With this change we refactor the Angular CLI and replace the underlying args parser and command builder. We choose to use Yargs as our parser and command builder of choice. The main advantages of Yargs over other command builders are;
- Highly configurable.
- We already use it in other packages such as the compiler-cli/dev-infra etc..
- Commands and options can be added during runtime. This is a requirement that is needed to support architect and schematics commands.
- Outstanding documentation.
- The possibility to parse args without parser configuration (Free form).
- Commands are built lazily based on the arguments passed.
BREAKING CHANGE:
Several changes in the Angular CLI commands and arguments handling.
- `ng help` has been removed in favour of the `—-help` option.
- `ng —-version` has been removed in favour of `ng version` and `ng v`.
- Deprecated camel cased arguments are no longer supported. Ex. using `—-sourceMap` instead of `—-source-map` will result in an error.
- `ng update`, `—-migrate-only` option no longer accepts a string of migration name, instead use `—-migrate-only -—name <migration-name>`.
- `—-help json` help has been removed.
Closes#20976, closes#16614 and closes#16241
The `no-useless-escape` eslint rule has now been enabled which removes unneeded characters and complexity from string literals and regular expressions. All files that were in violation of this rule have also been corrected.
Previously, the `--project` flag was ignored when gathering and merging the schematics defaults from the angular workspace configuration file.
Closes#20666
With this change we do several changes to the `angular.json` configuration for `build` , `server` and `app-shell` targets so that these are `production` by default.
- build, server and app-shell targets are configured to run production by default.
- We add a new configuration named `development` to run the mentioned builder targets in development. Ex: `ng build --configuration development`.
- When adding `universal` or `app-shell`, we generate the full set of configurations as per the `buiid` target. Previously, we only generated the `production` configuration.
- We added a helper script in `package.json` to run build in watch mode. `npm run watch` which is a shortcut for `ng build --watch --configuration development`
BREAKING CHANGE: The below options have been removed as they had no effect
- `test` and `testTsconfigFileName` have been removed form the universal schematic
- `universalProject`, `name`, `outDir`, `root` and `index` have been removed from the app-shell schematic
