@ledgerhq/coin-algorand/lib-es/getFeesForTransaction.js

Ledger Algorand Coin integration

import { BigNumber } from "bignumber.js";
import algorandAPI from "./api";
import { buildTransactionPayload, encodeToSign } from "./buildTransaction";
// This is only true for a single signature. If we ever support different type of signatures
// (e.g multi signatures), we will have to add the correct corresponding number of bytes.
const SINGLE_SIGNATURE_SIZE = 71;
export const getEstimatedFees = async (account, transaction) => {
    const params = await algorandAPI.getTransactionParams();
    let suggestedFees = 0;
    if (params.fee) {
        const payload = await buildTransactionPayload(account, transaction);
        const encoded = encodeToSign(payload);
        suggestedFees = params.fee * (Buffer.from(encoded, "hex").length + SINGLE_SIGNATURE_SIZE);
    }
    return new BigNumber(Math.max(suggestedFees, params.minFee));
};
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