export declare const RE_RECORD_ID: RegExp;
/**
 * Sorts records in a list according to a given ordering.
 *
 * @param  {String} order The ordering, eg. `-last_modified`.
 * @param  {Array}  list  The collection to order.
 * @return {Array}
 */
export declare function sortObjects<T extends {
    [key: string]: any;
}>(order: string, list: T[]): T[];
/**
 * Test if a single object matches all given filters.
 *
 * @param  {Object} filters  The filters object.
 * @param  {Object} entry    The object to filter.
 * @return {Boolean}
 */
export declare function filterObject<T extends {
    [key: string]: any;
}>(filters: {
    [key: string]: any;
}, entry: T): boolean;
/**
 * Filters records in a list matching all given filters.
 *
 * @param  {Object} filters  The filters object.
 * @param  {Array}  list     The collection to filter.
 * @return {Array}
 */
export declare function filterObjects<T extends {
    [key: string]: any;
}>(filters: {
    [key: string]: any;
}, list: T[]): T[];
/**
 * Resolves a list of functions sequentially, which can be sync or async; in
 * case of async, functions must return a promise.
 *
 * @param  {Array} fns  The list of functions.
 * @param  {Any}   init The initial value.
 * @return {Promise}
 */
export declare function waterfall(fns: ((...args: any[]) => unknown)[], init?: unknown): Promise<unknown>;
/**
 * Simple deep object comparison function. This only supports comparison of
 * serializable JavaScript objects.
 *
 * @param  {Object} a The source object.
 * @param  {Object} b The compared object.
 * @return {Boolean}
 */
export declare function deepEqual(a: any, b: any): boolean;
/**
 * Return an object without the specified keys.
 *
 * @param  {Object} obj        The original object.
 * @param  {Array}  keys       The list of keys to exclude.
 * @return {Object}            A copy without the specified keys.
 */
export declare function omitKeys<T extends {
    [key: string]: unknown;
}, K extends string>(obj: T, keys?: K[]): Omit<T, K>;
export declare function arrayEqual(a: unknown[], b: unknown[]): boolean;
export declare function transformSubObjectFilters(filtersObj: {
    [key: string]: any;
}): {};
/**
 * Deeply access an object's properties
 * @param obj - The object whose property you want to compare
 * @param key - A dot notation path to the property you want to compare
 */
export declare function getDeepKey(obj: any, key: string): unknown;
/**
 * Chunks an array into n pieces.
 *
 * @private
 * @param  {Array}  array
 * @param  {Number} n
 * @return {Array}
 */
export declare function partition<T>(array: T[], n: number): T[][];
/**
 * Returns a Promise always resolving after the specified amount in milliseconds.
 *
 * @return Promise<void>
 */
export declare function delay(ms: number): Promise<void>;
interface Entity {
    id: string;
}
/**
 * Always returns a resource data object from the provided argument.
 *
 * @private
 * @param  {Object|String} resource
 * @return {Object}
 */
export declare function toDataBody<T extends Entity>(resource: T | string): Entity;
/**
 * Transforms an object into an URL query string, stripping out any undefined
 * values.
 *
 * @param  {Object} obj
 * @return {String}
 */
export declare function qsify(obj: {
    [key: string]: any;
}): string;
/**
 * Checks if a version is within the provided range.
 *
 * @param  {String} version    The version to check.
 * @param  {String} minVersion The minimum supported version (inclusive).
 * @param  {String} maxVersion The minimum supported version (exclusive).
 * @throws {Error} If the version is outside of the provided range.
 */
export declare function checkVersion(version: string, minVersion: string, maxVersion: string): void;
type DecoratorReturn = (target: any, key: string, descriptor: TypedPropertyDescriptor<(...args: any[]) => any>) => {
    configurable: boolean;
    get(): (...args: any) => Promise<any>;
};
/**
 * Generates a decorator function ensuring a version check is performed against
 * the provided requirements before executing it.
 *
 * @param  {String} min The required min version (inclusive).
 * @param  {String} max The required max version (inclusive).
 * @return {Function}
 */
export declare function support(min: string, max: string): DecoratorReturn;
/**
 * Generates a decorator function ensuring that the specified capabilities are
 * available on the server before executing it.
 *
 * @param  {Array<String>} capabilities The required capabilities.
 * @return {Function}
 */
export declare function capable(capabilities: string[]): DecoratorReturn;
/**
 * Generates a decorator function ensuring an operation is not performed from
 * within a batch request.
 *
 * @param  {String} message The error message to throw.
 * @return {Function}
 */
export declare function nobatch(message: string): DecoratorReturn;
/**
 * Returns true if the specified value is an object (i.e. not an array nor null).
 * @param  {Object} thing The value to inspect.
 * @return {bool}
 */
export declare function isObject(thing: unknown): boolean;
interface TypedDataURL {
    type: string;
    base64: string;
    [key: string]: string;
}
/**
 * Parses a data url.
 * @param  {String} dataURL The data url.
 * @return {Object}
 */
export declare function parseDataURL(dataURL: string): TypedDataURL;
/**
 * Extracts file information from a data url.
 * @param  {String} dataURL The data url.
 * @return {Object}
 */
export declare function extractFileInfo(dataURL: string): {
    blob: Blob;
    name: string;
};
/**
 * Creates a FormData instance from a data url and an existing JSON response
 * body.
 * @param  {String} dataURL            The data url.
 * @param  {Object} body               The response body.
 * @param  {Object} [options={}]       The options object.
 * @param  {Object} [options.filename] Force attachment file name.
 * @return {FormData}
 */
export declare function createFormData(dataURL: string, body: {
    [key: string]: any;
}, options?: {
    filename?: string;
}): FormData;
/**
 * Clones an object with all its undefined keys removed.
 * @private
 */
export declare function cleanUndefinedProperties(obj: {
    [key: string]: any;
}): {
    [key: string]: any;
};
/**
 * Handle common query parameters for Kinto requests.
 *
 * @param  {String}  [path]  The endpoint base path.
 * @param  {Array}   [options.fields]    Fields to limit the
 *   request to.
 * @param  {Object}  [options.query={}]  Additional query arguments.
 */
export declare function addEndpointOptions(path: string, options?: {
    fields?: string[];
    query?: {
        [key: string]: string;
    };
}): string;
/**
 * Replace authorization header with an obscured version
 */
export declare function obscureAuthorizationHeader(headers: HeadersInit): {
    [key: string]: string;
};
export {};