hmr support

Author: lili21

package.json

@@ -56,6 +56,7 @@
     "node": ">= 6.11.5"
   },
   "peerDependencies": {
+    "style-loader": "^0.20.3",
     "webpack": "^4.4.0"
   },
   "pre-commit": "lint-staged",

src/loader.js

@@ -7,6 +7,7 @@ import NodeTargetPlugin from 'webpack/lib/node/NodeTargetPlugin';
 import LibraryTemplatePlugin from 'webpack/lib/LibraryTemplatePlugin';
 import SingleEntryPlugin from 'webpack/lib/SingleEntryPlugin';
 import LimitChunkCountPlugin from 'webpack/lib/optimize/LimitChunkCountPlugin';
+import styleLoader from 'style-loader';
 
 const NS = path.dirname(fs.realpathSync(__filename));
 
@@ -25,8 +26,13 @@ const findModuleById = (modules, id) => {
   return null;
 };
 
-export function pitch(request) {
+export function pitch(request) { // eslint-disable-line consistent-return
   const query = loaderUtils.getOptions(this) || {};
+
+  if (query.hmr !== false) {
+    return styleLoader.pitch(request);
+  }
+
   const loaders = this.loaders.slice(this.loaderIndex + 1);
   this.addDependency(this.resourcePath);
   const childFilename = '*'; // eslint-disable-line no-path-concat

yarn.lock

@@ -7436,6 +7436,13 @@ strip-json-comments@^2.0.1, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
+style-loader@^0.20.3:
+  version "0.20.3"
+  resolved "https://registry.yarnpkg.com/style-loader/-/style-loader-0.20.3.tgz#ebef06b89dec491bcb1fdb3452e913a6fd1c10c4"
+  dependencies:
+    loader-utils "^1.1.0"
+    schema-utils "^0.4.5"
+
 suffix@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/suffix/-/suffix-0.1.0.tgz#3e46966de56af17600385e58db8ec659dd797907"