6 files changed, 482 insertions, 0 deletions
diff --git a/node_modules/webpack-dev-middleware/lib/DevMiddlewareError.js b/node_modules/webpack-dev-middleware/lib/DevMiddlewareError.js
new file mode 100644
index 00000000..0ae2ce81
--- /dev/null
+++ b/node_modules/webpack-dev-middleware/lib/DevMiddlewareError.js
@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = class DevMiddlewareError extends Error {
+
+};
diff --git a/node_modules/webpack-dev-middleware/lib/context.js b/node_modules/webpack-dev-middleware/lib/context.js
new file mode 100644
index 00000000..5e9abba7
--- /dev/null
+++ b/node_modules/webpack-dev-middleware/lib/context.js
@@ -0,0 +1,103 @@
+'use strict';
+
+const weblog = require('webpack-log');
+
+module.exports = function ctx(compiler, options) {
+  const context = {
+    state: false,
+    webpackStats: null,
+    callbacks: [],
+    options,
+    compiler,
+    watching: null,
+    forceRebuild: false
+  };
+
+  if (options.logger) {
+    context.log = options.logger;
+  } else {
+    context.log = weblog({
+      level: options.logLevel || 'info',
+      name: 'wdm',
+      timestamp: options.logTime
+    });
+  }
+
+  const { log } = context;
+
+  function done(stats) {
+    // We are now on valid state
+    context.state = true;
+    context.webpackStats = stats;
+
+    // Do the stuff in nextTick, because bundle may be invalidated
+    // if a change happened while compiling
+    process.nextTick(() => {
+      // check if still in valid state
+      if (!context.state) {
+        return;
+      }
+
+      // print webpack output
+      context.options.reporter(context.options, {
+        log,
+        state: true,
+        stats
+      });
+
+      // execute callback that are delayed
+      const cbs = context.callbacks;
+      context.callbacks = [];
+      cbs.forEach((cb) => {
+        cb(stats);
+      });
+    });
+
+    // In lazy mode, we may issue another rebuild
+    if (context.forceRebuild) {
+      context.forceRebuild = false;
+      rebuild();
+    }
+  }
+
+  function invalid(callback) {
+    if (context.state) {
+      context.options.reporter(context.options, {
+        log,
+        state: false
+      });
+    }
+
+    // We are now in invalid state
+    context.state = false;
+    if (typeof callback === 'function') {
+      callback();
+    }
+  }
+
+  function rebuild() {
+    if (context.state) {
+      context.state = false;
+      context.compiler.run((err) => {
+        if (err) {
+          log.error(err.stack || err);
+          if (err.details) {
+            log.error(err.details);
+          }
+        }
+      });
+    } else {
+      context.forceRebuild = true;
+    }
+  }
+
+  context.rebuild = rebuild;
+  context.compiler.hooks.invalid.tap('WebpackDevMiddleware', invalid);
+  context.compiler.hooks.run.tap('WebpackDevMiddleware', invalid);
+  context.compiler.hooks.done.tap('WebpackDevMiddleware', done);
+  context.compiler.hooks.watchRun.tap('WebpackDevMiddleware', (comp, callback) => {
+    invalid(callback);
+  });
+
+  return context;
+};
diff --git a/node_modules/webpack-dev-middleware/lib/fs.js b/node_modules/webpack-dev-middleware/lib/fs.js
new file mode 100644
index 00000000..1823b67a
--- /dev/null
+++ b/node_modules/webpack-dev-middleware/lib/fs.js
@@ -0,0 +1,73 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const MemoryFileSystem = require('memory-fs');
+const { colors } = require('webpack-log');
+const NodeOutputFileSystem = require('webpack/lib/node/NodeOutputFileSystem');
+const DevMiddlewareError = require('./DevMiddlewareError');
+
+const { mkdirp } = new NodeOutputFileSystem();
+
+module.exports = {
+  toDisk(context) {
+    const compilers = context.compiler.compilers || [context.compiler];
+    for (const compiler of compilers) {
+      compiler.hooks.afterEmit.tap('WebpackDevMiddleware', (compilation) => {
+        const { assets } = compilation;
+        const { log } = context;
+        const { writeToDisk: filter } = context.options;
+        let { outputPath } = compiler;
+
+        if (outputPath === '/') {
+          outputPath = compiler.context;
+        }
+
+        for (const assetPath of Object.keys(assets)) {
+          const asset = assets[assetPath];
+          const source = asset.source();
+          const isAbsolute = path.isAbsolute(assetPath);
+          const writePath = isAbsolute ? assetPath : path.join(outputPath, assetPath);
+          const relativePath = path.relative(process.cwd(), writePath);
