bug(components with test harness example): Missing dependencies in StackBlitz examples

[amysorto]

Reproduction

This applies for the example that use test harness for all material components (except for ripples).

Steps to reproduce:

1. Open the StackBlitz link for examples that have tests using a test harness in the 'Examples' page.

Expected Behavior

A working StackBlitz link for these examples. The examples in the documentation site for v11 work as expected (working example for tree component).

Actual Behavior

The StackBlitz link for v12 documentation for test harnesses show an error (failing example for tree component).

The error is the same for all:

Could not find a declaration file for module 'jasmine-core/lib/jasmine-core/jasmine.js'. '/turbo_modules/jasmine-core@3.7.1/lib/jasmine-core/jasmine.js' implicitly has an 'any' type.
Try `npm i --save-dev @types/jasmine-core` if it exists or add a new declaration (.d.ts) file containing `declare module 'jasmine-core/lib/jasmine-core/jasmine.js';`

Environment

• Angular: ^12.0.0
• CDK/Material: ^12.0.0
• Browser(s): Chrome 90
• Operating System (e.g. Windows, macOS, Ubuntu): macOS

[Splaktar]

It looks like we need to add @types/jasmine-core to the following

material.angular.io/src/app/shared/stack-blitz/stack-blitz-writer.ts

Lines 94 to 95 in 95fa5a7

	'@types/jasmine': '^3.6.6',
	'jasmine-core': '^3.6.0',

material.angular.io/src/assets/stack-blitz-tests/package.json

Line 37 in 95fa5a7

"@types/node": "^14.14.22",

I think that we need to add jasmine-core to this package.json as well.

[Splaktar]

It wasn't that easy at all. But I have a fix in PR #1009.