26 lines
800 B
JavaScript
Executable file
26 lines
800 B
JavaScript
Executable file
'use strict';
|
|
var $ = require('../internals/export');
|
|
var uncurryThis = require('../internals/function-uncurry-this');
|
|
var fails = require('../internals/fails');
|
|
var thisNumberValue = require('../internals/this-number-value');
|
|
|
|
var un$ToPrecision = uncurryThis(1.0.toPrecision);
|
|
|
|
var FORCED = fails(function () {
|
|
// IE7-
|
|
return un$ToPrecision(1, undefined) !== '1';
|
|
}) || !fails(function () {
|
|
// V8 ~ Android 4.3-
|
|
un$ToPrecision({});
|
|
});
|
|
|
|
// `Number.prototype.toPrecision` method
|
|
// https://tc39.es/ecma262/#sec-number.prototype.toprecision
|
|
$({ target: 'Number', proto: true, forced: FORCED }, {
|
|
toPrecision: function toPrecision(precision) {
|
|
return precision === undefined
|
|
? un$ToPrecision(thisNumberValue(this))
|
|
: un$ToPrecision(thisNumberValue(this), precision);
|
|
}
|
|
});
|