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26 lines
815 B
26 lines
815 B
2 weeks ago
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'use strict';
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var $ = require('../internals/export');
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var uncurryThis = require('../internals/function-uncurry-this');
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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 = uncurryThis(1.0.toPrecision);
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var FORCED = fails(function () {
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// IE7-
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return nativeToPrecision(1, undefined) !== '1';
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}) || !fails(function () {
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// V8 ~ Android 4.3-
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nativeToPrecision({});
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});
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// `Number.prototype.toPrecision` method
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// https://tc39.es/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(thisNumberValue(this))
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: nativeToPrecision(thisNumberValue(this), precision);
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}
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});
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