/**
 * Request body classification shared by every serverless adapter.
 *
 * Every adapter accepts the same JSON shape:
 *   { phoneNumber: "+14155552671", defaultCountry?: "US", locale?: "en", carrierLocale?: "en" }
 *
 * Or a batch:
 *   { phoneNumbers: ["+14155552671", "+442079460958"], defaultCountry?: "US", ... }
 *
 * Centralising the shape (and the 100-entry batch cap) means a future change
 * lands in one place instead of six adapter files.
 */
import type { CarrierLocale, GeocoderLocale } from '../../types';
export declare const MAX_BATCH_SIZE = 100;
/** Fields shared by request bodies and downstream `BatchOptions`. */
interface ValidationCommon {
    defaultCountry?: string;
    locale?: GeocoderLocale;
    carrierLocale?: CarrierLocale;
    /** Run the geocoder lookup (default: true). */
    geocode?: boolean;
    /** Run the carrier lookup (default: true). */
    carrier?: boolean;
    /** Run the timezone lookup (default: true). */
    timezones?: boolean;
}
export interface ValidationRequestBody extends ValidationCommon {
    phoneNumber?: string;
    phoneNumbers?: string[];
}
export type BatchOptions = ValidationCommon;
export type ValidationDispatch = {
    kind: 'single';
    phoneNumber: string;
    options: BatchOptions;
} | {
    kind: 'batch';
    phoneNumbers: string[];
    options: BatchOptions;
};
export interface ValidationFailure {
    kind: 'invalid';
    status: 400;
    message: string;
}
export type BatchValidation = {
    ok: true;
    phoneNumbers: string[];
} | {
    ok: false;
    status: 400;
    message: string;
};
/** Lift the locale + enrichment fields out of a request body. */
export declare function extractBatchOptions(body: ValidationRequestBody): BatchOptions;
export declare function validateBatchField(phoneNumbers: unknown): BatchValidation;
export declare function classifyRequest(body: ValidationRequestBody | null | undefined): ValidationDispatch | ValidationFailure;
export {};