{
  "version": 3,
  "sources": ["../../src/sync-backend.ts"],
  "sourcesContent": ["import type { Snapshot, SnapshotSelection } from \"./types.js\";\n\nexport type PublicationCapability =\n\t| \"read-check-write-verify\"\n\t| \"conditional-required\"\n\t| \"atomic-conditional\"\n\t| \"lease-protected\";\n\nexport interface RemoteHead {\n\t/** Backend-owned reference used only to retrieve this immutable snapshot. */\n\tsnapshotRef: string;\n\t/** Backend-neutral snapshot content identity retained in local sync state. */\n\tsnapshotId: string;\n\trevision: string;\n\tcreatedAt: string;\n\tmachine: string;\n\tsyncSessions: boolean;\n\t/** Validated lightweight projection; revalidate it against the immutable snapshot before adoption. */\n\tselection?: SnapshotSelection;\n}\n\nexport interface RemoteHistoryEntry {\n\tsnapshotRef: string;\n\tsnapshotId: string;\n\tcreatedAt: string;\n\tmachine: string;\n\tsyncSessions: boolean;\n}\n\nexport type ExpectedRemoteHead = { kind: \"missing\" } | { kind: \"revision\"; revision: string };\n\nexport interface PublishSnapshotOptions {\n\tsignal?: AbortSignal;\n\t/** Called at the backend's active-head commit boundary. */\n\tonCommit?: () => void;\n}\n\nexport interface PublishSnapshotResult {\n\thead: RemoteHead;\n\twarnings: string[];\n}\n\nexport interface BackendDiagnostic {\n\tkey: string;\n\tlevel: \"info\" | \"warning\" | \"error\";\n\tmessage: string;\n}\n\nexport interface SyncBackend {\n\treadonly identity: string;\n\treadonly destination: string;\n\treadonly capability: PublicationCapability;\n\t/** Compare opaque revisions produced by this backend identity. */\n\tsameRevision(left: string, right: string): boolean;\n\treadHead(signal?: AbortSignal): Promise<RemoteHead | undefined>;\n\treadSnapshot(reference: string, signal?: AbortSignal): Promise<Snapshot>;\n\tpublishSnapshot(\n\t\tsnapshot: Snapshot,\n\t\texpected: ExpectedRemoteHead,\n\t\toptions?: PublishSnapshotOptions,\n\t): Promise<PublishSnapshotResult>;\n\tlistHistory(signal?: AbortSignal): Promise<RemoteHistoryEntry[]>;\n\tdiagnose(signal?: AbortSignal): Promise<BackendDiagnostic[]>;\n}\n\nexport class SyncBackendConflictError extends Error {\n\treadonly code = \"SYNC_BACKEND_CONFLICT\";\n\treadonly phase: \"before-commit\" | \"after-commit\";\n\treadonly currentHead?: RemoteHead;\n\treadonly candidateMayHaveBeenActive: boolean;\n\n\tconstructor(\n\t\tmessage: string,\n\t\toptions: ErrorOptions & {\n\t\t\tphase?: \"before-commit\" | \"after-commit\";\n\t\t\tcurrentHead?: RemoteHead;\n\t\t\tcandidateMayHaveBeenActive?: boolean;\n\t\t} = {},\n\t) {\n\t\tsuper(message, options);\n\t\tthis.name = \"SyncBackendConflictError\";\n\t\tthis.phase = options.phase ?? \"before-commit\";\n\t\tthis.currentHead = options.currentHead;\n\t\tthis.candidateMayHaveBeenActive = options.candidateMayHaveBeenActive ?? false;\n\t}\n}\n\nexport class SyncBackendPublicationOutcomeUnknownError extends Error {\n\treadonly code = \"SYNC_BACKEND_PUBLICATION_OUTCOME_UNKNOWN\";\n\n\tconstructor(message: string, options?: ErrorOptions) {\n\t\tsuper(message, options);\n\t\tthis.name = \"SyncBackendPublicationOutcomeUnknownError\";\n\t}\n}\n\nexport function expectedRemoteHead(head: RemoteHead | undefined): ExpectedRemoteHead {\n\treturn head ? { kind: \"revision\", revision: head.revision } : { kind: \"missing\" };\n}\n"],
  "mappings": ";;;;AAiEO,IAAM,2BAAN,cAAuC,MAAM;AAAA,EAC1C,OAAO;AAAA,EACP;AAAA,EACA;AAAA,EACA;AAAA,EAET,YACC,SACA,UAII,CAAC,GACJ;AACD,UAAM,SAAS,OAAO;AACtB,SAAK,OAAO;AACZ,SAAK,QAAQ,QAAQ,SAAS;AAC9B,SAAK,cAAc,QAAQ;AAC3B,SAAK,6BAA6B,QAAQ,8BAA8B;AAAA,EACzE;AACD;AAEO,IAAM,4CAAN,cAAwD,MAAM;AAAA,EAC3D,OAAO;AAAA,EAEhB,YAAY,SAAiB,SAAwB;AACpD,UAAM,SAAS,OAAO;AACtB,SAAK,OAAO;AAAA,EACb;AACD;AAEO,SAAS,mBAAmB,MAAkD;AACpF,SAAO,OAAO,EAAE,MAAM,YAAY,UAAU,KAAK,SAAS,IAAI,EAAE,MAAM,UAAU;AACjF;",
  "names": []
}