requisite/lib/minify.js

A cosmic javascript bundler.

// Generated by CoffeeScript 1.12.4
var auto, detectMinifier, minifiers, wrapper;

detectMinifier = function(minifier) {
  var err;
  if (/^uglify/.test(minifier)) {
    return 'uglify';
  }
  if (minifier == null) {
    try {
      if (require.resolve('uglify-js')) {
        return 'uglify';
      }
    } catch (error) {
      err = error;
    }
    try {
      if (require.resolve('esmangle')) {
        return 'esmangle';
      }
    } catch (error) {
      err = error;
      throw new Error('Unable to determine minifier to use');
    }
  }
  return minifier;
};

minifiers = {
  esmangle: function(ast, opts) {
    var esmangle;
    if (opts == null) {
      opts = {};
    }
    esmangle = require('esmangle');
    ast = esmangle.optimize(ast, null);
    if (opts.mangle) {
      ast = esmangle.mangle(ast);
    }
    return ast;
  },
  uglify: function(ast, opts) {
    var uast, uglify;
    if (opts == null) {
      opts = {};
    }
    uglify = require('uglify-js');
    uast = uglify.AST_Node.from_mozilla_ast(ast);
    uast.figure_out_scope();
    uast = uast.transform(uglify.Compressor({
      warnings: false
    }));
    if (opts.mangle) {
      uast.figure_out_scope();
      uast.compute_char_frequency();
      uast.mangle_names();
    }
    return uast.to_mozilla_ast();
  }
};

auto = function(ast, opts) {
  var minifier;
  minifier = detectMinifier(opts.minifier);
  return minifiers[minifier](ast, opts);
};

wrapper = auto;

wrapper.auto = auto;

wrapper.minifiers = minifiers;

module.exports = wrapper;

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