import { z } from 'zod';
export declare const INCLUDE_ALL: "all";
export declare function buildIncludeSet(spec: readonly string[] | undefined, defaults: readonly string[], optional: readonly string[]): Set<string>;
export declare function projectFields<T extends Record<string, unknown>>(obj: T, fields: ReadonlySet<string>): Partial<T>;
export declare function projectContext<T extends Record<string, unknown>>(ctx: T, fields: ReadonlySet<string>, always?: readonly (keyof T & string)[]): Partial<T>;
type IncludeSchemaOpts<T extends string> = {
    defaults: readonly T[];
    optional: readonly T[];
    noun?: string;
    describeExtra?: string;
};
export declare function includeFieldSchema<T extends string>(opts: IncludeSchemaOpts<T>): z.ZodOptional<z.ZodArray<z.ZodEnum<[string, ...string[]]>, "many">>;
export declare function sortFieldSchema<T extends string>(opts: {
    fields: readonly T[];
    desc?: string;
}): z.ZodObject<{
    field: z.ZodEnum<[T, ...T[]]>;
    direction: z.ZodEnum<["asc", "desc"]>;
}, "strip", z.ZodTypeAny, z.objectUtil.addQuestionMarks<z.baseObjectOutputType<{
    field: z.ZodEnum<[T, ...T[]]>;
    direction: z.ZodEnum<["asc", "desc"]>;
}>, any> extends infer T_1 ? { [k in keyof T_1]: T_1[k]; } : never, z.baseObjectInputType<{
    field: z.ZodEnum<[T, ...T[]]>;
    direction: z.ZodEnum<["asc", "desc"]>;
}> extends infer T_2 ? { [k_1 in keyof T_2]: T_2[k_1]; } : never>;
export {};
//# sourceMappingURL=projection.d.ts.map