build(ui): Add rspack as webpack alternative (#77077)

Building off the work done in #61475 I think the plan would be to use
this as a dev-ui replacement until we're more confident and can setup
the getsentry repo as well (if you aren't familiar we have another repo
with billing pages etc).

Potential adoption roadmap
1. merge rspack as optional dev only command yarn dev-ui-rspack
1. make rspack default for dev-ui
1. use rspack for acceptance tests
1. build production with rspack
1. remove webpack

## Summary

|                  | Webpack     | Rspack      |
| ---------------- | ----------- | ----------- |
| HMR Time         | 4s   | 607ms       |
| Dev Memory Usage | 3.85 GB     | 2.8 GB      |
| Build Production | 131.53s | 39.42s |



---------

Co-authored-by: Yagiz Nizipli <yagiz@nizipli.com>

Author: scttcper

build-utils/last-built-plugin.ts

@@ -1,6 +1,6 @@
 import fs from 'node:fs';
 import path from 'node:path';
-import type webpack from 'webpack';
+import type {Compiler} from 'webpack';
 
 type Options = {
   basePath: string;
@@ -15,7 +15,7 @@ class LastBuiltPlugin {
     this.isWatchMode = false;
   }
 
-  apply(compiler: webpack.Compiler) {
+  apply(compiler: Compiler) {
     compiler.hooks.watchRun.tapAsync('LastBuiltPlugin', (_, callback) => {
       this.isWatchMode = true;
       callback();

package.json

@@ -51,7 +51,10 @@
     "@react-stately/tabs": "^3.6.9",
     "@react-stately/tree": "^3.8.4",
     "@react-types/shared": "^3.24.1",
-    "@rsdoctor/webpack-plugin": "1.0.1",
+    "@rsdoctor/webpack-plugin": "1.1.2",
+    "@rspack/cli": "1.3.10",
+    "@rspack/core": "1.3.10",
+    "@rspack/plugin-react-refresh": "1.4.3",
     "@sentry-internal/global-search": "^1.0.0",
     "@sentry-internal/rrweb": "2.34.0",
     "@sentry-internal/rrweb-player": "2.34.0",
@@ -182,6 +185,7 @@
     "@sentry/jest-environment": "6.0.0",
     "@sentry/profiling-node": "9.16.1",
     "@styled/typescript-styled-plugin": "^1.0.1",
+    "@swc/plugin-emotion": "9.0.4",
     "@tanstack/eslint-plugin-query": "^5.66.1",
     "@testing-library/dom": "10.4.0",
     "@testing-library/jest-dom": "6.6.3",
@@ -246,18 +250,25 @@
     "fix:prettier": "prettier \"**/*.md\" \"**/*.yaml\" \"**/*.[jt]s(x)?\" --write --log-level=error",
     "dev": "(yarn check --verify-tree || yarn install --check-files) && sentry devserver",
     "dev-ui": "SENTRY_UI_DEV_ONLY=1 SENTRY_WEBPACK_PROXY_PORT=7999 SENTRY_UI_HOT_RELOAD=1 webpack serve",
+    "dev-ui-rspack": "SENTRY_UI_DEV_ONLY=1 SENTRY_WEBPACK_PROXY_PORT=7999 SENTRY_UI_HOT_RELOAD=1 rspack serve",
     "dev-ui-admin": "SENTRY_ADMIN_UI_DEV=1 yarn dev-ui",
+    "dev-ui-admin-rspack": "SENTRY_ADMIN_UI_DEV=1 yarn dev-ui-rspack",
     "dev-ui-storybook": "STORYBOOK_TYPES=1 yarn dev-ui",
     "dev-acceptance": "NO_DEV_SERVER=1 NODE_ENV=development webpack --watch",
+    "dev-acceptance-rspack": "NO_DEV_SERVER=1 NODE_ENV=development rspack --watch",
     "webpack-profile": "NO_TS_FORK=1 webpack --profile --json > stats.json",
+    "webpack-profile-rspack": "NO_TS_FORK=1 rspack build --json > stats.json",
     "install-api-docs": "yarn install --cwd ./api-docs",
     "build-deprecated-docs": "yarn install-api-docs && ts-node api-docs/index.ts api-docs/openapi.json tests/apidocs/openapi-deprecated.json",
     "diff-docs": "yarn install-api-docs && ts-node api-docs/openapi-diff.ts",
     "deref-api-docs": "ts-node api-docs/index.ts tests/apidocs/openapi-spectacular.json tests/apidocs/openapi-derefed.json",
     "build-chartcuterie-config": "node --experimental-strip-types config/build-chartcuterie.ts",
+    "build-acceptance-rspack": "CODECOV_ENABLE_BA=false IS_ACCEPTANCE_TEST=1 NODE_ENV=production rspack",
     "build-acceptance": "CODECOV_ENABLE_BA=false IS_ACCEPTANCE_TEST=1 NODE_ENV=production webpack",
     "build-production": "NODE_ENV=production webpack --mode production",
+    "build-production-rspack": "NODE_ENV=production rspack --mode production",
     "build": "NODE_OPTIONS=--max-old-space-size=4096 webpack",
+    "build-rspack": "NODE_OPTIONS=--max-old-space-size=4096 rspack",
     "build-js-loader": "ts-node scripts/build-js-loader.ts",
     "build-js-po": "node --experimental-strip-types build-utils/ts-extract-gettext.ts",
     "validate-api-examples": "yarn --cwd api-docs openapi-examples-validator ../tests/apidocs/openapi-derefed.json --no-additional-properties",