import { ApiPromise } from '@polkadot/api';
import { ApiDecoration } from '@polkadot/api/types';
import type { HexString } from '@polkadot/util/types';
import { IBlock } from '@subql/node-core';
import { BlockHeader, LightSubstrateEvent, SubstrateBlock, SubstrateEvent, SubstrateExtrinsic } from '@subql/types';
export interface BlockContent {
    block: SubstrateBlock;
    extrinsics: SubstrateExtrinsic[];
    events: SubstrateEvent[];
}
export interface LightBlockContent {
    block: BlockHeader;
    events: LightSubstrateEvent[];
}
export type BestBlocks = Record<number, HexString>;
export type ApiAt = ApiDecoration<'promise'> & {
    rpc: ApiPromise['rpc'];
};
export declare function isFullBlock(block: BlockContent | LightBlockContent): block is BlockContent;
export declare function getBlockSize(block: IBlock<BlockContent | LightBlockContent>): number;