flattenDepth.js
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			var baseFlatten = require('./_baseFlatten'),
			toInteger = require('./toInteger');

			/**
			* Recursively flatten `array` up to `depth` times.
			*
			* @static
			* @memberOf _
			* @since 4.4.0
			* @category Array
			* @param {Array} array The array to flatten.
			* @param {number} [depth=1] The maximum recursion depth.
			* @returns {Array} Returns the new flattened array.
			* @example
			*
			* var array = [1, [2, [3, [4]], 5]];
			*
			* _.flattenDepth(array, 1);
			* // => [1, 2, [3, [4]], 5]
			*
			* _.flattenDepth(array, 2);
			* // => [1, 2, 3, [4], 5]
			*/
			function flattenDepth(array, depth) {
			var length = array == null ? 0 : array.length;
			if (!length) {
			return [];
			}
			depth = depth === undefined ? 1 : toInteger(depth);
			return baseFlatten(array, depth);
			}

			module.exports = flattenDepth;

rOACCT/node_modules/lodash/flattenDepth.jsd5ad7e6ff2ccmaster