diff --git a/lib/filter.js b/lib/filter.js
index f5f03fb..20a021f 100644
--- a/lib/filter.js
+++ b/lib/filter.js
@@ -16,9 +16,9 @@ function logicHtml (str, data) {
   let path = data.path
   let exclude = options.exclude
 
-	// Return if a path matches exclusion pattern
+  // Return if a path matches exclusion pattern
   if (path && exclude && exclude.length) {
-		if (nanomatch.some(path, exclude, { matchBase: true })) return str
+    if (nanomatch.some(path, exclude, { matchBase: true })) return str
   }
 
   let result = Htmlminifier(str, options)
@@ -39,9 +39,9 @@ function logicCss (str, data) {
   let path = data.path
   let exclude = options.exclude
 
-	// Return if a path matches exclusion pattern
+  // Return if a path matches exclusion pattern
   if (path && exclude && exclude.length) {
-		if (nanomatch.some(path, exclude, { matchBase: true })) return str
+    if (nanomatch.some(path, exclude, { matchBase: true })) return str
   }
 
   return new Promise(function (resolve, reject) {
@@ -66,13 +66,13 @@ function logicJs (str, data) {
   let path = data.path
   let exclude = options.exclude
 
-	// Return if a path matches exclusion pattern
+  // Return if a path matches exclusion pattern
   if (path && exclude && exclude.length) {
-		if (nanomatch.some(path, exclude, { matchBase: true })) return str
+    if (nanomatch.some(path, exclude, { matchBase: true })) return str
   }
 
   // Terser doesn't like unsupported options
-	const jsOptions = Object.assign({}, options)
+  const jsOptions = Object.assign({}, options)
   delete jsOptions.enable
   delete jsOptions.exclude
   delete jsOptions.logger
@@ -96,9 +96,9 @@ function logicGzip () {
   let routeList = route.list()
 
   return Promise.all(routeList.filter(path => (path.endsWith('.html') || path.endsWith('.js') || path.endsWith('.css')
-																							|| path.endsWith('.xml') || path.endsWith('.json') || path.endsWith('.txt')
-																							|| path.endsWith('.ttf') || path.endsWith('.atom') || path.endsWith('.stl')
-																							|| path.endsWith('.svg') || path.endsWith('.eot'))).map(path => {
+                                              || path.endsWith('.xml') || path.endsWith('.json') || path.endsWith('.txt')
+                                              || path.endsWith('.ttf') || path.endsWith('.atom') || path.endsWith('.stl')
+                                              || path.endsWith('.svg') || path.endsWith('.eot'))).map(path => {
     return new Promise((resolve, reject) => {
       // Grab all assets using hexo router
       let assetPath = route.get(path)
@@ -139,9 +139,9 @@ function logicBrotli () {
   let routeList = route.list()
 
   return Promise.all(routeList.filter(path => (path.endsWith('.html') || path.endsWith('.js') || path.endsWith('.css')
-																							|| path.endsWith('.xml') || path.endsWith('.json') || path.endsWith('.txt')
-																							|| path.endsWith('.ttf') || path.endsWith('.atom') || path.endsWith('.stl')
-																							|| path.endsWith('.svg') || path.endsWith('.eot'))).map(path => {
+                                              || path.endsWith('.xml') || path.endsWith('.json') || path.endsWith('.txt')
+                                              || path.endsWith('.ttf') || path.endsWith('.atom') || path.endsWith('.stl')
+                                              || path.endsWith('.svg') || path.endsWith('.eot'))).map(path => {
     return new Promise((resolve, reject) => {
       // Grab all assets using hexo router
       let assetPath = route.get(path)