Drop laravel elixir, we’ll use nginx’s etag feature for cache-ing

public/assets/bower/fetch.js

@@ -5,6 +5,21 @@
     return
   }
 
+  var support = {
+    searchParams: 'URLSearchParams' in self,
+    iterable: 'Symbol' in self && 'iterator' in Symbol,
+    blob: 'FileReader' in self && 'Blob' in self && (function() {
+      try {
+        new Blob()
+        return true
+      } catch(e) {
+        return false
+      }
+    })(),
+    formData: 'FormData' in self,
+    arrayBuffer: 'ArrayBuffer' in self
+  }
+
   function normalizeName(name) {
     if (typeof name !== 'string') {
       name = String(name)
@@ -22,6 +37,24 @@
     return value
   }
 
+  // Build a destructive iterator for the value list
+  function iteratorFor(items) {
+    var iterator = {
+      next: function() {
+        var value = items.shift()
+        return {done: value === undefined, value: value}
+      }
+    }
+
+    if (support.iterable) {
+      iterator[Symbol.iterator] = function() {
+        return iterator
+      }
+    }
+
+    return iterator
+  }
+
   function Headers(headers) {
     this.map = {}
 
@@ -77,6 +110,28 @@
     }, this)
   }
 
+  Headers.prototype.keys = function() {
+    var items = []
+    this.forEach(function(value, name) { items.push(name) })
+    return iteratorFor(items)
+  }
+
+  Headers.prototype.values = function() {
+    var items = []
+    this.forEach(function(value) { items.push(value) })
+    return iteratorFor(items)
+  }
+
+  Headers.prototype.entries = function() {
+    var items = []
+    this.forEach(function(value, name) { items.push([name, value]) })
+    return iteratorFor(items)
+  }
+
+  if (support.iterable) {
+    Headers.prototype[Symbol.iterator] = Headers.prototype.entries
+  }
+
   function consumed(body) {
     if (body.bodyUsed) {
       return Promise.reject(new TypeError('Already read'))
@@ -107,23 +162,9 @@
     return fileReaderReady(reader)
   }
 
-  var support = {
-    blob: 'FileReader' in self && 'Blob' in self && (function() {
-      try {
-        new Blob()
-        return true
-      } catch(e) {
-        return false
-      }
-    })(),
-    formData: 'FormData' in self,
-    arrayBuffer: 'ArrayBuffer' in self
-  }
-
   function Body() {
     this.bodyUsed = false
 
-
     this._initBody = function(body) {
       this._bodyInit = body
       if (typeof body === 'string') {
@@ -132,6 +173,8 @@
         this._bodyBlob = body
       } else if (support.formData && FormData.prototype.isPrototypeOf(body)) {
         this._bodyFormData = body
+      } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {
+        this._bodyText = body.toString()
       } else if (!body) {
         this._bodyText = ''
       } else if (support.arrayBuffer && ArrayBuffer.prototype.isPrototypeOf(body)) {
@@ -146,6 +189,8 @@
           this.headers.set('content-type', 'text/plain;charset=UTF-8')
         } else if (this._bodyBlob && this._bodyBlob.type) {
           this.headers.set('content-type', this._bodyBlob.type)
+        } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {
+          this.headers.set('content-type', 'application/x-www-form-urlencoded;charset=UTF-8')
         }
       }
     }
@@ -349,13 +394,8 @@
       }
 
       xhr.onload = function() {
-        var status = (xhr.status === 1223) ? 204 : xhr.status
-        if (status < 100 || status > 599) {
-          reject(new TypeError('Network request failed'))
-          return
-        }
         var options = {
-          status: status,
+          status: xhr.status,
           statusText: xhr.statusText,
           headers: headers(xhr),
           url: responseURL()