Do source maps include the source text?

Question

When I generate a source map from minified js back to source files, does the map include the text of the source files, or do I need to host them separately?

The HTML5 Rocks description mentions the sources key that lists the names of source files, and explains how mappings maps minified line and column numbers to original line and column numbers, but suggests "You'll also need to upload your original files so the dev tools can reference and display them when necessary".

Browserify's debug option generates inline source maps that show original files in dev tools without hosting the source files separately.

Does the current source map spec support both?

hurrymaplelad · Accepted Answer · 2013-11-06 03:14:15Z

15

Source maps can optionally include the original source.

From the spec, sourcesContent is "An optional list of source content, useful when the “source” can’t be hosted.

source-map (the node module powering browserify source maps) supports sourcesContent. Coffeeify populates sourcesContent by default, inlining source text.

answered Nov 6, 2013 at 3:14

hurrymaplelad

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1 Comment

hurrymaplelad Over a year ago

From comments in the spec, sounds like sourcesContent was added in February 2013 to match support that already existed in Chrome for self contained source maps.

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