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  1. Realm JavaScript SDK
  2. RJS-1751

Clean up Collection APIs

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      THIS ISSUE IS STILL A DRAFT

      The idea is that Realm.Collection is supposed to emulate Array, and in order to have fewer surprises, the Array methods are added to Realm.Collection. Prior to v10.5.0, we had two classes, Realm.Results and Realm.List, behaving like Array by inheriting from Realm.Collection. In v10.5.0 we expanded our collection classes with Realm.Set and Realm.Directory.

      Today, we rely on the Array prototype chain, and adding the methods from Array to our classes.

      Method Realm.Results Realm.List Realm.Set Realm.Dictionary
      [] ✅ (index) ✅ (index) ❌ (unordered) ✅ (string keys)
      toString ✅ ✅ ✅ ✅
      toLocaleString ✅ ✅ ✅ ✅
      concat ✅ ✅ ❌ ❌
      join ✅ ✅ ❌ ❌
      slice ✅ ✅ ❌ ❌
      lastIndexOf ✅ ✅ ❌ ❌
      every ✅ ✅ ❌ ❌
      some ✅ ✅ ❌ ❌
      forEach ✅ ✅ ✅ ❌
      find ✅ ✅ ❌ ❌
      findIndex ✅ ✅ ❌ ❌
      map ✅ ✅ ❌ ❌
      filter ✅ ✅ ❌ ❌
      reduce ✅ ✅ ❌ ❌
      reduceRight ✅ ✅ ❌ ❌
      entries ✅ ✅ ✅ ✅
      keys ✅ ✅ ✅ ✅
      values ✅ ✅ ✅ ✅

      Related to https://github.com/realm/realm-js/issues/4627

            Assignee:
            Unassigned Unassigned
            Reporter:
            kenneth.geisshirt@mongodb.com Kenneth Geisshirt
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              Created:
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