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const ethUtil = require('ethereumjs-util')
const { conversionUtil, multiplyCurrencies } = require('../../conversion-util')
const MIN_GAS_PRICE_DEC = '0'
const MIN_GAS_PRICE_HEX = (parseInt(MIN_GAS_PRICE_DEC)).toString(16)
const MIN_GAS_LIMIT_DEC = '21000'
const MIN_GAS_LIMIT_HEX = (parseInt(MIN_GAS_LIMIT_DEC)).toString(16)
const MIN_GAS_PRICE_GWEI = ethUtil.addHexPrefix(conversionUtil(MIN_GAS_PRICE_HEX, {
fromDenomination: 'WEI',
toDenomination: 'GWEI',
fromNumericBase: 'hex',
toNumericBase: 'hex',
numberOfDecimals: 1,
}))
const MIN_GAS_TOTAL = multiplyCurrencies(MIN_GAS_LIMIT_HEX, MIN_GAS_PRICE_HEX, {
toNumericBase: 'hex',
multiplicandBase: 16,
multiplierBase: 16,
})
const TOKEN_TRANSFER_FUNCTION_SIGNATURE = '0xa9059cbb'
module.exports = {
MIN_GAS_PRICE_GWEI,
MIN_GAS_PRICE_HEX,
MIN_GAS_PRICE_DEC,
MIN_GAS_LIMIT_HEX,
MIN_GAS_LIMIT_DEC,
MIN_GAS_TOTAL,
TOKEN_TRANSFER_FUNCTION_SIGNATURE,
}
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