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metamask-extension/ui/app/pages/send/send-content/send-amount-row/amount-max-button/amount-max-button.utils.js
Patryk Łucka ee205b893f
Create custom addHexPrefix function (#9306)
* create custom addHexPrefix function

* switch to custom addHexPrefix

Co-authored-by: Mark Stacey <markjstacey@gmail.com>
Co-authored-by: Erik Marks <rekmarks@protonmail.com>
2020-11-06 13:18:00 -08:00

20 lines
614 B
JavaScript

import {
multiplyCurrencies,
subtractCurrencies,
} from '../../../../../helpers/utils/conversion-util'
import { addHexPrefix } from '../../../../../../../app/scripts/lib/util'
export function calcMaxAmount({ balance, gasTotal, sendToken, tokenBalance }) {
const { decimals } = sendToken || {}
const multiplier = Math.pow(10, Number(decimals || 0))
return sendToken
? multiplyCurrencies(tokenBalance, multiplier, {
toNumericBase: 'hex',
multiplicandBase: 16,
})
: subtractCurrencies(addHexPrefix(balance), addHexPrefix(gasTotal), {
toNumericBase: 'hex',
})
}