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A comprehensive Web3 library for interacting with smart contracts on Ethereum using Elixir.

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ethers lib ethers signer json_rpc.ex
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lib/ethers/signer/json_rpc.ex 

defmodule Ethers.Signer.JsonRPC do

  @moduledoc """

  Signer capable of signing transactions with a JSON RPC server

  capable of `eth_signTransaction` and `eth_accounts` RPC functions.



  ## Signer Options



  - `:rpc_module`: The RPC Module to use. (Optional, Defaults to `Ethereumex.HttpClient`)

  - `:url`: The RPC URL to use. (Optional)



  ** All other options will be passed to the RPC module `request/3` function in

  the third argument **

  """



  @behaviour Ethers.Signer



  alias Ethers.Transaction



  @impl true

  def sign_transaction(%Transaction{} = tx, opts) do

    tx_map = Transaction.to_map(tx)

    {rpc_module, opts} = Keyword.pop(opts, :rpc_module, Ethereumex.HttpClient)



    rpc_module.request("eth_signTransaction", [tx_map], opts)

  end



  @impl true

  def accounts(opts) do

    {rpc_module, opts} = Keyword.pop(opts, :rpc_module, Ethereumex.HttpClient)



    rpc_module.request("eth_accounts", [], opts)

  end

end