+          const allowWrite = filter && typeof filter === 'function' ? filter(writePath) : true;
+
+          if (allowWrite) {
+            let output = source;
+
+            mkdirp.sync(path.dirname(writePath));
+
+            if (Array.isArray(source)) {
+              output = source.join('\n');
+            }
+
+            try {
+              fs.writeFileSync(writePath, output, 'utf-8');
+              log.debug(colors.cyan(`Asset written to disk: ${relativePath}`));
+            } catch (e) {
+              log.error(`Unable to write asset to disk:\n${e}`);
+            }
+          }
+        }
+      });
+    }
+  },
+
+  setFs(context, compiler) {
+    if (typeof compiler.outputPath === 'string' && !path.posix.isAbsolute(compiler.outputPath) && !path.win32.isAbsolute(compiler.outputPath)) {
+      throw new DevMiddlewareError('`output.path` needs to be an absolute path or `/`.');
+    }
+
+    let fileSystem;
+    // store our files in memory
+    const isMemoryFs = !compiler.compilers && compiler.outputFileSystem instanceof MemoryFileSystem;
+
+    if (isMemoryFs) {
+      fileSystem = compiler.outputFileSystem;
+    } else {
+      fileSystem = new MemoryFileSystem();
+      compiler.outputFileSystem = fileSystem;
+    }
+
+    context.fs = fileSystem;
+  }
+};
diff --git a/node_modules/webpack-dev-middleware/lib/middleware.js b/node_modules/webpack-dev-middleware/lib/middleware.js
new file mode 100644
index 00000000..602632b6
--- /dev/null
+++ b/node_modules/webpack-dev-middleware/lib/middleware.js
@@ -0,0 +1,98 @@
+'use strict';
+
+const path = require('path');
+const mime = require('mime');
+const DevMiddlewareError = require('./DevMiddlewareError');
+const { getFilenameFromUrl, handleRangeHeaders, handleRequest, ready } = require('./util');
+
+module.exports = function wrapper(context) {
+  return function middleware(req, res, next) {
+    // fixes #282. credit @cexoso. in certain edge situations res.locals is
+    // undefined.
+    res.locals = res.locals || {};
+
+    function goNext() {
+      if (!context.options.serverSideRender) {
+        return next();
+      }
+
+      return new Promise(((resolve) => {
+        ready(context, () => {
+          res.locals.webpackStats = context.webpackStats;
+          res.locals.fs = context.fs;
+          resolve(next());
+        }, req);
+      }));
+    }
+
+    const acceptedMethods = context.options.methods || ['GET'];
+    if (acceptedMethods.indexOf(req.method) === -1) {
+      return goNext();
+    }
+
+    let filename = getFilenameFromUrl(context.options.publicPath, context.compiler, req.url);
+
+    if (filename === false) {
+      return goNext();
+    }
+
+    return new Promise(((resolve) => {
+      handleRequest(context, filename, processRequest, req);
+      function processRequest() {
+        try {
+          let stat = context.fs.statSync(filename);
+
+          if (!stat.isFile()) {
+            if (stat.isDirectory()) {
+              let { index } = context.options;
+
+              if (index === undefined || index === true) {
+                index = 'index.html';
+              } else if (!index) {
+                throw new DevMiddlewareError('next');
+              }
+
+              filename = path.posix.join(filename, index);
+              stat = context.fs.statSync(filename);
+              if (!stat.isFile()) {
+                throw new DevMiddlewareError('next');
+              }
+            } else {
+              throw new DevMiddlewareError('next');
+            }
+          }
+        } catch (e) {
+          return resolve(goNext());
+        }
+
+        // server content
+        let content = context.fs.readFileSync(filename);
+        content = handleRangeHeaders(content, req, res);
+
+        let contentType = mime.getType(filename);
+
+        // do not add charset to WebAssembly files, otherwise compileStreaming will fail in the client
+        if (!/\.wasm$/.test(filename)) {
+          contentType += '; charset=UTF-8';
+        }
+
+        res.setHeader('Content-Type', contentType);
+        res.setHeader('Content-Length', content.length);
+
+        const { headers } = context.options;
+        if (headers) {
+          for (const name in headers) {
+            if ({}.hasOwnProperty.call(headers, name)) {
+              res.setHeader(name, context.options.headers[name]);
+            }
+          }
+        }
+        // Express automatically sets the statusCode to 200, but not all servers do (Koa).
