@atomicport/evm/dist/esm/EvmHtlc.js

Support Cross-Chain-Swap with HTLC on any blockchains

import HashedTimelockAbi from './abis/HashedTimelock.json';
import { BaseHTLCService } from './models/BaseHtlc';
/**
 * HTLC operations on the Ethereum Test Net.
 * Passing a value to the constructor will overwrite the specified value.
 */
export class EvmHtlc extends BaseHTLCService {
    constructor(providerEndpoint, contractAddress) {
        super(providerEndpoint, contractAddress, HashedTimelockAbi.abi);
    }
    /**
     * Issue HTLC and obtain the key at the time of issue
     */
    async lock(recipientAddress, senderAddress, secret, amount, options) {
        const value = this.web3.utils.toWei(this.web3.utils.toBN(amount), 'finney');
        const lockPeriod = Math.floor(Date.now() / 1000) + (options?.lockSeconds ?? 3600);
        const gas = options?.gasLimit ?? 1000000;
        return await this.contract.methods
            .newContract(recipientAddress, secret, lockPeriod)
            .send({ from: senderAddress, gas: gas.toString(), value });
    }
    /**
     * Receive tokens stored under the key at the time of HTLC generation
     */
    async withDraw(contractId, senderAddress, proof, gasLimit) {
        const gas = gasLimit ?? 1000000;
        const result = await this.contract.methods
            .withdraw(contractId, proof)
            .send({ from: senderAddress, gas: gas.toString() });
        return { result: result };
    }
}