import type { FirmwareArtifactReader, FirmwareArtifactReference } from '../../types/api/firmwareUpdate';
export declare const MAX_FIRMWARE_ARTIFACT_READ_BYTES: number;
export interface FirmwareByteSource {
    readonly size: number;
    readAt(offset: number, length: number): Promise<ArrayBuffer>;
    close(): Promise<void>;
}
export declare const assertFirmwareArtifactReference: (artifact: FirmwareArtifactReference) => FirmwareArtifactReference;
export declare const readFirmwareByteSourceFully: (source: FirmwareByteSource) => Promise<ArrayBuffer>;
export declare const readVerifiedFirmwareArtifact: ({ artifact, reader, }: {
    artifact: FirmwareArtifactReference;
    reader: FirmwareArtifactReader;
}) => Promise<ArrayBuffer>;
export declare const openFirmwareByteSource: ({ binary, artifact, reader, }: {
    binary?: ArrayBuffer | undefined;
    artifact?: FirmwareArtifactReference | undefined;
    reader?: FirmwareArtifactReader | undefined;
}) => Promise<FirmwareByteSource | null>;
export declare const writeFirmwareByteSource: ({ source, chunkSize, write, }: {
    source: FirmwareByteSource;
    chunkSize: number;
    write: (input: {
        data: ArrayBuffer;
        sourceOffset: number;
        length: number;
        first: boolean;
    }) => Promise<number>;
}) => Promise<number>;
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