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