Initial commit

.gitignore

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+/node_modules

LICENSE

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+MIT License
+
+Copyright (c) 2016 Ilia Saulenko <[email protected]>
+
+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.

README.md

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+# brotli plugin for webpack
+
+This plugin compresses assets with [Brotli](https://github.com/google/brotli) compression algorithm using [iltorb](https://github.com/MayhemYDG/iltorb#brotliparams) library for serving it with [ngx_brotli](https://github.com/google/ngx_brotli) or such. 
+
+## Usage
+
+``` javascript
+var BrotliPlugin = require('brotli-webpack-plugin');
+module.exports = {
+	plugins: [
+		new CompressionPlugin({
+			asset: '[path].br[query]',
+			test: /\.(js|css|html|svg)$/,
+			threshold: 10240,
+			minRatio: 0.8
+		})
+	]
+}
+```
+
+Arguments:
+
+* `asset`: The target asset name. `[file]` is replaced with the original asset file name. `[path]` is replaced with the path of the original asset and `[query]` with the query. Defaults to `'[path].br[query]'`.
+* `test`: All assets matching this RegExp are processed. Defaults to every asset.
+* `threshold`: Only assets bigger than this size (in bytes) are processed. Defaults to `0`.
+* `minRatio`: Only assets that compress better that this ratio are processed. Defaults to `0.8`.
+
+Optional arguments for Brotli (see [iltorb](https://github.com/MayhemYDG/iltorb#brotliparams) doc for details):
+* `mode`: Default: 0,
+* `quality`: Default: 11,
+* `lgwin`: Default: 22,
+* `lgblock`: Default: 0,
+* `enable_dictionary`: Default: true,
+* `enable_transforms`: Default: false,
+* `greedy_block_split`: Default: false,
+* `enable_context_modeling`: Default: false
+
+## License
+
+Heavily copy-pasted from [webpack/compression-webpack-plugin](https://github.com/webpack/compression-webpack-plugin) by [Tobias Koppers](https://github.com/sokra).
+
+Licensed under [MIT](./LICENSE).

index.js

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+var async = require('async');
+var url = require('url');
+
+var RawSource = require('webpack-sources/lib/RawSource');
+
+function CompressionPlugin(options) {
+    options = options || {};
+    this.asset = options.asset || '[path].gz[query]';
+    this.test = options.test || options.regExp;
+    this.threshold = options.threshold || 0;
+    this.minRatio = options.minRatio || 0.8;
+
+    try {
+        var brotli = require('iltorb');
+    } catch (err) {
+        throw new Error('iltorb not found');
+    }
+
+    var brotliOptions = {
+        mode: options.hasOwnProperty('mode') ? options.mode : 0,
+        quality: options.hasOwnProperty('quality') ? options.quality : 11,
+        lgwin: options.hasOwnProperty('lgwin') ? options.lgwin : 22,
+        lgblock: options.hasOwnProperty('lgblock') ? options.lgblock : 0,
+        enable_dictionary: options.hasOwnProperty('enable_dictionary') ? options.enable_dictionary : true,
+        enable_transforms: options.hasOwnProperty('enable_transforms') ? options.enable_transforms : false,
+        greedy_block_split: options.hasOwnProperty('greedy_block_split') ? options.greedy_block_split : false,
+        enable_context_modeling: options.hasOwnProperty('enable_context_modeling') ? options.enable_context_modeling : false
+    };
+
+    this.compress = function (content, callback) {
+        brotli.compress(content, brotliOptions, callback);
+    };
+}
+module.exports = CompressionPlugin;
+
+CompressionPlugin.prototype.apply = function (compiler) {
+    compiler.plugin('this-compilation', function (compilation) {
+        compilation.plugin('optimize-assets', function (assets, callback) {
+            async.forEach(Object.keys(assets), function (file, callback) {
+                if (this.test && !this.test.test(file)) {
+                    return callback();
+                }
+
+                var asset = assets[file];
+                var content = asset.source();
+                if (!Buffer.isBuffer(content)) {
+                    content = new Buffer(content, 'utf-8');
+                }
+
+                var originalSize = content.length;
+                if (originalSize < this.threshold) {
+                    return callback();
+                }
+
+                this.compress(content, function (err, result) {
+                    if (err) {
+                        return callback(err);
+                    }
+
+                    if (result.length / originalSize > this.minRatio) {
+                        return callback();
+                    }
+
+                    var parse = url.parse(file);
+                    var sub = {
+                        file: file,
+                        path: parse.pathname,
+                        query: parse.query || ''
+                    };
+
+                    var newFile = this.asset.replace(/\[(file|path|query)\]/g, function (p0, p1) {
+                        return sub[p1];
+                    });
+
+                    assets[newFile] = new RawSource(result);
+                    callback();
+                }.bind(this));
+            }.bind(this), callback);
+        }.bind(this));
+    }.bind(this));
+};

package.json

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+{
+  "name": "brotli-webpack-plugin",
+  "version": "0.1.0",
+  "author": {
+    "name": "Ilia Saulenko",
+    "email": "[email protected]",
+    "url": "https://github.com/mynameiswhm"
+  },
+  "description": "Prepare Brotli-compressed versions of assets to serve them with Content-Encoding: br",
+  "dependencies": {
+    "async": "0.2.x",
+    "iltorb": "^1.0.12",
+    "webpack-sources": "^0.1.0"
+  },
+  "homepage": "https://github.com/ngsru/brotli-webpack-plugin",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ngsru/brotli-webpack-plugin.git"
+  },
+  "license": "MIT"
+}