((o) Duktape debugger
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    // No source loaded

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(output from script, print() and alert() calls)
(callstack)
(locals)
(breakpoints)
watch (eval on pause)

Duktape debugger is a web UI for debugging ECMAScript on a target device.

This web UI talks to a NodeJS debug server using socket.io. The debug server talks to the target device using the Duktape debug protocol (see debugger.rst).