This issue was originally filed by Jana.M...@gmail.com
What steps will reproduce the problem?
You have to be on Mac. There is no problem with this on Windows.
Build your project in Dart editor with pub build - minified.
Right click (in Dart editor) on .html file in the build folder and select "Run in Browser"
This opens http://127.0.0.1:3030/ in Chrome but the script is not loaded so the Chrome keeps spinning and the application doesn't work.
What is the expected output? What do you see instead?
I see the error in console:
Failed to load resource: the server responded with a status of 404 (Not Found) for the .dart file
What version of the product are you using?
Dart SDK 1.10.0. (STABLE)
On what operating system?
OS X Yosemite
What browser (if applicable)?
Chrome 42.0.2311.135 (64-bit)
Please provide any additional information below.
I tried this on two projects and both with same results.
DartBot
commented
9 years ago 
Originally opened as https://github.com/dart-lang/sdk/issues/23431
This issue was originally filed by Jana.M...@gmail.com
What steps will reproduce the problem?
What is the expected output? What do you see instead? I see the error in console: Failed to load resource: the server responded with a status of 404 (Not Found) for the .dart file
What version of the product are you using? Dart SDK 1.10.0. (STABLE)
On what operating system? OS X Yosemite
What browser (if applicable)? Chrome 42.0.2311.135 (64-bit)
Please provide any additional information below. I tried this on two projects and both with same results.