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8 lines
188 B
JavaScript
8 lines
188 B
JavaScript
'use strict';
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module.exports = function () {
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var arr = [1, 2, 3, 4, 5];
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if (typeof arr.copyWithin !== 'function') return false;
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return String(arr.copyWithin(1, 3)) === '1,4,5,4,5';
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};
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