Skip to content

Debugger's list command throws TypeError: Cannot read properties of null (reading 'list') #42775

Description

@cola119

Version

v17.9.0

Platform

No response

Subsystem

No response

What steps will reproduce the bug?

$ node inspect -e "const a = 1"
debug> c
debug> list()

How often does it reproduce? Is there a required condition?

No response

What is the expected behavior?

Debugger should throw ERR_DEBUGGER_ERROR just like sb() command since the runtime context has been already destroyed.

debug> list()
> 1 const a = 1
debug> c
< Waiting for the debugger to disconnect...
< 
debug> list()
node:internal/debugger/inspect_repl:362
      throw new ERR_DEBUGGER_ERROR('Requires execution to be paused');
      ^
debug> sb(1)
node:internal/debugger/inspect_repl:362
      throw new ERR_DEBUGGER_ERROR('Requires execution to be paused');
      ^

What do you see instead?

debug> list()
> 1 const a = 1
debug> c
< Waiting for the debugger to disconnect...
< 
debug> list()
node:internal/debugger/inspect_repl:638
    return selectedFrame.list(delta).then(null, (error) => {
                         ^

Uncaught TypeError: Cannot read properties of null (reading 'list')
    at list (node:internal/debugger/inspect_repl:638:26)
    at REPL3:1:1
    at Script.runInContext (node:vm:139:12)
    at Object.runInContext (node:vm:289:6)
    at REPLServer.controlEval (node:internal/debugger/inspect_repl:578:25)
    at bound (node:domain:421:15)
    at REPLServer.runBound [as eval] (node:domain:432:12)
    at REPLServer.onLine (node:repl:893:10)
    at REPLServer.emit (node:events:527:28)
    at REPLServer.emit (node:domain:475:12)
debug> sb(1)
node:internal/debugger/inspect_repl:362
      throw new ERR_DEBUGGER_ERROR('Requires execution to be paused');
      ^

Additional information

No response

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    debuggerIssues and PRs related to the Node.js command-line debugger.

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions