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- 'use strict';
- var $TypeError = require('es-errors/type');
- var ToIntegerOrInfinity = require('./ToIntegerOrInfinity');
- var isNaN = require('../helpers/isNaN');
- // https://262.ecma-international.org/15.0/#sec-makefullyear
- module.exports = function MakeFullYear(year) {
- if (typeof year !== 'number') {
- throw new $TypeError('Assertion failed: `year` must be a Number');
- }
- if (isNaN(year)) {
- return NaN; // step 1
- }
- var truncated = ToIntegerOrInfinity(year); // step 2
- if (0 <= truncated && truncated <= 99) {
- return 1900 + truncated; // step 3
- }
- return truncated; // step 4
- };
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