feat(reload): never act on incoming sourcemaps -

fixes BrowserSync/gulp-browser-sync#70

Author: shakyShane

dist/index.js

@@ -461,7 +461,13 @@ var options = {
         "link":   "href",
         "img":    "src",
         "script": "src"
-    }
+    },
+    blacklist: [
+        // never allow .map files through
+        function(incoming) {
+            return incoming.ext === "map";
+        }
+    ]
 };
 
 var hiddenElem;
@@ -746,6 +752,10 @@ sync.reload = function (bs) {
 
         if (data.basename && data.ext) {
 
+            if (sync.isBlacklisted(data)) {
+                return;
+            }
+
             var domData = sync.getElems(data.ext);
             var elems   = sync.getMatches(domData.elems, data.basename, domData.attr);
 
@@ -778,6 +788,16 @@ sync.getAttr = function (tagName) {
     return options.attrs[tagName];
 };
 
+/**
+ * @param incoming
+ * @returns {boolean}
+ */
+sync.isBlacklisted = function (incoming) {
+    return options.blacklist.some(function(fn) {
+        return fn(incoming);
+    });
+};
+
 /**
  * @param elems
  * @param url

dist/index.min.js

@@ -19,7 +19,13 @@ var options = {
         "link":   "href",
         "img":    "src",
         "script": "src"
-    }
+    },
+    blacklist: [
+        // never allow .map files through
+        function(incoming) {
+            return incoming.ext === "map";
+        }
+    ]
 };
 
 var hiddenElem;
@@ -304,6 +310,10 @@ sync.reload = function (bs) {
 
         if (data.basename && data.ext) {
 
+            if (sync.isBlacklisted(data)) {
+                return;
+            }
+
             var domData = sync.getElems(data.ext);
             var elems   = sync.getMatches(domData.elems, data.basename, domData.attr);
 
@@ -336,6 +346,16 @@ sync.getAttr = function (tagName) {
     return options.attrs[tagName];
 };
 
+/**
+ * @param incoming
+ * @returns {boolean}
+ */
+sync.isBlacklisted = function (incoming) {
+    return options.blacklist.some(function(fn) {
+        return fn(incoming);
+    });
+};
+
 /**
  * @param elems
  * @param url

lib/code-sync.js

@@ -70,6 +70,21 @@ describe("Code Sync", function () {
             matchesStub.restore();
             elemsStub.restore();
         });
+      it("ignores an event if blacklisted", function() {
+        var reload = codeSync.reload(bs);
+        var dataStub = {
+          path: "css/styles/styles.css.map",
+          basename: "styles.css.map",
+          ext: "map",
+          type: "reload",
+          log: true
+        };
+        var elemsStub = sinon.stub(codeSync, "getElems");
+        var actual = reload(dataStub);
+        elemsStub.restore();
+        assert.equal(actual, undefined);
+        assert.equal(elemsStub.called, false);
+      });
         it("swaps url when css file has existing params", function () {
             var matches = [
                 {