[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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\u003eThis page details the \u003ccode\u003ePrecondition\u003c/code\u003e class within the Google Cloud Firestore API, which is used to specify conditions for update operations on documents.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePrecondition\u003c/code\u003e class includes properties like \u003ccode\u003eExists\u003c/code\u003e and \u003ccode\u003eLastUpdateTime\u003c/code\u003e, allowing checks for document existence and the time of its last update.\u003c/p\u003e\n"],["\u003cp\u003eThe class also offers static properties \u003ccode\u003eMustExist\u003c/code\u003e and \u003ccode\u003eNone\u003c/code\u003e for common precondition scenarios, like requiring a document to exist or not having any precondition respectively.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eLastUpdated(Timestamp)\u003c/code\u003e method allows for the creation of a precondition specifying that a document's last update time must match a given timestamp.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of the documentation available is version 3.10.0 and this content covers version 3.9.0 of the class Precondition, with links provided to older versions.\u003c/p\u003e\n"]]],[],null,[]]
