'(error?: string | RegExp | Constructable | Error | undefined): void' is deprecated.ts(6385) index.d.ts(1140, 12): The declaration was marked as deprecated here. (method) jest.Matchers<void, () => void>.toThrowError(error?: string | RegExp | jest.Constructable | Error | undefined): void If you want to test that a specific error is thrown inside a function. @deprecated — in favor of toThrow

[dil-mezzy]

https://cdkworkshop.com/20-typescript/70-advanced-topics/100-construct-testing/2000-validation-tests.html

Test code throws error coz of deprecated string

test('read capacity can be configured', () => {
const stack = new cdk.Stack();

expect(() => {
new HitCounter(stack, 'MyTestConstruct', {
downstream: new lambda.Function(stack, 'TestFunction', {
runtime: lambda.Runtime.NODEJS_14_X,
handler: 'hello.handler',
code: lambda.Code.fromAsset('lambda')
}),
readCapacity: 3
});
}).toThrowError(/readCapacity must be greater than 5 and less than 20/);
});

instead of above code we can use below code

You can replace it with toThrow to achieve the same effect. Here's the updated test:

test('read capacity can be configured', () => {
    const stack = new cdk.Stack();
  
    expect(() => {
      new HitCounterStack(stack, 'MyTestConstruct', {
        downstream:  new lambda.Function(stack, 'TestFunction', {
          runtime: lambda.Runtime.NODEJS_16_X,
          handler: 'hello.handler',
          code: lambda.Code.fromAsset('lambda')
        }),
        readCapacity: 3
      });
    }).toThrow(/readCapacity must be greater than 5 and less than 20/);
  });

Someone fork this change i am too lazy to do that and admin dont allow PR's pfft

[dil-mezzy]

Also NODEJS14 is deprecated update it to latest version or at least 16 in Typescript workshop please