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22 lines
535 B
JavaScript
22 lines
535 B
JavaScript
import baseFlatten from './.internal/baseFlatten.js'
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/**
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* Flattens `array` a single level deep.
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*
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* @since 0.1.0
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* @category Array
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* @param {Array} array The array to flatten.
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* @returns {Array} Returns the new flattened array.
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* @see flatMap, flatMapDeep, flatMapDepth, flattenDeep, flattenDepth
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* @example
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*
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* flatten([1, [2, [3, [4]], 5]])
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* // => [1, 2, [3, [4]], 5]
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*/
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function flatten(array) {
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const length = array == null ? 0 : array.length
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return length ? baseFlatten(array, 1) : []
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}
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export default flatten
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