History

object

Undo/redo availability on the map's timeline.

• editRevisionstringpattern ^[0-9a-f]{32}$

  Opaque durable revision paired with this document state. Camera and derived writes do not change it.

• lastChangedAtstringor nullformat date-time

  Time of the last accepted covered change, independent of camera and cache clocks.

• lastChangedBy

  A named actor has display and fixed SQL names. { deleted: true } explicitly identifies a deleted actor and carries no names or profile fields. Null explicitly means unknown. Never inferred from ownership.

  One of:

  • object

    • namestringrequired

    • sqlNamestringrequired

    No other keys.

  • object

    • deletedbooleanalways truerequired

    No other keys.

  • or null

• canUndobooleanrequired

• canRedobooleanrequired

• undoTargetHistoryTargetrequired

• redoTargetHistoryTargetrequired

All of:

• object

  • editRevisionstringrequiredpattern ^[0-9a-f]{32}$

    Opaque durable revision paired with this document state. Camera and derived writes do not change it.

  • lastChangedAtstringor nullrequiredformat date-time

    Time of the last accepted covered change, independent of camera and cache clocks.

  • lastChangedByrequired

    A named actor has display and fixed SQL names. { deleted: true } explicitly identifies a deleted actor and carries no names or profile fields. Null explicitly means unknown. Never inferred from ownership.

    One of:

    • object

      • namestringrequired

      • sqlNamestringrequired

      No other keys.

    • object

      • deletedbooleanalways truerequired

      No other keys.

    • or null