Suggestion: TypeScript: remove fallback for should to increase type safety

[OliverJAsh]

Current behavior:

cy.get('foo').should('whatevergoeshere'); // no error :-(

cy.get('foo').should('exis'); // oops, typo—but no error :-(
cy.get('foo').should('exist'); // ✅

Desired behavior:

cy.get('foo').should('whatevergoeshere'); // type error, `whatevergoeshere` is not a valid assertion

cy.get('foo').should('exis'); // type error, `exis` is not a valid assertion
cy.get('foo').should('exist'); // ✅

[sainthkh]

I tried to remove this, but I think that's impossible with current chai.js. There are too many valid combinations and we cannot cover everything. And we might block some valid assertions.

And this type of error is not hard to find. It can be easily found by running tests once.

So, I decided to add more types and leave the fallback.

[cypress-bot]

The code for this is done in cypress-io/cypress#8068, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 4.12.0.

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