@omisego/omg-js-rootchain/src/validators/helpers.js

Module to interact with the Ethereum RootChain

const Joi = require('@hapi/joi')
const BN = require('bn.js')
const web3Utils = require('web3-utils')

const validateAddress = Joi.string().custom(value => {
  return web3Utils.isAddress(value)
})

const validateTxOption = Joi.object({
  gas: Joi.number().integer(),
  gasPrice: Joi.string(),
  privateKey: Joi.string(),
  from: validateAddress.required()
})

const validateBn = Joi.any().custom((value, helpers) => {
  if (!BN.isBN(value)) {
    return helpers.message(`${value} is not an instance of BN.js`)
  }
  return value
})

const validateAmount = Joi.alternatives().try(
  Joi.number().integer().required(),
  validateBn.required(),
  Joi.string().regex(/^\d+$/).required()
)

module.exports = {
  validateAddress,
  validateTxOption,
  validateBn,
  validateAmount
}