The `buildTarget` options for both the `dev-server` and `extract-i8n` builders
now have default values that reflect the recommended and new project generated
values. The defaults are as follows where `<current-project>` is the name of the project
where the `dev-server` or `extract-i18n` builder target is located:
* `dev-server` --> `<current-project>:build:development`
* `extract-i18n` --> `<current-project>:build`
Additionally, abbreviated target specifiers are now supported for these
options. This allows target specifiers such as `::production` which would expand
to `<current-project>:build:production` for either builder.
Abbreviated target specifiers are only supported for the `buildTarget` option in
the `dev-server` and `extract-i18n` builders.
This is to better match the nature of the application builder where the target can be both browser and server.
DEPRECATED: The `browserTarget` in the dev-server and extract-i18n builders have been deprecated in favor of `buildTarget`.
To allow lower overhead trial of the developer preview of the esbuild-based builder system,
the development server now has an option to force the usage of the esbuild-based
build system while still retaining the default Webpack-based build system for the
`build` command. The `forceEsbuild`/`--force-esbuild` option can be added to the
`angular.json` options for the `serve` target or used on the command line, respectively.
The `browser-esbuild` builder will be used to build the application using the options
specified by the server configuration's `browserTarget` option. Unsupported build options
will be ignored. If using a third-party builder, a warning will be issued but the build
will still be attempted. Third-party builder usage in this context is considered
unsupported and may result in unexpected behavior or build failures.
To provide support for additional development server integration, the `dev-server` builder's
option processing has been reorganized into separate files. The main builder bootstrapping
logic has also been separated into another file. This additionally helps reduce the overall
size of the main Webpack-based development server file.
