25 lines
764 B
JavaScript
25 lines
764 B
JavaScript
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'use strict';
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var $ = require('../internals/export');
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var fails = require('../internals/fails');
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var thisNumberValue = require('../internals/this-number-value');
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var nativeToPrecision = 1.0.toPrecision;
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var FORCED = fails(function () {
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// IE7-
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return nativeToPrecision.call(1, undefined) !== '1';
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}) || !fails(function () {
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// V8 ~ Android 4.3-
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nativeToPrecision.call({});
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});
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// `Number.prototype.toPrecision` method
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// https://tc39.github.io/ecma262/#sec-number.prototype.toprecision
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$({ target: 'Number', proto: true, forced: FORCED }, {
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toPrecision: function toPrecision(precision) {
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return precision === undefined
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? nativeToPrecision.call(thisNumberValue(this))
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: nativeToPrecision.call(thisNumberValue(this), precision);
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}
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});
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