EOS stake to vote

stake2vote.ts

/**
 * voteWeightToday computes the stake2vote weight for EOS, in order to compute the decaying value.
 */
 export function voteWeightToday(date: Date): number {
  const seconds_per_day = 86400;
  const block_timestamp_epoch = new Date(Date.UTC(2000, 0, 1, 0, 0, 0, 0)).getTime();

  return Math.floor( (date.getTime() - block_timestamp_epoch) / 1000 / (seconds_per_day * 7)) / 52;
}

/**
 * Convert EOS stake into decaying value
 *
 * @param {number} vote vote
 */
export function stake2vote( date: Date, staked: number ): number {
  return staked * Math.pow(2, voteWeightToday(date));
}

/**
 * Convert vote decay value into EOS stake
 *
 * @param {number} staked staked
 */
 export function vote2stake( date: Date, vote: number ): number {
  return vote / Math.pow(2, voteWeightToday(date));
}

(() => {
	const timestamp = new Date("2021-08-22T02:11:23Z");
	const last_vote_weight = 6636014682100090;
  const staked = vote2stake(timestamp, last_vote_weight);
  // => 1932337620.9129524
  console.log(staked);
})()