flow like the river

VISUALIZACION/node_modules/safe-array-concat/index.js

@@ -0,0 +1,36 @@
+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+var $concat = GetIntrinsic('%Array.prototype.concat%');
+
+var callBind = require('call-bind');
+
+var callBound = require('call-bind/callBound');
+var $slice = callBound('Array.prototype.slice');
+
+var hasSymbols = require('has-symbols/shams')();
+var isConcatSpreadable = hasSymbols && Symbol.isConcatSpreadable;
+
+var empty = [];
+var $concatApply = isConcatSpreadable ? callBind.apply($concat, empty) : null;
+var $concatCall = isConcatSpreadable ? null : callBind($concat, empty);
+
+var isArray = isConcatSpreadable ? require('isarray') : null;
+
+module.exports = isConcatSpreadable
+	// eslint-disable-next-line no-unused-vars
+	? function safeArrayConcat(item) {
+		for (var i = 0; i < arguments.length; i += 1) {
+			var arg = arguments[i];
+			if (arg && typeof arg === 'object' && typeof arg[isConcatSpreadable] === 'boolean') {
+				if (!empty[isConcatSpreadable]) {
+					empty[isConcatSpreadable] = true;
+				}
+				var arr = isArray(arg) ? $slice(arg) : [arg];
+				arr[isConcatSpreadable] = true; // shadow the property. TODO: use [[Define]]
+				arguments[i] = arr;
+			}
+		}
+		return $concatApply(arguments);
+	}
+	: $concatCall;