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21 lines
745 B
21 lines
745 B
'use strict'; |
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// https://tc39.github.io/proposal-flatMap/#sec-Array.prototype.flatten |
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var $export = require('./_export'); |
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var flattenIntoArray = require('./_flatten-into-array'); |
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var toObject = require('./_to-object'); |
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var toLength = require('./_to-length'); |
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var toInteger = require('./_to-integer'); |
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var arraySpeciesCreate = require('./_array-species-create'); |
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$export($export.P, 'Array', { |
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flatten: function flatten(/* depthArg = 1 */) { |
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var depthArg = arguments[0]; |
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var O = toObject(this); |
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var sourceLen = toLength(O.length); |
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var A = arraySpeciesCreate(O, 0); |
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flattenIntoArray(A, O, O, sourceLen, 0, depthArg === undefined ? 1 : toInteger(depthArg)); |
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return A; |
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} |
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}); |
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require('./_add-to-unscopables')('flatten');
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