Module debugger 

Script debugger — breakpoints, stepping, locals inspection, coverage tracking.

Architecture

DebugSession  ←→  ScriptDebugger  ←→  Vm
     ↕                  ↕
DebugCommand       BreakpointKind
                       ↕
                 CoverageTracker

Structs

Breakpoint

A single breakpoint with metadata.

CallStackTrace

Human-readable call stack trace.

CoverageTracker

Tracks which instruction indices were executed per chunk name.

DebugSession

A REPL-style debug session. Executes DebugCommands against a VM and a ScriptDebugger.

DebuggerState

Mutable debugger state — can be inspected between instructions.

FrameInfo

A frame entry in a call stack trace.

LocalInspector

Inspects local variables in a VM frame.

ScriptDebugger

Wraps VM execution with pre-instruction hooks.

WatchExpression

Evaluates a one-liner expression in a fresh VM loaded with provided globals.

Enums

BreakpointKind

Specifies when a breakpoint fires.

DebugCommand

Commands accepted by the debug session REPL.

StepMode

Controls single-step behaviour.