Two workers & worker termination (#198)

* Refactoring codecs

* Plugging in new processor

* Fixing decorator

* MozJPEG free issue

* Better worker aborting, and terminate workers that aren't used for 10 seconds

* Better comment

* Ooops, half-typed comment

* Uncommenting problematic line

* Surma fixed it!

* Abstracting WASM initialisation

* Better comment

* Don't need this.

* Adding ticket

* noInitalRun

* Reverting MozJPEG issue demo

* Making a const for worker timeout

* Inline docs

* Bail early rather than nesting

* Addressing nits

webpack.config.js

@@ -12,6 +12,7 @@ const ReplacePlugin = require('webpack-plugin-replace');
 const CopyPlugin = require('copy-webpack-plugin');
 const WatchTimestampsPlugin = require('./config/watch-timestamps-plugin');
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
+const WorkerPlugin = require('worker-plugin');
 
 function readJson (filename) {
   return JSON.parse(fs.readFileSync(filename));
@@ -130,10 +131,6 @@ module.exports = function (_, env) {
             }
           ]
         },
-        {
-          test: /\.worker.[tj]sx?$/,
-          loader: 'comlink-loader'
-        },
         {
           test: /\.tsx?$/,
           exclude: nodeModules,
@@ -183,6 +180,8 @@ module.exports = function (_, env) {
         beforeEmit: true
       }),
 
+      new WorkerPlugin(),
+
       // Automatically split code into async chunks.
       // See: https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
       isProd && new webpack.optimize.SplitChunksPlugin({}),