@tedcryptoorg/cosmos-signer/lib/esm/wallet/OfflineWallet.js

Cosmos Signer - A library for signing transactions for Cosmos SDK chains

import { Slip10RawIndex, pathToString } from '@cosmjs/crypto';
import BaseWallet from "./BaseWallet";
import { DirectSecp256k1HdWallet } from '@cosmjs/proto-signing';
export class OfflineWallet extends BaseWallet {
    mnemonic;
    logger;
    name = 'offline';
    label = 'Offline Wallet';
    keychangeEvent = 'offline_keystorechange';
    constructor(mnemonic, logger) {
        super({}, logger);
        this.mnemonic = mnemonic;
        this.logger = logger;
    }
    async connect(network) {
        try {
            await this.getSigner(network);
            return null;
        }
        catch (error) {
            this.logger?.error('Failed to connect to offline wallet', error);
        }
        throw new Error('Failed to connect to offline wallet');
    }
    async getKey() {
        throw new Error('Offline wallet does not have a key');
    }
    async getSigner(network) {
        if (!this.signer) {
            const hdPath = [
                Slip10RawIndex.hardened(44),
                Slip10RawIndex.hardened(Number(network.slip44)),
                Slip10RawIndex.hardened(0),
                Slip10RawIndex.normal(0),
                Slip10RawIndex.normal(0)
            ];
            if (Number(network.slip44) !== 118) {
                this.logger?.log('Using HD Path', pathToString(hdPath));
            }
            this.signer = await DirectSecp256k1HdWallet.fromMnemonic(this.mnemonic, {
                prefix: network.bech32_prefix,
                hdPaths: [hdPath]
            });
        }
        return this.signer;
    }
    signDirectSupport() {
        return true;
    }
    signAminoSupport() {
        return false;
    }
    async signAmino(...args) {
        throw new Error('Amino signing is not supported in offline mode');
    }
}