1 files changed, 95 insertions, 0 deletions
diff --git a/node_modules/koa-webpack/index.js b/node_modules/koa-webpack/index.js
new file mode 100755
index 00000000..1acb6f01
--- /dev/null
+++ b/node_modules/koa-webpack/index.js
@@ -0,0 +1,95 @@
+'use strict';
+
+const path = require('path');
+const Webpack = require('webpack');
+const devMiddleware = require('webpack-dev-middleware');
+const hotClient = require('webpack-hot-client');
+const root = require('app-root-path');
+
+/**
+ * @method koaDevware
+ * @desc   Middleware for Koa to proxy webpack-dev-middleware
+ **/
+function koaDevware(dev, compiler) {
+  /**
+   * @method waitMiddleware
+   * @desc   Provides blocking for the Webpack processes to complete.
+   **/
+  function waitMiddleware() {
+    return new Promise((resolve, reject) => {
+      dev.waitUntilValid(() => {
+        resolve(true);
+      });
+
+      function tapFailedHook(comp) {
+        comp.hooks.failed.tap('KoaWebpack', (error) => {
+          reject(error);
+        });
+      }
+
+      if (compiler.compilers) {
+        for (const child of compiler.compilers) {
+          tapFailedHook(child);
+        }
+      } else {
+        tapFailedHook(compiler);
+      }
+    });
+  }
+
+  return (context, next) => Promise.all([
+    waitMiddleware(),
+    new Promise((resolve) => {
+      dev(context.req, {
+        end: (content) => {
+          context.body = content; // eslint-disable-line no-param-reassign
+          resolve();
+        },
+        setHeader: context.set.bind(context),
+        locals: context.state
+      }, () => resolve(next()));
+    })
+  ]);
+}
+
+/**
+ * The entry point for the Koa middleware.
+ **/
+module.exports = function fn(opts) {
+  const defaults = { dev: {}, hot: {} };
+
+  const options = Object.assign(defaults, opts);
+
+  let { compiler, config } = options;
+
+  if (!compiler) {
+    if (!config) {
+      // eslint-disable-next-line import/no-dynamic-require, global-require
+      config = require(path.join(root.path, 'webpack.config.js'));
+    }
+
+    compiler = Webpack(config);
+  }
+
+  if (!options.dev.publicPath) {
+    const { publicPath } = compiler.options.output;
+
+    if (!publicPath) {
+      throw new Error('koa-webpack: publicPath must be set on `dev` options, or in a compiler\'s `output` configuration.');
+    }
+
+    options.dev.publicPath = publicPath;
+  }
+
+  const client = options.hot ? hotClient(compiler, options.hot) : null;
+  const dev = devMiddleware(compiler, options.dev);
+
+  return Object.assign(koaDevware(dev, compiler), {
+    dev,
+    client,
+    close(callback) {
+      const next = client ? () => { client.close(callback); } : callback;
+      dev.close(next);
+    }
+  });
+};