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source-mapping-url

Extracts the sourceMappingUrl from a node.js read stream.

Pass it any utf8 stream, and it gives you the source-map url in that stream. If no source-map is found, it returns false.

Works for both the @ and # formats. Only tested against JS files, but no reason it can't work for CSS files too.

Example

var smu = require("source-mapping-url"),
	zlib = require("zlib"),
    http = require("http");

var stream = http.get("http://code.jquery.com/jquery.min.js")
                 .pipe(zlib.createGunzip());

smu(stream, function(err, sourceMapUrl) {
	// sourceMapUrl is either false (if there's no source map declaration)
	// or is the value extracted from the file.
	// eg. `jquery.min.map`
});

Installation

npm install source-mapping-url

To run tests, cd to the source-mapping-url directory, and type in npm test.

License

MIT

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Extracts the sourceMappingUrl from a node.js read stream

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