opensea-js/lib/sdk/tokens.js

TypeScript SDK for the OpenSea marketplace helps developers build new experiences using NFTs and our marketplace data

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.TokensManager = void 0;
const ethers_1 = require("ethers");
const types_1 = require("../types");
const chain_1 = require("../utils/chain");
/**
 * Token wrapping and unwrapping operations
 */
class TokensManager {
    constructor(context) {
        this.context = context;
    }
    /**
     * Wrap native asset into wrapped native asset (e.g. ETH into WETH, POL into WPOL).
     * Wrapped native assets are needed for making offers.
     * @param options
     * @param options.amountInEth Amount of native asset to wrap
     * @param options.accountAddress Address of the user's wallet containing the native asset
     */
    async wrapEth({ amountInEth, accountAddress, }) {
        await this.context.requireAccountIsAvailable(accountAddress);
        const value = (0, ethers_1.parseEther)(amountInEth.toString());
        this.context.dispatch(types_1.EventType.WrapEth, { accountAddress, amount: value });
        const wethContract = new ethers_1.Contract((0, chain_1.getNativeWrapTokenAddress)(this.context.chain), ["function deposit() payable"], this.context.signerOrProvider);
        try {
            const transaction = await wethContract.deposit({ value });
            await this.context.confirmTransaction(transaction.hash, types_1.EventType.WrapEth, "Wrapping native asset");
        }
        catch (error) {
            console.error(error);
            this.context.dispatch(types_1.EventType.TransactionDenied, {
                error,
                accountAddress,
            });
        }
    }
    /**
     * Unwrap wrapped native asset into native asset (e.g. WETH into ETH, WPOL into POL).
     * Emits the `UnwrapWeth` event when the transaction is prompted.
     * @param options
     * @param options.amountInEth How much wrapped native asset to unwrap
     * @param options.accountAddress Address of the user's wallet containing the wrapped native asset
     */
    async unwrapWeth({ amountInEth, accountAddress, }) {
        await this.context.requireAccountIsAvailable(accountAddress);
        const amount = (0, ethers_1.parseEther)(amountInEth.toString());
        this.context.dispatch(types_1.EventType.UnwrapWeth, { accountAddress, amount });
        const wethContract = new ethers_1.Contract((0, chain_1.getNativeWrapTokenAddress)(this.context.chain), ["function withdraw(uint wad) public"], this.context.signerOrProvider);
        try {
            const transaction = await wethContract.withdraw(amount);
            await this.context.confirmTransaction(transaction.hash, types_1.EventType.UnwrapWeth, "Unwrapping wrapped native asset");
        }
        catch (error) {
            console.error(error);
            this.context.dispatch(types_1.EventType.TransactionDenied, {
                error,
                accountAddress,
            });
        }
    }
}
exports.TokensManager = TokensManager;
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