declare namespace InternalBlobBinding {

interface BlobHandle {

slice(start: number, end: number): BlobHandle;

}

class FixedSizeBlobCopyJob {

constructor(handle: BlobHandle);

run(): ArrayBuffer | undefined;

ondone: (err: unknown, res?: ArrayBuffer) => void;

}

}

declare function InternalBinding(binding: 'blob'): {

createBlob(sources: Array<Uint8Array | InternalBlobBinding.BlobHandle>, length: number): InternalBlobBinding.BlobHandle;

FixedSizeBlobCopyJob: typeof InternalBlobBinding.FixedSizeBlobCopyJob;

getDataObject(id: string): [handle: InternalBlobBinding.BlobHandle | undefined, length: number, type: string] | undefined;

storeDataObject(id: string, handle: InternalBlobBinding.BlobHandle, size: number, type: string): void;

revokeDataObject(id: string): void;

};