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diff --git a/tools/node_modules/expresso/deps/jscoverage/js/jsiter.h b/tools/node_modules/expresso/deps/jscoverage/js/jsiter.h
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sw=4 et tw=78:
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1 *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef jsiter_h___
+#define jsiter_h___
+
+/*
+ * JavaScript iterators.
+ */
+#include "jsprvtd.h"
+#include "jspubtd.h"
+
+JS_BEGIN_EXTERN_C
+
+/*
+ * NB: these flag bits are encoded into the bytecode stream in the immediate
+ * operand of JSOP_ITER, so don't change them without advancing jsxdrapi.h's
+ * JSXDR_BYTECODE_VERSION.
+ */
+#define JSITER_ENUMERATE  0x1   /* for-in compatible hidden default iterator */
+#define JSITER_FOREACH    0x2   /* return [key, value] pair rather than key */
+#define JSITER_KEYVALUE   0x4   /* destructuring for-in wants [key, value] */
+
+/*
+ * Native iterator object slots, shared between jsiter.cpp and jstracer.cpp.
+ */
+#define JSSLOT_ITER_STATE       (JSSLOT_PRIVATE)
+#define JSSLOT_ITER_FLAGS       (JSSLOT_PRIVATE + 1)
+
+/*
+ * Convert the value stored in *vp to its iteration object. The flags should
+ * contain JSITER_ENUMERATE if js_ValueToIterator is called when enumerating
+ * for-in semantics are required, and when the caller can guarantee that the
+ * iterator will never be exposed to scripts.
+ */
+extern JS_FRIEND_API(JSBool)
+js_ValueToIterator(JSContext *cx, uintN flags, jsval *vp);
+
+extern JS_FRIEND_API(JSBool) JS_FASTCALL
+js_CloseIterator(JSContext *cx, jsval v);
+
+/*
+ * Given iterobj, call iterobj.next().  If the iterator stopped, set *rval to
+ * JSVAL_HOLE. Otherwise set it to the result of the next call.
+ */
+extern JS_FRIEND_API(JSBool)
+js_CallIteratorNext(JSContext *cx, JSObject *iterobj, jsval *rval);
+
+/*
+ * Close iterobj, whose class must be js_IteratorClass.
+ */
+extern void
+js_CloseNativeIterator(JSContext *cx, JSObject *iterobj);
+
+extern JSBool
+js_ThrowStopIteration(JSContext *cx);
+
+#if JS_HAS_GENERATORS
+
+/*
+ * Generator state codes.
+ */
+typedef enum JSGeneratorState {
+    JSGEN_NEWBORN,  /* not yet started */
+    JSGEN_OPEN,     /* started by a .next() or .send(undefined) call */
+    JSGEN_RUNNING,  /* currently executing via .next(), etc., call */
+    JSGEN_CLOSING,  /* close method is doing asynchronous return */
+    JSGEN_CLOSED    /* closed, cannot be started or closed again */
+} JSGeneratorState;
+
+struct JSGenerator {
+    JSObject            *obj;
+    JSGeneratorState    state;
+    JSStackFrame        frame;
+    JSFrameRegs         savedRegs;
+    JSArena             arena;
+    jsval               slots[1];
+};
+
+#define FRAME_TO_GENERATOR(fp) \
+    ((JSGenerator *) ((uint8 *)(fp) - offsetof(JSGenerator, frame)))
+
+extern JSObject *
+js_NewGenerator(JSContext *cx, JSStackFrame *fp);
+
+#endif
+
+extern JSClass          js_GeneratorClass;
+extern JSClass          js_IteratorClass;
+extern JSClass          js_StopIterationClass;
+
+static inline bool
+js_ValueIsStopIteration(jsval v)
+{
+    return !JSVAL_IS_PRIMITIVE(v) &&
+           STOBJ_GET_CLASS(JSVAL_TO_OBJECT(v)) == &js_StopIterationClass;
+}
+
+extern JSObject *
+js_InitIteratorClasses(JSContext *cx, JSObject *obj);
+
+JS_END_EXTERN_C
+
+#endif /* jsiter_h___ */