diff --git a/README.md b/README.md
index 0264fc3..a36af84 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ Blocks are expressed as:
- **type**: either `js`, `css` or `remove`
- **alternate search path**: (optional) By default the input files are relative to the treated file. Alternate search path allows one to change that
- **path**: the file path of the optimized file, the target output
-- **parameters**: extra parameters that should be added to the tag
+- **parameters**: extra parameters that should be added to the tag. By default `rel="stylesheet"` attribute is added to css link tag, your can overwrite it by passing your own rel parameter, e.g. `rel="preload"`
An example of this in completed form can be seen below:
diff --git a/lib/refManager.js b/lib/refManager.js
index d723ef2..6bc641d 100644
--- a/lib/refManager.js
+++ b/lib/refManager.js
@@ -16,17 +16,25 @@ module.exports = {
transformCSSRefs: function (block, target, attbs) {
var ref = '';
+ var rel = 'rel="stylesheet" ';
// css link element regular expression
// TODO: Determine if 'href' attribute is present.
var regcss = /|\))/gmi;
+ // rel attribute regular expression
+ var regrel = /(^|\s)rel=/i;
+ // if rel exists in attributes, set the default one empty
+ if (regrel.test(attbs)) {
+ rel = '';
+ }
+
// Check to see if there are any css references at all.
if (block.search(regcss) !== -1) {
if (attbs) {
- ref = '';
+ ref = '';
} else {
- ref = '';
+ ref = '';
}
}
diff --git a/test/test.js b/test/test.js
index 38e1e02..b395204 100644
--- a/test/test.js
+++ b/test/test.js
@@ -144,6 +144,12 @@ describe('html-ref-replace', function() {
expect(result[1]).to.eql({ css: { '/css/combined.css': { 'assets': [ '/css/one.css', '/css/two.css' ] }}});
});
+ it('should replace css blocks with rel', function() {
+ var result = useRef(fread(djoin('testfiles/15-rel.html')));
+ expect(result[0]).to.equal(fread(djoin('testfiles/15-rel-expected.html')));
+ expect(result[1]).to.eql({ css: { '/css/combined.css': { 'assets': [ '/css/one.css', '/css/two.css' ] }}});
+ });
+
it('should reserve IE conditional comments', function() {
var result = useRef(fread(djoin('testfiles/16.html')));
expect(result[0]).to.equal(fread(djoin('testfiles/16-expected.html')));
diff --git a/test/testfiles/15-rel-expected.html b/test/testfiles/15-rel-expected.html
new file mode 100644
index 0000000..7e87b5a
--- /dev/null
+++ b/test/testfiles/15-rel-expected.html
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/test/testfiles/15-rel.html b/test/testfiles/15-rel.html
new file mode 100644
index 0000000..02f36d4
--- /dev/null
+++ b/test/testfiles/15-rel.html
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file