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-185
@@ -1,185 +0,0 @@
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'use strict';
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/* ------------------------------------------------------------------------ */
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const now = Date.now // TODO: figure out how to utilize performance.now () properly – it's not as easy as it does not return a unix timestamp...
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const microseconds = () => now () * 1000 // TODO: utilize performance.now for that purpose
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const milliseconds = now
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const seconds = () => Math.floor (now () / 1000)
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/* ------------------------------------------------------------------------ */
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const setTimeout_original = setTimeout
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const setTimeout_safe = (done, ms, setTimeout = setTimeout_original /* overrideable for mocking purposes */, targetTime = now () + ms) => {
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/* The built-in setTimeout function can fire its callback earlier than specified, so we
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need to ensure that it does not happen: sleep recursively until `targetTime` is reached... */
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let clearInnerTimeout = () => {}
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let active = true
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const id = setTimeout (() => {
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active = true
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const rest = targetTime - now ()
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if (rest > 0) {
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clearInnerTimeout = setTimeout_safe (done, rest, setTimeout, targetTime) // try sleep more
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} else {
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done ()
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}
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}, ms)
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return function clear () {
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if (active) {
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active = false // dunno if IDs are unique on various platforms, so it's better to rely on this flag to exclude the possible cancellation of the wrong timer (if called after completion)
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clearTimeout (id)
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}
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clearInnerTimeout ()
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}
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}
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/* ------------------------------------------------------------------------ */
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class TimedOut extends Error {
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constructor () {
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const message = 'timed out'
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super (message)
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this.constructor = TimedOut
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this.__proto__ = TimedOut.prototype
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this.message = message
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}
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}
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/* ------------------------------------------------------------------------ */
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const iso8601 = (timestamp) => {
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let _timestampNumber = undefined;
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if (typeof timestamp === 'number') {
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_timestampNumber = Math.floor (timestamp);
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} else {
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_timestampNumber = parseInt (timestamp, 10);
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}
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// undefined, null and lots of nasty non-numeric values yield NaN
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if (Number.isNaN (_timestampNumber) || _timestampNumber < 0) {
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return undefined;
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}
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// last line of defence
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try {
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return new Date (_timestampNumber).toISOString ();
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} catch (e) {
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return undefined;
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}
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}
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const parse8601 = (x) => {
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if (typeof x !== 'string' || !x) {
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return undefined;
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}
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if (x.match (/^[0-9]+$/)) {
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// a valid number in a string, not a date.
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return undefined;
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}
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if (x.indexOf ('-') < 0 || x.indexOf (':') < 0) { // no date can be without a dash and a colon
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return undefined;
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}
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// last line of defence
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try {
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const candidate = Date.parse (((x.indexOf ('+') >= 0) || (x.slice (-1) === 'Z')) ? x : (x + 'Z').replace (/\s(\d\d):/, 'T$1:'));
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if (Number.isNaN (candidate)) {
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return undefined;
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}
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return candidate;
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} catch (e) {
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return undefined;
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}
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}
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const parseDate = (x) => {
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if (typeof x !== 'string' || !x) {
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return undefined;
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}
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if (x.indexOf ('GMT') >= 0) {
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try {
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return Date.parse (x);
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} catch (e) {
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return undefined;
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}
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}
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return parse8601 (x);
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}
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const mdy = (timestamp, infix = '-') => {
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infix = infix || ''
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const date = new Date (timestamp)
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const Y = date.getUTCFullYear ().toString ()
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let m = date.getUTCMonth () + 1
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let d = date.getUTCDate ()
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m = m < 10 ? ('0' + m) : m.toString ()
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d = d < 10 ? ('0' + d) : d.toString ()
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return m + infix + d + infix + Y
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}
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const ymd = (timestamp, infix = '-') => {
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infix = infix || ''
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const date = new Date (timestamp)
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const Y = date.getUTCFullYear ().toString ()
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let m = date.getUTCMonth () + 1
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let d = date.getUTCDate ()
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m = m < 10 ? ('0' + m) : m.toString ()
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d = d < 10 ? ('0' + d) : d.toString ()
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return Y + infix + m + infix + d
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}
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const ymdhms = (timestamp, infix = ' ') => {
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const date = new Date (timestamp)
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const Y = date.getUTCFullYear ()
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let m = date.getUTCMonth () + 1
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let d = date.getUTCDate ()
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let H = date.getUTCHours ()
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let M = date.getUTCMinutes ()
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let S = date.getUTCSeconds ()
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m = m < 10 ? ('0' + m) : m
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d = d < 10 ? ('0' + d) : d
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H = H < 10 ? ('0' + H) : H
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M = M < 10 ? ('0' + M) : M
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S = S < 10 ? ('0' + S) : S
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return Y + '-' + m + '-' + d + infix + H + ':' + M + ':' + S
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}
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module.exports =
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{
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now
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, microseconds
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, milliseconds
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, seconds
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, iso8601
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, parse8601
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, parseDate
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, mdy
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, ymd
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, ymdhms
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, setTimeout_safe
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, sleep: ms => new Promise (resolve => setTimeout_safe (resolve, ms))
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, TimedOut
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, timeout: async (ms, promise) => {
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let clear = () => {}
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const expires = new Promise (resolve => (clear = setTimeout_safe (resolve, ms)))
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try {
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return await Promise.race ([promise, expires.then (() => { throw new TimedOut () })])
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} finally {
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clear () // fixes https://github.com/ccxt/ccxt/issues/749
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}
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}
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}
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/* ------------------------------------------------------------------------ */
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