Sourcemap tells the client how to download the file. The client should not have a clue about your file system.
The mapping should be valid: # sourceMappingURL=/path/to/file.js.mapwhere it /path/to/file.js.mapwill be allowed:http://www.example.com/path/to/file.js.map
The client is fully agnostic for file systems.
In addition, you do not have to be protocol service resources file://.
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