Sourcemapping URL

[divmain]

Transform generateRawBundles such that any bundles (that are generated with a source map) have the path to the source-map appended as a comment at the end of the generated source.

It will look something like this:

// ... generated source code
//# sourceMappingURL=/path/to/file.js.map

It may be worth splitting the code generation piece out into a separate pluggable, so that it is easier to override when a map is returned. If that is the direction that is taken, that new pluggable should be transformed instead of generateRawBundles.

The plugin itself should probably take a config format, so that the path can be customized. This could use string-pattern replacement, regex, or whatever provides the cleanest API.

[divmain]

Since this is such a simple plugin, it may be better to provide this as an example in a "cookbook" section of documentation.

[divmain]

It is probably worth adding this as default functionality, and exposing the sourceMappingURL path generation as a pluggable. As it is, source-maps are generated but they're not consumed by the browser because sourceMappingURL is missing from the end of the file. Exposing it as a pluggable will make it easy for users to setup custom mappings to accommodate their use-case.