@rhino.fi/client-js/src/lib/dvf/token/getTokenAddressFromTokenInfoOrThrow.js

const DVFError = require('../DVFError')

module.exports = (tokenInfo, chain) => {
  const tokenAddress = tokenInfo.tokenAddressPerChain[chain]
  // Token unsupported for that chain if not defined
  if (!tokenAddress) {
    throw new DVFError('UNSUPPORTED_TOKEN_FOR_CHAIN', { tokenInfo, chain })
    // ETH for ETHEREUM, MATIC for Polygon/Matic...
    // 'native' case kept for retro-compatibility / potential revert cases but means the same thing
  } else if (
    tokenAddress === 'native'
    || tokenAddress === '0x0000000000000000000000000000000000000000'
  ) {
    return undefined
  }
  // Standard ERC20 address
  return tokenAddress
}