We were linting against usages of `fdescribe` and `fit` by referencing the `no-jasmine-focus` rule which isn't installed, causing tslint to log the following:
```
Could not find implementations for the following rules specified in the configuration:
no-jasmine-focus
Try upgrading TSLint and/or ensuring that you have all necessary custom rules installed.
If TSLint was recently upgraded, you may have old rules configured which need to be cleaned
```
These changes switch to using the built-in `ban` rule.
PR Close #42415
API Examples
This folder contains small example apps that get in-lined into our API docs. Each example contains tests for application behavior (as opposed to testing Angular's behavior) just like an Angular application developer would write.
Running the examples
# Serving individual examples (e.g. common)
yarn bazel run //packages/examples/common:devserver
# "core" examples
yarn bazel run //packages/examples/core:devserver
Running the tests
yarn bazel test //packages/examples/...