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// simple script to optionally elide source-map-support (or other optional modules) when running browserify.

var stream = require("stream"),

Transform = stream.Transform,

resolve = require("browser-resolve");

var requirePattern = /require\s*\(\s*['"](source-map-support)['"]\s*\)/;

module.exports = function (file) {

return new Transform({

transform: function (data, encoding, cb) {

var text = encoding === "buffer" ? data.toString("utf8") : data;

this.push(new Buffer(text.replace(requirePattern, function (originalText, moduleName) {

try {

resolve.sync(moduleName, { filename: file });

return originalText;

}

catch (e) {

return "(function () { throw new Error(\"module '" + moduleName + "' not found.\"); })()";

}

}), "utf8"));

cb();

}

});

};