+        res.statusCode = res.statusCode || 200;
+        if (res.send) res.send(content);
+        else res.end(content);
+        resolve();
+      }
+    }));
+  };
+};
diff --git a/node_modules/webpack-dev-middleware/lib/reporter.js b/node_modules/webpack-dev-middleware/lib/reporter.js
new file mode 100644
index 00000000..3c820f7e
--- /dev/null
+++ b/node_modules/webpack-dev-middleware/lib/reporter.js
@@ -0,0 +1,30 @@
+'use strict';
+
+module.exports = function reporter(middlewareOptions, options) {
+  const { log, state, stats } = options;
+
+  if (state) {
+    const displayStats = (middlewareOptions.stats !== false);
+
+    if (displayStats) {
+      if (stats.hasErrors()) {
+        log.error(stats.toString(middlewareOptions.stats));
+      } else if (stats.hasWarnings()) {
+        log.warn(stats.toString(middlewareOptions.stats));
+      } else {
+        log.info(stats.toString(middlewareOptions.stats));
+      }
+    }
+
+    let message = 'Compiled successfully.';
+
+    if (stats.hasErrors()) {
+      message = 'Failed to compile.';
+    } else if (stats.hasWarnings()) {
+      message = 'Compiled with warnings.';
+    }
+    log.info(message);
+  } else {
+    log.info('Compiling...');
+  }
+};
diff --git a/node_modules/webpack-dev-middleware/lib/util.js b/node_modules/webpack-dev-middleware/lib/util.js
new file mode 100644
index 00000000..e8a70bef
--- /dev/null
+++ b/node_modules/webpack-dev-middleware/lib/util.js
@@ -0,0 +1,173 @@
+'use strict';
+
+const path = require('path');
+const { parse } = require('url');
+const querystring = require('querystring');
+const parseRange = require('range-parser');
+
+const HASH_REGEXP = /[0-9a-f]{10,}/;
+
+// support for multi-compiler configuration
+// see: https://github.com/webpack/webpack-dev-server/issues/641
+function getPaths(publicPath, compiler, url) {
+  const compilers = compiler && compiler.compilers;
+  if (Array.isArray(compilers)) {
+    let compilerPublicPath;
+
+    // the path portion of compilerPublicPath
+    let compilerPublicPathBase;
+
+    for (let i = 0; i < compilers.length; i++) {
+      compilerPublicPath = compilers[i].options
+    && compilers[i].options.output
+    && compilers[i].options.output.publicPath;
+
+      if (compilerPublicPath) {
+        if (compilerPublicPath.indexOf('/') === 0) {
+          compilerPublicPathBase = compilerPublicPath;
+        } else {
+          // handle the case where compilerPublicPath is a URL with hostname
+          compilerPublicPathBase = parse(compilerPublicPath).pathname;
+        }
+
+        // check the url vs the path part of the compilerPublicPath
+        if (url.indexOf(compilerPublicPathBase) === 0) {
+          return {
+            publicPath: compilerPublicPath,
+            outputPath: compilers[i].outputPath
+          };
+        }
+      }
+    }
+  }
+  return {
+    publicPath,
+    outputPath: compiler.outputPath
+  };
+}
+
+function ready(context, fn, req) {
+  if (context.state) {
+    return fn(context.webpackStats);
+  }
+
+  context.log.info(`wait until bundle finished: ${req.url || fn.name}`);
+  context.callbacks.push(fn);
+}
+
+module.exports = {
+  getFilenameFromUrl(pubPath, compiler, url) {
