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// Adapted from https://github.com/zeit/ms/blob/master/index.js// Copyright (c) 2016 Zeit, Inc. MIT License// Copyright (c) 2018 Kevin "Kun" Kassimo Qian. MIT License
const s = 1000;const m = s * 60;const h = m * 60;const d = h * 24;const w = d * 7;const y = d * 365.25;
/** Parse or format the given `val`. * * Options: * *  - `long` verbose formatting [false] */
export function ms(  val: string | number,  options?: { [key: string]: any },): string | number | undefined {  switch (typeof val) {    case "string":      if ((val).length > 0) {        return parse(val);      }      break;    case "number":      if (!isNaN(val)) {        return options && options!.long ? fmtLong(val) : fmtShort(val);      }  }  throw new Error(    "val is not a non-empty string or a valid number. val=" +      JSON.stringify(val),  );}
/** Parse the given `str` and return milliseconds. */
function parse(str: string): number | undefined {  if (str.length > 100) {    return;  }  const match =    /^((?:\d+)?-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i      .exec(        str,      );  if (!match) {    return;  }  const n = parseFloat(match[1]);  const type = (match[2] || "ms").toLowerCase();  switch (type) {    case "years":    case "year":    case "yrs":    case "yr":    case "y":      return n * y;    case "weeks":    case "week":    case "w":      return n * w;    case "days":    case "day":    case "d":      return n * d;    case "hours":    case "hour":    case "hrs":    case "hr":    case "h":      return n * h;    case "minutes":    case "minute":    case "mins":    case "min":    case "m":      return n * m;    case "seconds":    case "second":    case "secs":    case "sec":    case "s":      return n * s;    case "milliseconds":    case "millisecond":    case "msecs":    case "msec":    case "ms":      return n;    default:      return undefined;  }}
/** Short format for `ms`. */
function fmtShort(ms: number): string {  const msAbs = Math.abs(ms);  if (msAbs >= d) {    return Math.round(ms / d) + "d";  }  if (msAbs >= h) {    return Math.round(ms / h) + "h";  }  if (msAbs >= m) {    return Math.round(ms / m) + "m";  }  if (msAbs >= s) {    return Math.round(ms / s) + "s";  }  return ms + "ms";}
/** Long format for `ms`. */
function fmtLong(ms: number): string {  const msAbs = Math.abs(ms);  if (msAbs >= d) {    return plural(ms, msAbs, d, "day");  }  if (msAbs >= h) {    return plural(ms, msAbs, h, "hour");  }  if (msAbs >= m) {    return plural(ms, msAbs, m, "minute");  }  if (msAbs >= s) {    return plural(ms, msAbs, s, "second");  }  return ms + " ms";}
/** Pluralization helper. */
function plural(ms: number, msAbs: number, n: number, name: string) {  const isPlural = msAbs >= n * 1.5;  return Math.round(ms / n) + " " + name + (isPlural ? "s" : "");}