1 | 'use strict';
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2 | var $ = require('../internals/export');
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3 | var isObject = require('../internals/is-object');
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4 | var onFreeze = require('../internals/internal-metadata').onFreeze;
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5 | var FREEZING = require('../internals/freezing');
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6 | var fails = require('../internals/fails');
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7 |
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8 |
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9 | var $preventExtensions = Object.preventExtensions;
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10 | var FAILS_ON_PRIMITIVES = fails(function () { $preventExtensions(1); });
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11 |
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12 |
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13 |
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14 | $({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !FREEZING }, {
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15 | preventExtensions: function preventExtensions(it) {
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16 | return $preventExtensions && isObject(it) ? $preventExtensions(onFreeze(it)) : it;
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17 | }
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18 | });
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