+    const { outputPath, publicPath } = getPaths(pubPath, compiler, url);
+    // localPrefix is the folder our bundle should be in
+    const localPrefix = parse(publicPath || '/', false, true);
+    const urlObject = parse(url);
+    let filename;
+
+    // publicPath has the hostname that is not the same as request url's, should fail
+    if (localPrefix.hostname !== null && urlObject.hostname !== null &&
+        localPrefix.hostname !== urlObject.hostname) {
+      return false;
+    }
+
+    // publicPath is not in url, so it should fail
+    if (publicPath && localPrefix.hostname === urlObject.hostname &&
+        url.indexOf(publicPath) !== 0) {
+      return false;
+    }
+
+    // strip localPrefix from the start of url
+    if (urlObject.pathname.indexOf(localPrefix.pathname) === 0) {
+      filename = urlObject.pathname.substr(localPrefix.pathname.length);
+    }
+
+    if (!urlObject.hostname && localPrefix.hostname &&
+        url.indexOf(localPrefix.path) !== 0) {
+      return false;
+    }
+
+    let uri = outputPath;
+
+    /* istanbul ignore if */
+    if (process.platform === 'win32') {
+      // Path Handling for Microsoft Windows
+      if (filename) {
+        uri = path.posix.join((outputPath || ''), querystring.unescape(filename));
+
+        if (!path.win32.isAbsolute(uri)) {
+          uri = `/${uri}`;
+        }
+      }
+
+      return uri;
+    }
+
+    // Path Handling for all other operating systems
+    if (filename) {
+      uri = path.posix.join((outputPath || ''), filename);
+
+      if (!path.posix.isAbsolute(uri)) {
+        uri = `/${uri}`;
+      }
+    }
+
+    // if no matches, use outputPath as filename
+    return querystring.unescape(uri);
+  },
+
+  handleRangeHeaders(content, req, res) {
+    // assumes express API. For other servers, need to add logic to access
+    // alternative header APIs
+    res.setHeader('Accept-Ranges', 'bytes');
+
+    if (req.headers.range) {
+      const ranges = parseRange(content.length, req.headers.range);
+
+      // unsatisfiable
+      if (ranges === -1) {
+        res.setHeader('Content-Range', `bytes */${content.length}`);
+        res.statusCode = 416;
+      }
+
+      // valid (syntactically invalid/multiple ranges are treated as a
+      // regular response)
+      if (ranges !== -2 && ranges.length === 1) {
+        const { length } = content;
+
+        // Content-Range
+        res.statusCode = 206;
+        res.setHeader(
+          'Content-Range',
+          `bytes ${ranges[0].start}-${ranges[0].end}/${length}`
+        );
+
+        content = content.slice(ranges[0].start, ranges[0].end + 1);
+      }
+    }
+
+    return content;
+  },
+
+  handleRequest(context, filename, processRequest, req) {
+    // in lazy mode, rebuild on bundle request
+    if (context.options.lazy && (!context.options.filename || context.options.filename.test(filename))) {
+      context.rebuild();
+    }
+
+    if (HASH_REGEXP.test(filename)) {
+      try {
+        if (context.fs.statSync(filename).isFile()) {
+          processRequest();
+          return;
+        }
+      } catch (e) {
+        // eslint-disable-line
+      }
+    }
+
+    ready(context, processRequest, req);
+  },
+
+  noop: () => {},
+
+  ready
+};