From eeb72f7506711a4e9c4161c5842441d6121343c4 Mon Sep 17 00:00:00 2001
From: Izaak Schroeder <izaak.schroeder@gmail.com>
Date: Fri, 19 May 2017 17:00:32 -0700
Subject: [PATCH] Add server-side CSS module hook.

If you're using this loader on the server-side without doing webpack server side transforms you can use this hook to rewrite a module's exports to its equivalent CSS identifier. Because of how webpack works you will need to provide the context and local identifier name that was used to build the client-side CSS (typically `process.cwd()` is enough for the context). Example usage:

```javascript
var css = require('css-js-loader/register');

css(process.cwd(), '[hash:base64]');
```

Note that I particularly don't condone this kind of thing (especially mucking about hooking node internals), but not all environments support server-side webpack either due to political or technical reasons so this will at least allow those users to play with this package.
---
 register.js | 24 ++++++++++++++++++++++++
 rewrite.js  | 15 +++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 register.js
 create mode 100644 rewrite.js

diff --git a/register.js b/register.js
new file mode 100644
index 0000000..ba99daa
--- /dev/null
+++ b/register.js
@@ -0,0 +1,24 @@
+var Module = require('module');
+
+function register(context, localIdentName) {
+  function f(_, r, m, __filename) {
+    var q = __WRAPPED__;
+    q.apply(this, arguments);
+    if (/\.css\.js$/.exec(__filename)) {
+      r('__REWRITE__')(__CONTEXT__, __IDENT_NAME__, m);
+    }
+  }
+
+  var oldWrap = Module.wrap;
+  var body = '(' + f.toString() + ')';
+  body = body.replace(/__REWRITE__/, require.resolve('./rewrite'));
+  body = body.replace(/__CONTEXT__/, JSON.stringify(context));
+  body = body.replace(/__IDENT_NAME__/, JSON.stringify(localIdentName));
+  Module.wrap = function webpackPolyfill(content) {
+    return body.replace(/__WRAPPED__/, function() {
+      return oldWrap(content);
+    });
+  };
+}
+
+module.exports = register;
diff --git a/rewrite.js b/rewrite.js
new file mode 100644
index 0000000..48954df
--- /dev/null
+++ b/rewrite.js
@@ -0,0 +1,15 @@
+/* eslint-disable guard-for-in */
+
+var path = require('path');
+var getLocalIdent = require('css-loader/lib/getLocalIdent');
+
+module.exports = function(context, localIdentName, module) {
+  for (var key in module.exports) {
+    module.exports[key] = getLocalIdent(
+      {resourcePath: module.filename},
+      localIdentName,
+      key,
+      {context: context, hashPrefix: ''}
+    );
+  }
+};