@ledgerhq/coin-multiversx/lib-es/logic.js

Ledger MultiversX Coin integration

import { decode, fromWords } from "bech32";
import BigNumber from "bignumber.js";
/**
 * The human-readable-part of the bech32 addresses.
 */
const HRP = "erd";
/**
 * The length (in bytes) of a public key (from which a bech32 address can be obtained).
 */
const PUBKEY_LENGTH = 32;
function fromBech32(value) {
    let decoded;
    try {
        decoded = decode(value);
    }
    catch {
        throw new Error("Erd address can't be created");
    }
    const prefix = decoded.prefix;
    if (prefix !== HRP) {
        throw new Error("Bad HRP");
    }
    const pubkey = Buffer.from(fromWords(decoded.words));
    if (pubkey.length !== PUBKEY_LENGTH) {
        throw new Error("Erd address can't be created");
    }
    return value;
}
/**
 * Returns true if address is a valid bech32
 *
 * @param {string} address
 */
export const isValidAddress = (address) => {
    try {
        fromBech32(address);
        return true;
    }
    catch {
        return false;
    }
};
export const isSelfTransaction = (a, t) => {
    return t.recipient === a.freshAddress;
};
// For some transaction modes the amount doesn't belong to the account's balance
export const isAmountSpentFromBalance = (mode) => {
    return ["send", "delegate"].includes(mode);
};
export const computeDelegationBalance = (delegations) => {
    let totalDelegationBalance = new BigNumber(0);
    for (const delegation of delegations) {
        let delegationBalance = new BigNumber(delegation.userActiveStake).plus(new BigNumber(delegation.claimableRewards));
        for (const undelegation of delegation.userUndelegatedList) {
            delegationBalance = delegationBalance.plus(new BigNumber(undelegation.amount));
        }
        totalDelegationBalance = totalDelegationBalance.plus(delegationBalance);
    }
    return totalDelegationBalance;
};
export const addPrefixToken = (tokenId) => `multiversx/esdt/${tokenId}`;
export const extractTokenId = (tokenId) => {
    return tokenId.split("/")[2];
};
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