3 var fs = require('fs')
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4 var PassThrough = require('stream').PassThrough
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5 var Transform = require('stream').Transform
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7 if (typeof Transform === 'undefined') {
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8 throw new Error('UglifyJS only supports browserify when using node >= 0.10.x')
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12 module.exports = transform
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13 function transform(file) {
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14 if (!/tools\/node\.js$/.test(file.replace(/\\/g,'/'))) return new PassThrough();
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15 if (cache[file]) return makeStream(cache[file])
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16 var uglify = require(file)
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17 var src = 'var sys = require("util");\nvar MOZ_SourceMap = require("source-map");\nvar UglifyJS = exports;\n' + uglify.FILES.map(function (path) { return fs.readFileSync(path, 'utf8') }).join('\n')
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19 var ast = uglify.parse(src)
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20 ast.figure_out_scope()
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22 var variables = ast.variables
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23 .map(function (node, name) {
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27 src += '\n\n' + variables.map(function (v) { return 'exports.' + v + ' = ' + v + ';' }).join('\n') + '\n\n'
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29 src += 'exports.AST_Node.warn_function = function (txt) { if (typeof console != "undefined" && typeof console.warn === "function") console.warn(txt) }\n\n'
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31 src += 'exports.minify = ' + uglify.minify.toString() + ';\n\n'
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32 src += 'exports.describe_ast = ' + uglify.describe_ast.toString() + ';'
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34 // TODO: remove once https://github.com/substack/node-browserify/issues/631 is resolved
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35 src = src.replace(/"for"/g, '"fo" + "r"')
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38 return makeStream(src);
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41 function makeStream(src) {
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42 var res = new Transform();
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43 res._transform = function (chunk, encoding, callback) { callback() }
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44 res._flush = function (callback) {
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