@ceramicnetwork/core/lib/stream-loading/apply-tip-helper.js

Typescript implementation of the Ceramic protocol

import { StreamUtils } from '@ceramicnetwork/common';
export async function applyTipToState(logSyncer, anchorTimestampExtractor, stateManipulator, state, tip, opts) {
    const streamID = StreamUtils.streamIdFromState(state);
    const logWithoutTimestamps = await logSyncer.syncLogUntilMatch(streamID, tip, state.log.map((logEntry) => logEntry.cid));
    const logWithTimestamps = await anchorTimestampExtractor.verifyAnchorAndApplyTimestamps(streamID, logWithoutTimestamps);
    return stateManipulator.applyLogToState(state, logWithTimestamps, opts);
}
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