Update Cypress to use Chai 4.0 instead of 3.5

[jennifer-shehane]

• Cypress Version: 1.4.1

Is this a Feature or Bug?

Feature

Current behavior:

There have been some new methods that were introduced to Chai between 3.5 & 4.0, but Cypress still uses 3.5. Current version of Chai 4.1.2 and have some more bug fixes and ES6 fixes.

Desired behavior:

Ability to use updates in Chai 4.0:

• Add ordered assertion: to.have.ordered.members
• Throw when non-existent property is read. expect(true).to.be.ture; // Oops, typo, now Chai will throw an Error
• Have suggestions on typos. expect(false).to.be.fals; // Error: Invalid Chai property: fals. Did you mean "false"?
• Use by with increase, change decrease. expect(increaseByTwo).to.increase(obj, 'val').by(2)
• Use does and but as new no-op assertion.
• Use nested property

How to reproduce:

Test Code

expect([1, 2]).to.have.ordered.members([1, 2])

Resulting Error

CypressError: Timed out retrying: Cannot read property 'members' of undefined

[lilaconlee]

Covered by #2529

[swatisharma0303]

Hi @jennifer-shehane , I am using [email protected] and still getting the same error

[jennifer-shehane]

@Swati-activeops The code for this is done in #2862, but this has yet to be released. We'll update this issue and reference the changelog when it's released.

Sorry for the confusion.

[cypress-bot]

Released in 4.0.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v4.0.0, please open a new issue.