Move process.env read to sharedState module

Author: adamwathan

src/lib/setupContext.js

@@ -32,7 +32,7 @@ let env = sharedState.env
 // If the directory already exists we delete any existing touch files,
 // invalidating any caches associated with them.
 const touchDir =
-  process.env.TAILWIND_TOUCH_DIR || path.join(os.homedir() || os.tmpdir(), '.tailwindcss', 'touch')
+  env.TAILWIND_TOUCH_DIR || path.join(os.homedir() || os.tmpdir(), '.tailwindcss', 'touch')
 
 if (!sharedState.env.TAILWIND_DISABLE_TOUCH) {
   if (fs.existsSync(touchDir)) {

src/lib/sharedState.js

@@ -6,6 +6,7 @@ module.exports = {
     NODE_ENV: process.env.NODE_ENV,
     DEBUG: process.env.DEBUG !== undefined,
     TAILWIND_DISABLE_TOUCH: process.env.TAILWIND_DISABLE_TOUCH !== undefined,
+    TAILWIND_TOUCH_DIR: process.env.TAILWIND_TOUCH_DIR,
   },
   contextMap: new Map(),
   configContextMap: new Map(),