The consistent read_time for the given target_ids (omitted when the
target_ids are not at a consistent snapshot).
The stream is guaranteed to send a read_time with target_ids empty
whenever the entire stream reaches a new consistent snapshot. ADD,
CURRENT, and RESET messages are guaranteed to (eventually) result in a
new consistent snapshot (while NO_CHANGE and REMOVE messages are not).
For a given stream, read_time is guaranteed to be monotonically
increasing.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe latest version available for the \u003ccode\u003eTargetChange\u003c/code\u003e class in the Firestore v1 API is 3.10.0, with version 3.7.0 being the focus of the current documentation.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eTargetChange\u003c/code\u003e is a class that represents changes to watched targets and implements multiple interfaces, including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTargetChange\u003c/code\u003e class has constructors to initialize a new instance and to make a copy of another \u003ccode\u003eTargetChange\u003c/code\u003e instance, respectively.\u003c/p\u003e\n"],["\u003cp\u003eThe class's properties (\u003ccode\u003eCause\u003c/code\u003e, \u003ccode\u003eReadTime\u003c/code\u003e, \u003ccode\u003eResumeToken\u003c/code\u003e, \u003ccode\u003eTargetChangeType\u003c/code\u003e, \u003ccode\u003eTargetIds\u003c/code\u003e) provide details about the change, such as the error that caused the change, the consistent read time, and the type of change that occurred.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTargetIds\u003c/code\u003e property indicates which specific targets have changed, and an empty \u003ccode\u003eTargetIds\u003c/code\u003e signifies that the change applies to all watched targets.\u003c/p\u003e\n"]]],[],null,[]]
