comparatorFn is not a function - updateMany doesn't support 'where', expects 'which' v0.5.0

[Vicky Koblinski]

Hey, I see that recently which was replaced with where. I have the latest version of this mswjs/data (v0.5.0) from npm and when I try using where in updateMany I get:

TypeError: comparatorFn is not a function

Changing where to which has resolved my problem for now :)

[Artem Zakharchenko]

Hey, @VickyKoblinski.

Could you please share your updateMany call? The error you're describing hints that there's an invalid comparator being used (equals/gte/lt/etc.). If you share your usage I can try to help you solve the problem.

[Artem Zakharchenko]

I confirm that version 0.5.0 expects and properly handles the where property in all model operations.

Here's an integration test for the updateMany method that uses where and successfully passes:

data/test/model/updateMany.test.ts

Lines 27 to 41 in 808295f

 const updateMultiUsers = db.user.updateMany({ 
   where: { 
     role: { 
       equals: 'Auditor', 
     }, 
   }, 
   data: { 
     firstName(firstName) { 
       return firstName.toUpperCase() 
     }, 
     role(role, user) { 
       return user.firstName === 'John' ? 'Writer' : role 
     }, 
   }, 
 })! 

Please ensure you're using the latest @mswjs/data version. You can do so by:

$ npm ls @mswjs/data

Or just update to the latest published version by:

$ npm install @mswjs/data@latest -D
# or
$ yarn add @mswjs/data@latest