[Webkit-unassigned] [Bug 258136] New: Web Inspector: REGRESSION(264158 at main) Sources tab never shows files when inspecting JS Context

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258136

            Bug ID: 258136
           Summary: Web Inspector: REGRESSION(264158 at main) Sources tab
                    never shows files when inspecting JS Context
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rcaliman at apple.com
                CC: inspector-bugzilla-changes at group.apple.com

Created attachment 466702

  --> https://bugs.webkit.org/attachment.cgi?id=466702&action=review

Screenshot of uncaught exception

Regressed by https://commits.webkit.org/264158@main in https://github.com/WebKit/WebKit/pull/13617

Unable to inspect JS Contexts because of uncaught exception:

```
TypeError:​ null is not an object (evaluating 'script.displayName')​ (at ScriptTreeElement.js:​32:​39)​
    ScriptTreeElement @ ScriptTreeElement.js:​32:​39
    WorkerTreeElement @ WorkerTreeElement.js:​41:​14
    _addWorkerTargetWithMainResource @ SourcesNavigationSidebarPanel.js:​1317:​57
    _handleResourceGroupingModeChanged @ SourcesNavigationSidebarPanel.js:​2387:​54
    SourcesNavigationSidebarPanel @ SourcesNavigationSidebarPanel.js:​413:​48
    navigationSidebarPanel @ TabContentView.js:​189:​87
    attached @ ContentBrowserTabContentView.js:​98:​17
    _didMoveToParent @ View.js:​272:​30
    insertSubviewBefore @ View.js:​117:​30
    addSubview @ View.js:​89:​33
    _showEntry @ ContentViewContainer.js:​468:​28
    showBackForwardEntryForIndex @ ContentViewContainer.js:​171:​24
    showContentView @ ContentViewContainer.js:​148:​42
    _tabBarItemSelected @ TabBrowser.js:​246:​55
    dispatch @ Object.js:​134:​35
    dispatchEventToListeners @ Object.js:​142:​17
    selectTabBarItem @ TabBar.js:​402:​38
    _handleTabContainerMouseDown @ TabBar.js:​698:​30
```

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