init

node_modules/core-js/library/modules/es7.array.flat-map.js

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+'use strict';
+// https://tc39.github.io/proposal-flatMap/#sec-Array.prototype.flatMap
+var $export = require('./_export');
+var flattenIntoArray = require('./_flatten-into-array');
+var toObject = require('./_to-object');
+var toLength = require('./_to-length');
+var aFunction = require('./_a-function');
+var arraySpeciesCreate = require('./_array-species-create');
+
+$export($export.P, 'Array', {
+  flatMap: function flatMap(callbackfn /* , thisArg */) {
+    var O = toObject(this);
+    var sourceLen, A;
+    aFunction(callbackfn);
+    sourceLen = toLength(O.length);
+    A = arraySpeciesCreate(O, 0);
+    flattenIntoArray(A, O, O, sourceLen, 0, 1, callbackfn, arguments[1]);
+    return A;
+  }
+});
+
+require('./_add-to-unscopables')('flatMap');