiff": "^0.9.4",
-    "nodemailer": "^6.6.1",
+    "nodemailer": "^6.9.1",
     "outline-icons": "^1.46.0",
     "oy-vey": "^0.12.0",
     "passport": "^0.6.0",
@@ -152,7 +145,6 @@
     "passport-slack-oauth2": "^1.1.1",
     "patch-package": "^6.5.1",
     "pg": "^8.8.0",
-    "pg-hstore": "^2.3.4",
     "pg-tsquery": "^8.4.0",
     "polished": "^4.2.2",
     "prosemirror-commands": "1.2.2",
@@ -173,7 +165,6 @@
     "quoted-printable": "^1.0.1",
     "randomstring": "1.2.3",
     "rate-limiter-flexible": "^2.4.1",
-    "raw-loader": "^0.5.1",
     "react": "^17.0.2",
     "react-avatar-editor": "^13.0.0",
     "react-color": "^2.17.3",
@@ -194,15 +185,12 @@
     "reakit": "^1.3.11",
     "reflect-metadata": "^0.1.13",
     "refractor": "^3.6.0",
-    "regenerator-runtime": "^0.13.7",
     "request-filtering-agent": "^1.1.2",
     "semver": "^7.3.7",
     "sequelize": "^6.20.1",
     "sequelize-cli": "^6.4.1",
     "sequelize-encrypted": "^1.0.0",
     "sequelize-typescript": "^2.1.5",
-    "slate": "0.45.0",
-    "slate-md-serializer": "5.5.4",
     "slug": "^5.3.0",
     "slugify": "^1.6.5",
     "smooth-scroll-into-view-if-needed": "^1.1.32",
@@ -235,7 +223,7 @@
     "@babel/cli": "^7.21.0",
     "@babel/preset-typescript": "^7.21.0",
     "@getoutline/jest-runner-serial": "^2.0.0",
-    "@relative-ci/agent": "^3.0.0",
+    "@relative-ci/agent": "^4.1.3",
     "@types/body-scroll-lock": "^3.1.0",
     "@types/crypto-js": "^4.1.1",
     "@types/datadog-metrics": "^0.6.2",
@@ -310,15 +298,13 @@
     "@typescript-eslint/parser": "^5.48.1",
     "babel-eslint": "^10.1.0",
     "babel-jest": "^29.4.3",
-    "babel-loader": "^9.1.2",
     "babel-plugin-transform-inline-environment-variables": "^0.4.4",
     "babel-plugin-transform-typescript-metadata": "^0.3.2",
     "babel-plugin-tsconfig-paths-module-resolver": "^1.0.3",
     "browserslist-to-esbuild": "^1.2.0",
     "concurrently": "^7.4.0",
-    "css-loader": "5.2.6",
     "enzyme": "^3.11.0",
-    "enzyme-adapter-react-16": "^1.15.6",
+    "enzyme-adapter-react-16": "^1.15.7",
     "eslint": "^7.32.0",
     "eslint-config-prettier": "^8.5.0",
     "eslint-import-resolver-typescript": "^3.5.2",
@@ -342,10 +328,8 @@
     "react-refresh": "^0.14.0",
     "rimraf": "^2.5.4",
     "rollup-plugin-webpack-stats": "^0.2.0",
-    "style-loader": "2.0.0",
     "terser": "^5.16.3",
     "typescript": "^4.7.4",
-    "url-loader": "^4.1.1",
     "vite-plugin-static-copy": "^0.13.0",
     "yarn-deduplicate": "^6.0.1"
   },