timing-provider/build/es2019/factories/update-timing-state-vector.js

An implementation of the timing provider specification.

export const createUpdateTimingStateVector = (filterTimingStateVectorUpdate, performance, translateTimingStateVector) => {
    return (timingStateVector, timingStateVectorUpdate) => {
        const filteredTimingStateVectorUpdate = filterTimingStateVectorUpdate(timingStateVectorUpdate);
        const translatedTimingStateVector = translateTimingStateVector(timingStateVector, performance.now() / 1000 - timingStateVector.timestamp);
        for (const [key, value] of Object.entries(filteredTimingStateVectorUpdate)) {
            if (value !== translatedTimingStateVector[key]) {
                return { ...translatedTimingStateVector, ...filteredTimingStateVectorUpdate };
            }
        }
        return null;
    };
};
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