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node_modules/core-js/internals/call-with-safe-iteration-closing.js

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+'use strict';
+var anObject = require('../internals/an-object');
+var iteratorClose = require('../internals/iterator-close');
+
+// call something on iterator step with safe closing on error
+module.exports = function (iterator, fn, value, ENTRIES) {
+  try {
+    return ENTRIES ? fn(anObject(value)[0], value[1]) : fn(value);
+  } catch (error) {
+    iteratorClose(iterator, 'throw', error);
+  }
+};