import { z } from "zod";
export declare const baseUpdateSchema: z.ZodObject<{
    id: z.ZodString;
    eTag: z.ZodOptional<z.ZodString>;
}, "strip", z.ZodTypeAny, {
    id: string;
    eTag?: string | undefined;
}, {
    id: string;
    eTag?: string | undefined;
}>;
export type BaseUpdate = z.infer<typeof baseUpdateSchema>;
export declare function getETagHeader(entity: Pick<BaseUpdate, "eTag">): {
    "If-Match": string;
} | undefined;
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