github.com/ethereum-optimism/optimism@v1.7.2/packages/core-utils/src/external/ethers/network.ts (about)

     1  import { Provider } from '@ethersproject/abstract-provider'
     2  
     3  export const getChainId = async (provider: Provider): Promise<number> => {
     4    const network = await provider.getNetwork()
     5    return network.chainId
     6  }