/// <reference types="node" />
import type { Class } from './utils';
export type Data = ArrayBuffer | Blob | Buffer | File | Uint8Array;
type DataName = 'ArrayBuffer' | 'Blob' | 'Buffer' | 'File' | 'Uint8Array';
export type ResourceMetadata = {
    mime?: string;
    name?: string;
    lastModified?: number;
};
export declare const assertNever: (_: never, argName: string) => never;
export declare function assertDataType(value: unknown, argName: string): asserts value is Data;
export declare const assertDataTypeClass: (value: unknown, argName: string) => void;
type AssertString = (arg: unknown, argName: string) => asserts arg is string;
export declare const assertString: AssertString;
export declare const assertNotEmptyString: AssertString;
export declare function assertInteger(arg: unknown, argName: string, isUnsigned: boolean): asserts arg is number;
export declare const getConstructor: <T extends Data>(instance: T) => Class<T>;
export declare const getConstructorName: (constructor: Record<string, any>) => DataName;
export declare const getDataLength: <T extends Data>(value: T) => number;
export declare function castData<T extends Data>(input: Data, options: {
    type: Class<T>;
} & ResourceMetadata, maxBytes?: number): Promise<T>;
export {};
//# sourceMappingURL=data-types.d.ts.map