This is needed as currently this breaks lock file maintenance Renovate PR https://github.com/angular/angular-cli/pull/20107 due to quicktype-core has an unspecified dependency on lodash.
```
bazel-out/host/bin/tools/quicktype_runner.sh packages/angular_devkit/build_angular/src/app-shell/schema.json bazel-out/k8-fastbuild/bin/packages/angular_devkit/build_angular/src/app-shell/schema.ts)
Execution platform: //tools:rbe_ubuntu1604-angular
Error: Cannot find module 'lodash'. Please verify that the package.json has a valid "main" entry
at Function.module.constructor._resolveFilename (/b/f/w/bazel-out/host/bin/tools/quicktype_runner.sh.runfiles/angular_cli/tools/quicktype_runner_require_patch.js:480:17)
at Function.Module._load (internal/modules/cjs/loader.js:667:27)
at Module.require (internal/modules/cjs/loader.js:887:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (/b/f/w/bazel-out/host/bin/tools/quicktype_runner.sh.runfiles/npm/node_modules/quicktype-core/dist/language/Dart.js:14:18)
at Module._compile (internal/modules/cjs/loader.js:999:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
at Module.load (internal/modules/cjs/loader.js:863:32)
at Function.Module._load (internal/modules/cjs/loader.js:708:14)
at Module.require (internal/modules/cjs/loader.js:887:19)
INFO: Elapsed time: 81.607s, Critical Path: 8.94s
Library code inside fesm2015/esm2015/_esm2015 directories has been downlevelled to ES2015 which will not have native async/await. As a result, code from those directories can be skipped from the additional checks as well as the downlevel processing. RxJS uses the `_esm2015` directory naming convention.
With this change we configure `webpack-dev-middleware` and `webpack-dev-server` to print errors to the console, which previously were not displayed. This is because both of these libraries log/emit errors using the logger and the compilation API.
Certain errors such as the one below, were being swallowed during `ng serve`.
```
An unhandled exception occurred: Prevent writing to file that only differs in casing or query string from already written file.
This will lead to a race-condition and corrupted files on case-insensitive file systems.
/home/circleci/ng/aio/dist/generated/docs/api/router/Routes.json
/home/circleci/ng/aio/dist/generated/docs/api/router/ROUTES.json
```
Webpack 5 directly provides the set of modified and removed files. This feature allows for the removal of the file timestamp logic within the plugin that was previously used to generated the set of changed files on a rebuild.
Tailwind now suppports an environment variable named `TAILWIND_MODE` with possible values of `build` and `watch`. If the variable has not been set, the tooling will now set the variable based on the builder's `watch` option.
BREAKING CHANGE:
`styl` (Stylus) is no longer a supported value as `style` in `application`, `component`, `ng-new` schematics. Stylus is not actively maintained and only 0.3% of the Angular CLI users use it.
The current stable version of `webpack-dev-server` does not fully handle Webpack 5's configuration options. In this case, the `target` option can now be an array. However, the array form is ignored by the dev server which can cause the live reload client code to not be included in the output bundles. To remedy this, the `injectClient` option is used when live reload is enabled which forces the client code to be included regardless of the `target` option.
Webpack's `fileDependencies` Set could contain directories as well as files. The directories were previously stored and incorrectly used during cache invalidation which resulted in excessive cache validation.
This change attempts to skip directories by ignoring any `fileDependencies` entry that does not have a file extension.
When in watch mode, both the file and inline resources will now be cached between rebuilds. This removes the need to reprocess inline resources that have not changed even if the containing TypeScript file has changed.
