browserify-through

Handy dandy helper to assist you with writing Browserify transforms.

Installation

npm install browserify-through

Usage Example

Via package.json

{
  "name": "fixtures",
  "version": "1.0.0",
  "browserify": {
    "transform": [
      ["./transform", {"token": "__token__"}]
    ]
  }
}

var through = require('browserify-through');

module.exports = through({
  map: function (filepath, opts, data, done) {
    done(null, data.replace(opts.token, '__new_token__'));
  },

  filter: function (filepath, opts) {
    return /\.js$/.test(filepath);
  }
});

Via Browserify API

var browserify = require('browserify');
var through = require('browserify-through');
var bundler = browserify('./src/index.js');

bundler.transform(through({
  map: function (filepath, opts, data, done) {
    done(null, data.replace(/foo/, 'bar'));
  },

  // optional filter
  filter: function (filepath, opts) {
    return /\.js$/.test(filepath);
  }
}));

API

through({opts})

• opts.map - function(filepath, opts, data, [callback]) - Function should either return final data or call callback(err, data). opts are passed via package.json.
• opts.filter - function(filepath, opts) - If filter function returns true for a givel filepath, the content will be passed to the map function. It's much more efficient to do this step separately from the map function because if you want to just ignore the file, it will be passed through without being stored in memory to be passed into map. opts are passed via package.json.

Testing

npm test

License

The MIT License (MIT)

Copyright 2014 Alex Gorbatchev

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.