@erc7824/nitrolite/dist/client/state.js

The Nitrolite SDK empowers developers to build high-performance, scalable web3 applications using state channels. It's designed to provide near-instant transactions and significantly improved user experiences by minimizing direct blockchain interactions.

"use strict";
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    Object.defineProperty(o, "default", { enumerable: true, value: v });
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    o["default"] = v;
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Object.defineProperty(exports, "__esModule", { value: true });
exports._prepareAndSignInitialState = _prepareAndSignInitialState;
exports._prepareAndSignChallengeState = _prepareAndSignChallengeState;
exports._prepareAndSignResizeState = _prepareAndSignResizeState;
exports._prepareAndSignFinalState = _prepareAndSignFinalState;
const Errors = __importStar(require("../errors"));
const utils_1 = require("../utils");
const types_1 = require("./types");
async function _prepareAndSignInitialState(deps, params) {
    const { channel, unsignedInitialState, serverSignature } = params;
    if (!unsignedInitialState) {
        throw new Errors.MissingParameterError('Initial state is required for creating the channel');
    }
    if (!unsignedInitialState.data) {
        throw new Errors.MissingParameterError('State data is required for creating the channel');
    }
    if (!unsignedInitialState.allocations || unsignedInitialState.allocations.length !== 2) {
        throw new Errors.InvalidParameterError('Initial allocation amounts must be provided for both participants.');
    }
    if (!channel) {
        throw new Errors.MissingParameterError("Channel's fixed part is required for creating the channel");
    }
    if (!channel?.adjudicator) {
        throw new Errors.MissingParameterError('Adjudicator address is required for creating the channel');
    }
    if (!channel.participants || channel.participants.length !== 2) {
        throw new Errors.InvalidParameterError('Channel must have exactly two participants.');
    }
    const channelId = (0, utils_1.getChannelId)(channel, deps.chainId);
    const accountSignature = await deps.stateSigner.signState(channelId, unsignedInitialState);
    const signedInitialState = {
        ...unsignedInitialState,
        sigs: [accountSignature, serverSignature],
    };
    return { initialState: signedInitialState, channelId };
}
async function _prepareAndSignChallengeState(deps, params) {
    const { channelId, candidateState, proofStates = [] } = params;
    const challengeMsg = (0, utils_1.getPackedChallengeState)(channelId, candidateState);
    const challengerSig = await deps.stateSigner.signRawMessage(challengeMsg);
    return { channelId, candidateState, proofs: proofStates, challengerSig };
}
async function _prepareAndSignResizeState(deps, params) {
    const { resizeState, proofStates } = params;
    if (!resizeState.data) {
        throw new Errors.MissingParameterError('State data is required for closing the channel.');
    }
    const channelId = resizeState.channelId;
    const stateToSign = {
        data: resizeState.data,
        intent: resizeState.intent,
        allocations: resizeState.allocations,
        version: resizeState.version,
        sigs: [],
    };
    const accountSignature = await deps.stateSigner.signState(channelId, stateToSign);
    const resizeStateWithSigs = {
        ...stateToSign,
        sigs: [accountSignature, resizeState.serverSignature],
    };
    let proofs = [...proofStates];
    return { resizeStateWithSigs, proofs, channelId };
}
async function _prepareAndSignFinalState(deps, params) {
    const { stateData, finalState } = params;
    if (!stateData) {
        throw new Errors.MissingParameterError('State data is required for closing the channel.');
    }
    const channelId = finalState.channelId;
    const stateToSign = {
        data: stateData,
        intent: types_1.StateIntent.FINALIZE,
        allocations: finalState.allocations,
        version: finalState.version,
        sigs: [],
    };
    const accountSignature = await deps.stateSigner.signState(channelId, stateToSign);
    const finalStateWithSigs = {
        ...stateToSign,
        sigs: [accountSignature, finalState.serverSignature],
    };
    return { finalStateWithSigs, channelId };
}