Use read-cache to cache file reads for performance

Author: RyanZim

index.js

@@ -5,6 +5,7 @@ const path = require('path')
 
 const ora = require('ora')
 const stdin = require('get-stdin')
+const read = require('read-cache')
 const chalk = require('chalk')
 const globber = require('globby')
 const chokidar = require('chokidar')
@@ -237,7 +238,7 @@ function files (files) {
         })
     }
 
-    return fs.readFile(file)
+    return read(file)
       .then((content) => css(content, file))
   }))
 }

package.json

@@ -25,6 +25,7 @@
     "postcss": "^5.2.16",
     "postcss-load-config": "^1.1.0",
     "postcss-reporter": "^3.0.0",
+    "read-cache": "^1.0.0",
     "yargs": "^7.0.2"
   },
   "devDependencies": {