[Webkit-unassigned] [Bug 244349] New: Web Inspector: Uncaught Exception: TypeError: undefined is not an object (evaluating 'this._breakpointMap[lineInfo.lineNumber][lineInfo.columnNumber]')

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=244349

            Bug ID: 244349
           Summary: Web Inspector: Uncaught Exception: TypeError:
                    undefined is not an object (evaluating
                    'this._breakpointMap[lineInfo.lineNumber][lineInfo.col
                    umnNumber]')
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
               URL: https://webkit.org/
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: drousso at apple.com
                CC: inspector-bugzilla-changes at group.apple.com

Uncaught Exception in Web Inspector.

Steps to Reproduce:
1. create an Assertion Failures breakpoint
2. evaluate `console.assert()`
3. resume execution
4. delete the Assertion Failures breakpoint

Uncaught Exceptions:
-----------------------
 - TypeError: undefined is not an object (evaluating 'this._breakpointMap[lineInfo.lineNumber][lineInfo.columnNumber]') (at SourceCodeTextEditor.js:468:79)
    _removeBreakpointWithEditorLineInfo @ SourceCodeTextEditor.js:468:79
    _breakpointRemoved @ SourceCodeTextEditor.js:710:49
    dispatch @ Object.js:134:35
    dispatchEventToListeners @ Object.js:142:17
    removeBreakpoint @ DebuggerManager.js:798:38
    remove @ JavaScriptBreakpoint.js:214:44
    ondelete @ BreakpointTreeElement.js:72:36
    _treeKeyDown @ TreeOutline.js:608:69
    _treeKeyDown @ [native code]
-----------------------

Notes:
Inspected URL:        https://webkit.org/
Loading completed:    true
Frontend User Agent:  Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko)

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