hatch-surf/node_modules/es-abstract/2018/MonthFromTime.js
Riley Zhang df378d33ef
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Co-Authored-By: Paperclip <noreply@paperclip.ing>
2026-06-25 05:20:46 +02:00

52 lines
1.1 KiB
JavaScript

'use strict';
var $RangeError = require('es-errors/range');
var DayWithinYear = require('./DayWithinYear');
var InLeapYear = require('./InLeapYear');
// https://262.ecma-international.org/5.1/#sec-15.9.1.4
module.exports = function MonthFromTime(t) {
var day = DayWithinYear(t);
if (0 <= day && day < 31) {
return 0;
}
var leap = InLeapYear(t);
if (31 <= day && day < (59 + leap)) {
return 1;
}
if ((59 + leap) <= day && day < (90 + leap)) {
return 2;
}
if ((90 + leap) <= day && day < (120 + leap)) {
return 3;
}
if ((120 + leap) <= day && day < (151 + leap)) {
return 4;
}
if ((151 + leap) <= day && day < (181 + leap)) {
return 5;
}
if ((181 + leap) <= day && day < (212 + leap)) {
return 6;
}
if ((212 + leap) <= day && day < (243 + leap)) {
return 7;
}
if ((243 + leap) <= day && day < (273 + leap)) {
return 8;
}
if ((273 + leap) <= day && day < (304 + leap)) {
return 9;
}
if ((304 + leap) <= day && day < (334 + leap)) {
return 10;
}
if ((334 + leap) <= day && day < (365 + leap)) {
return 11;
}
throw new $RangeError('Assertion failed: `day` is out of range');
};