import { z, ZodError, type Primitive } from 'zod';
export type ParseResult<T> = {
    success: true;
    data: T;
} | {
    success: false;
    error: string;
};
export declare function safeParse<Schema extends z.ZodType>(schema: Schema, data: unknown | undefined): ParseResult<z.infer<Schema> | undefined>;
export declare function summarizeError(error: ZodError<unknown>): string;
export declare function unionOfLiterals<T extends Primitive>(constants: readonly [T, ...T[]]): z.ZodUnion<[z.ZodLiteral<T>, z.ZodLiteral<T>, ...z.ZodLiteral<T>[]]>;
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