types#ChainProperties TypeScript Examples

The following examples show how to use types#ChainProperties. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: chainProps.ts From contracts-ui with GNU General Public License v3.0

6 votes

export async function getChainProperties(api: ApiPromise): Promise<ChainProperties | null> {
  const [chainProperties, systemName, systemVersion, systemChain, systemChainType] =
    await Promise.all([
      api.rpc.system.properties(),
      api.rpc.system.name(),
      api.rpc.system.version(),
      (await api.rpc.system.chain()).toString(),
      api.rpc.system.chainType
        ? api.rpc.system.chainType()
        : Promise.resolve(registry.createType('ChainType', 'Live')),
      api.rpc.system,
    ]);

  const result = {
    systemName: systemName.toString(),
    systemVersion: systemVersion.toString(),
    systemChainType,
    systemChain,
    tokenDecimals: chainProperties.tokenDecimals.isSome
      ? chainProperties.tokenDecimals.unwrap().toArray()[0].toNumber()
      : DEFAULT_DECIMALS,
    tokenSymbol: chainProperties.tokenSymbol.isSome
      ? chainProperties.tokenSymbol
          .unwrap()
          .toArray()
          .map(s => s.toString())[0]
      : 'Unit',
  };

  return result;
}