refactoring for 2.0.0 (#233)

.editorconfig

@@ -1,9 +1,13 @@
-root = true
+# editorconfig.org
 
-[*.js]
-indent_style=tab
-trim_trailing_whitespace=true
-
-[*.yml,package.json]
+[*]
+charset = utf-8
 indent_style = space
 indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[.md]
+insert_final_newline = false
+trim_trailing_whitespace = false

.eslintrc

@@ -1,54 +1,15 @@
 {
-    "env": {
-        "es6": true,
-        "node": true,
-        "mocha": true
-    },
-    "rules": {
-        "indent": [2, "tab", { "SwitchCase": 1 }],
-        "brace-style": ["error", "1tbs"],
-        "quotes": ["error", "double"],
-        "semi": "error",
-        "no-eval": "error",
-        "eol-last": "error",
-        "no-redeclare": "error",
-        "no-extra-bind": "error",
-        "no-process-exit": "error",
-        "no-inner-declarations": "warn",
-        "no-loop-func": "warn",
-        "no-undef": "error",
-        "no-trailing-spaces": "error",
-        "space-before-function-paren": ["error", "never"],
-        "no-multi-spaces": "error",
-        "space-in-parens": "error",
-        "space-before-blocks": "error",
-        "no-unused-vars": "error",
-        "no-dupe-keys": "error",
-        "valid-typeof": "error",
-        "object-curly-spacing": ["error", "always"],
-        "key-spacing": "error",
-        "space-infix-ops": "error",
-        "no-negated-in-lhs": "error",
-        "no-octal": "error",
-        "no-regex-spaces": "error",
-        "no-self-assign": "error",
-        "no-sparse-arrays": "error",
-        "no-unexpected-multiline": "error",
-        "no-unreachable": "error",
-        "no-extra-semi": "error",
-        "no-func-assign": "error",
-        "no-invalid-regexp": "error",
-        "keyword-spacing": ["error", {
-            "after": false,
-            "overrides": {
-                "try": {"after": true},
-                "else": {"after": true},
-                "throw": {"after": true},
-                "case": {"after": true},
-                "return": {"after": true},
-                "finally": {"after": true},
-                "do": {"after": true}
-            }
-        }]
-    }
+  "extends": "webpack",
+  "parserOptions": {
+    "sourceType": "script"
+  },
+  "rules": {
+    "brace-style": ["error", "1tbs", { allowSingleLine: false }],
+    "comma-dangle": ["error", "never"],
+    "curly": ["error"],
+    "consistent-return": "off",
+    "no-param-reassign": "off",
+    "no-undefined": "off",
+    "strict": ["error", "safe"]
+  }
 }

.gitignore

@@ -1,2 +1,2 @@
-/node_modules
-/coverage
+node_modules
+coverage

.travis.yml

@@ -1,11 +1,14 @@
 sudo: false
 language: node_js
+
 node_js:
-  - "4"
-  - "6"
-  - "7"
-  - "8"
-script: npm run travis
+  - '9'
+  - '8'
+  - '6'
+
+script:
+  npm run ci
+
 after_success:
   - cat ./coverage/coverage.json | node_modules/codecov.io/bin/codecov.io.js
   - rm -rf ./coverage

breaking-changes.md

@@ -0,0 +1,18 @@
+## Node Version Support
+
+webpack-dev-middleware version 2 and higher will only support Node 6.x and higher. Active
+LTS for Node 4.x ended October 31st, 2017 and entered maintenance on that date.
+Likewise, the version 1.x branch of webpack-dev-middleware will enter maintenance on
+that date.
+
+## Informative Changes
+
+- logging is now handled by `log-level` and follows the same patterns as
+`webpack-dev-server`.
+
+## Breaking Changes
+
+- `reportTime` option renamed to `logTime`
+- `noInfo` option removed in favor of setting a `logLevel` higher than `'info'`
+- `quiet` option removed in favor of `logLevel: 'silent'`
+- `reporter` signature changed to `reporter(middlewareOptions, reporterOptions)`

index.js

@@ -0,0 +1,95 @@
+'use strict';
+
+const mime = require('mime');
+const createContext = require('./lib/context');
+const middleware = require('./lib/middleware');
+const reporter = require('./lib/reporter');
+const { getFilenameFromUrl, noop, ready, setFs } = require('./lib/util');
+
+require('loud-rejection/register');
+
+const defaults = {
+  logLevel: 'info',
+  logTime: false,
+  logger: null,
+  mimeTypes: null,
+  reporter,
+  stats: {
+    context: process.cwd()
+  },
+  watchOptions: {
+    aggregateTimeout: 200
+  }
+};
+
+module.exports = function wdm(compiler, opts) {
+  const options = Object.assign({}, defaults, opts);
+
+  if (options.lazy) {
+    if (typeof options.filename === 'string') {
+      const filename = options.filename
+        .replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&') // eslint-disable-line no-useless-escape
+        .replace(/\\\[[a-z]+\\\]/ig, '.+');
+
+      options.filename = new RegExp(`^[/]{0,1}${filename}$`);
+    }
+  }
+
+  // defining custom MIME type
+  if (options.mimeTypes) {
+    mime.define(options.mimeTypes);
+  }
+
+  const context = createContext(compiler, options);
+
+  // start watching
+  if (!options.lazy) {
+    const watching = compiler.watch(options.watchOptions, (err) => {
+      if (err) {
+        context.log.error(err.stack || err);
+        if (err.details) {
+          context.log.error(err.details);
+        }
+      }
+    });
+
+    context.watching = watching;
+  } else {
+    context.state = true;
+  }
+
+  setFs(context, compiler);
+
+  return Object.assign(middleware(context), {
+    close(callback) {
+      callback = callback || noop;
+
+      if (context.watching) {
+        context.watching.close(callback);
+      } else {
+        callback();
+      }
+    },
+
+    context,
+
+    fileSystem: context.fs,
+
+    getFilenameFromUrl: getFilenameFromUrl.bind(this, context.options.publicPath, context.compiler),
+
+    invalidate(callback) {
+      callback = callback || noop;
+      if (context.watching) {
+        ready(context, callback, {});
+        context.watching.invalidate();
+      } else {
+        callback();
+      }
+    },
+
+    waitUntilValid(callback) {
+      callback = callback || noop;
+      ready(context, callback, {});
+    }
+  });
+};