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10 lines
338 B
10 lines
338 B
'use strict';
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// TODO: semver-major: remove
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var canDistinguishSparseFromUndefined = 0 in [undefined]; // IE 6 - 8 have a bug where this returns false
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module.exports = function isStringOrHole(item, index, arr) {
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return typeof item === 'string' || (canDistinguishSparseFromUndefined ? !(index in arr) : typeof item === 'undefined');
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};
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