Function getBlockByHeight

packages/node/src/utils/substrate.ts:299–322

(
  api: ApiPromise,
  height: number,
)

 */

export async function getBlockByHeight(
  api: ApiPromise,
  height: number,
): Promise<SignedBlock> {
  const blockHash = await api.rpc.chain.getBlockHash(height).catch((e) => {
    logger.error(`failed to fetch BlockHash ${height}`);
    throw ApiPromiseConnection.handleError(e);
  });

  const block = await api.rpc.chain.getBlock(blockHash).catch((e) => {
    logger.error(
      `failed to fetch Block hash="${blockHash}" height="${height}"${getApiDecodeErrMsg(e.message)}`,
    );
    throw ApiPromiseConnection.handleError(e);
  });

  // validate block is valid
  if (block.block.header.hash.toHex() !== blockHash.toHex()) {
    throw new Error(
      `fetched block header hash ${block.block.header.hash.toHex()} is not match with blockHash ${blockHash.toHex()} at block ${height}. This is likely a problem with the rpc provider.`,
    );
  }
  return block;
}

export async function getHeaderByHeight(
  api: ApiPromise,