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nym21
96 lines
2.6 KiB
JavaScript
96 lines
2.6 KiB
JavaScript
export const DIFFICULTY_EPOCH_BLOCKS = 2_016;
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export const HALVING_EPOCH_BLOCKS = 210_000;
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export const MAX_BLOCK_WEIGHT = 4_000_000;
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const RELATIVE_TIME = new Intl.RelativeTimeFormat(undefined);
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const RELATIVE_UNITS = /** @type {const} */ ([
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["year", 31_557_600],
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["month", 2_629_800],
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["day", 86_400],
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["hour", 3_600],
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["minute", 60],
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]);
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/** @param {number} value */
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export function formatNumber(value) {
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return value.toLocaleString();
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}
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/** @param {number | undefined} value */
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export function formatPoolBlockNumber(value) {
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// Temporary compatibility with servers that do not include pool.blockNumber yet.
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return `#${formatNumber(value ?? 0)}`;
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}
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/** @param {number} unixSeconds */
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export function formatDateTime(unixSeconds) {
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return new Date(unixSeconds * 1_000).toLocaleString(undefined, {
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dateStyle: "medium",
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timeStyle: "medium",
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});
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}
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/** @param {number} unixSeconds */
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export function formatDateAndAge(unixSeconds) {
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const date = new Date(unixSeconds * 1_000).toLocaleDateString(undefined, {
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dateStyle: "medium",
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});
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const difference = unixSeconds - Date.now() / 1_000;
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const absolute = Math.abs(difference);
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if (absolute < 60) return `${date} · just now`;
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const [unit, seconds] = RELATIVE_UNITS.find(([, duration]) => {
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return absolute >= duration;
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}) ?? RELATIVE_UNITS.at(-1);
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return `${date} · ${RELATIVE_TIME.format(Math.trunc(difference / seconds), unit)}`;
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}
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/** @param {number} bytes */
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export function formatBytes(bytes) {
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return bytes >= 1_000_000
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? `${(bytes / 1_000_000).toFixed(2)} MB`
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: `${formatNumber(bytes)} B`;
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}
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/** @param {number} weight */
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export function formatWeight(weight) {
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return weight >= 1_000_000
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? `${(weight / 1_000_000).toFixed(2)} MWU`
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: `${formatNumber(weight)} WU`;
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}
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/** @param {number} weight */
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export function formatBlockFill(weight) {
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return `${((weight / MAX_BLOCK_WEIGHT) * 100).toFixed(1)}%`;
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}
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/** @param {number} height @param {number} length */
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export function getEpochProgress(height, length) {
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const blocks = (height % length) + 1;
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return /** @type {const} */ ({
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number: Math.floor(height / length) + 1,
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blocks,
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remaining: length - blocks,
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ratio: blocks / length,
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});
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}
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/** @param {number} height @param {number} length */
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export function formatEpoch(height, length) {
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const progress = getEpochProgress(height, length);
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return `#${formatNumber(progress.number)} · ${(progress.ratio * 100).toFixed(1)}%`;
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}
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/** @param {string} raw */
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export function getCoinbaseMessage(raw) {
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return (raw.match(/[\x20-\x7e]{2,}/g) ?? [])
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.map((value) => value.trim())
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.filter((value) => /[A-Za-z0-9]/.test(value))
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.join(" · ");
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}
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