helper functions to print V8 Objects

.lldbinit

# lldb debugging v8-related functionality in Node.js
# =========================================================

# lldb re-write of user-defined V8 debugging functions
# https://github.com/v8/v8/blob/master/tools/gdbinit

#allow the file to be read when lldb starts (set to false to ignore it)
settings set target.load-cwd-lldbinit true

# Print HeapObjects.
command regex job 's/(.+)/call _v8_internal_Print_Object((void*)(%1))/'

# Print v8::Local handle value.
command regex jlh 's/(^\*.+)/call _v8_internal_Print_Object(*(v8::internal::Object**)(%1))/'


# Print Code objects containing given PC from an internal code address
command regex jco 's/(.+)/call _v8_internal_Print_Code((void*)(%1))/'

# Print TypeFeedbackVector
command regex jfv 's/(.+)/call _v8_internal_Print_TypeFeedbackVector((void*)(%1))/'

# Print DescriptorArray.
command regex jda 's/(.+)/call _v8_internal_Print_DescriptorArray((void*)(%1))/'