near-ca/dist/esm/beta.js

An SDK for controlling Ethereum Accounts from a Near Account.

import { requestRouter, toPayload } from "./utils";
import { isSignMethod, signMethods } from "./types";
/**
 * Removes the EIP-155 prefix from an address string
 *
 * @param eip155Address - The EIP-155 formatted address
 * @returns The address without the EIP-155 prefix
 */
function stripEip155Prefix(eip155Address) {
    return eip155Address.split(":").pop() ?? "";
}
/**
 * Features currently under development that will be migrated into the adapter class once refined.
 * These features are accessible through the adapter class as `adapter.beta.methodName(...)`
 */
export class Beta {
    adapter;
    /**
     * Creates a new Beta instance
     *
     * @param adapter - The NearEthAdapter instance to use
     */
    constructor(adapter) {
        this.adapter = adapter;
    }
    /**
     * Handles a WalletConnect session request by encoding it for NEAR
     *
     * @param request - The WalletConnect session request
     * @returns The encoded request for NEAR
     * @throws Error if the sign method is not supported
     */
    async handleSessionRequest(request) {
        const { chainId, request: { method, params }, } = request.params;
        if (!isSignMethod(method)) {
            throw new Error(`Unsupported sign method ${method}: Available sign methods ${signMethods}`);
        }
        const { evmMessage, hashToSign } = await requestRouter({
            method,
            chainId: parseInt(stripEip155Prefix(chainId)),
            params,
        });
        return {
            nearPayload: await this.adapter.mpcContract.encodeSignatureRequestTx({
                path: this.adapter.derivationPath,
                payload: toPayload(hashToSign),
                key_version: 0,
            }),
            evmMessage,
            hashToSign,
        };
    }
}