@ledgerhq/coin-near/lib-es/signOperation.js

Near Coin integration

import { FeeNotLoaded } from "@ledgerhq/errors";
import { BigNumber } from "bignumber.js";
import * as nearAPI from "near-api-js";
import { Observable } from "rxjs";
import { buildOptimisticOperation } from "./buildOptimisticOperation";
import { buildTransaction } from "./buildTransaction";
/**
 * Sign Transaction with Ledger hardware
 */
export const buildSignOperation = (signerContext) => ({ account, transaction, deviceId, }) => new Observable(o => {
    async function main() {
        o.next({ type: "device-signature-requested" });
        if (!transaction.fees) {
            throw new FeeNotLoaded();
        }
        const { publicKey } = await signerContext(deviceId, signer => signer.getAddress(account.freshAddressPath));
        const unsigned = await buildTransaction(account, transaction, publicKey);
        const response = await signerContext(deviceId, signer => signer.signTransaction(unsigned.encode(), account.freshAddressPath));
        const signedTransaction = new nearAPI.transactions.SignedTransaction({
            transaction: unsigned,
            signature: new nearAPI.transactions.Signature({
                keyType: unsigned.publicKey.keyType,
                data: response,
            }),
        });
        o.next({ type: "device-signature-granted" });
        const operation = buildOptimisticOperation(account, transaction, transaction.fees ?? new BigNumber(0));
        const signedSerializedTx = signedTransaction.encode();
        o.next({
            type: "signed",
            signedOperation: {
                operation,
                signature: Buffer.from(signedSerializedTx).toString("base64"),
            },
        });
    }
    main().then(() => o.complete(), e => o.error(e));
});
export default buildSignOperation;
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