[Webkit-unassigned] [Bug 150114] New: Web Inspector: [Meta] Improve debugging of preprocessed JS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=150114

            Bug ID: 150114
           Summary: Web Inspector: [Meta] Improve debugging of
                    preprocessed JS
    Classification: Unclassified
           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: nvasilyev at apple.com
                CC: bburg at apple.com, graouts at webkit.org,
                    joepeck at webkit.org, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

Created attachment 263058
  --> https://bugs.webkit.org/attachment.cgi?id=263058&action=review
[Image] Web Inspector vs Chrome DevTools

I've tried to debug React.js examples from https://facebook.github.io/react/downloads.html. It was problematic for many of them:

I hosted the examples on GitHub pages: http://nv.github.io/webkit-inspector-bugs/react-0.14.0/examples/

http://nv.github.io/webkit-inspector-bugs/react-0.14.0/examples/basic-jsx-external/
http://nv.github.io/webkit-inspector-bugs/react-0.14.0/examples/jquery-bootstrap/

WebKit Inspector:
  – Can’t set breakpoints in example.js.
  – When Inspector was opened after the page load, example.js isn’t showed in the resources. When Inspector was opened during the page load, example.js appears twice in the list.

Chrome DevTools:
  — Works fine.


http://nv.github.io/webkit-inspector-bugs/react-0.14.0/examples/basic-jsx/
http://nv.github.io/webkit-inspector-bugs/react-0.14.0/examples/basic-jsx-harmony/
http://nv.github.io/webkit-inspector-bugs/react-0.14.0/examples/transitions/

WebKit Inspector:
  — Can’t set breakpoints on the text/babel inline scripts (which was converted to JS by Babel, e.g. "browser.min.js").

Chrome DevTools:
  — The preprocessed inline scripts available as “embedded” virtual resources.

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