time-to-botec

Benchmark sampling in different programming languages
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seconds_in_year.js (1958B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 'use strict';
     20 
     21 // MODULES //
     22 
     23 var isDateObject = require( '@stdlib/assert/is-date-object' );
     24 var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
     25 var isLeapYear = require( '@stdlib/assert/is-leap-year' );
     26 
     27 
     28 // VARIABLES //
     29 
     30 var NON_LEAP_YEAR = 31536000|0; // 365 * 86400
     31 var LEAP_YEAR = 31622400|0; // 366 * 86400
     32 
     33 
     34 // MAIN //
     35 
     36 /**
     37 * Returns the number of seconds in a year.
     38 *
     39 * @param {(integer|Date)} value - year or `Date` object
     40 * @throws {TypeError} must provide either an integer or a `Date` object
     41 * @returns {integer} number of seconds in a year
     42 *
     43 * @example
     44 * var num = secondsInYear();
     45 * // returns <number>
     46 *
     47 * @example
     48 * var num = secondsInYear( 2016 );
     49 * // returns 31622400
     50 *
     51 * @example
     52 * var num = secondsInYear( 2017 );
     53 * // returns 31536000
     54 */
     55 function secondsInYear( value ) {
     56 	var yr;
     57 	if ( arguments.length ) {
     58 		if ( isDateObject( value ) ) {
     59 			yr = value.getFullYear();
     60 		} else if ( isInteger( value ) ) {
     61 			yr = value;
     62 		} else {
     63 			throw new TypeError( 'invalid argument. Must provide either an integer or a `Date` object. Value: `'+value+'`.' );
     64 		}
     65 	} else {
     66 		// Note: cannot cache as application could cross over into a new year:
     67 		yr = ( new Date() ).getFullYear();
     68 	}
     69 	if ( isLeapYear( yr ) ) {
     70 		return LEAP_YEAR;
     71 	}
     72 	return NON_LEAP_YEAR;
     73 }
     74 
     75 
     76 // EXPORTS //
     77 
     78 module.exports = secondsInYear;