metamask-extension/app/scripts/controllers/network/util.js

import {
  ROPSTEN,
  RINKEBY,
  KOVAN,
  MAINNET,
  GOERLI,
  ROPSTEN_CODE,
  RINKEBY_CODE,
  KOVAN_CODE,
  GOERLI_CODE,
  ROPSTEN_DISPLAY_NAME,
  RINKEBY_DISPLAY_NAME,
  KOVAN_DISPLAY_NAME,
  MAINNET_DISPLAY_NAME,
  GOERLI_DISPLAY_NAME,
} from './enums'

const networkToNameMap = {
  [ROPSTEN]: ROPSTEN_DISPLAY_NAME,
  [RINKEBY]: RINKEBY_DISPLAY_NAME,
  [KOVAN]: KOVAN_DISPLAY_NAME,
  [MAINNET]: MAINNET_DISPLAY_NAME,
  [GOERLI]: GOERLI_DISPLAY_NAME,
  [ROPSTEN_CODE]: ROPSTEN_DISPLAY_NAME,
  [RINKEBY_CODE]: RINKEBY_DISPLAY_NAME,
  [KOVAN_CODE]: KOVAN_DISPLAY_NAME,
  [GOERLI_CODE]: GOERLI_DISPLAY_NAME,
}

export const getNetworkDisplayName = key => networkToNameMap[key]

export function formatTxMetaForRpcResult (txMeta) {
  return {
    'blockHash': txMeta.txReceipt ? txMeta.txReceipt.blockHash : null,
    'blockNumber': txMeta.txReceipt ? txMeta.txReceipt.blockNumber : null,
    'from': txMeta.txParams.from,
    'gas': txMeta.txParams.gas,
    'gasPrice': txMeta.txParams.gasPrice,
    'hash': txMeta.hash,
    'input': txMeta.txParams.data || '0x',
    'nonce': txMeta.txParams.nonce,
    'to': txMeta.txParams.to,
    'transactionIndex': txMeta.txReceipt ? txMeta.txReceipt.transactionIndex : null,
    'value': txMeta.txParams.value || '0x0',
    'v': txMeta.v,
    'r': txMeta.r,
    's': txMeta.s,
  }
}