import type { PendingApproval, WorkflowRun } from "../types.js";
/** Read the internal schema identity retained by workflow backends. */
export declare function getPendingApprovalResponseSchemaId(approval: PendingApproval): string | undefined;
/** Remove backend-only metadata before an approval crosses a public boundary. */
export declare function projectPendingApproval(approval: PendingApproval): PendingApproval;
/** Remove approval metadata while retaining the rest of a run snapshot. */
export declare function projectRunPendingApprovals(run: WorkflowRun): WorkflowRun;
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