lib: support more attributes for early hint link

PR-URL: #44874 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: James M Snell <[email protected]>

Author: anonrig

lib/internal/validators.js

@@ -441,7 +441,7 @@ function validateUnion(value, name, union){
 }
 }
 
-constlinkValueRegExp=/^(?:<[^>]*>;)\s*(?:rel=(")?[^;"]*\1;?)\s*(?:(?:as|anchor|title)=(")?[^;"]*\2)?$/;
+constlinkValueRegExp=/^(?:<[^>]*>;)\s*(?:rel=(")?[^;"]*\1;?)\s*(?:(?:as|anchor|title|crossorigin|disabled|fetchpriority|rel|referrerpolicy)=(")?[^;"]*\2)?$/;
 
 /**
  * @param{any} value

test/parallel/test-validators.js

@@ -12,6 +12,7 @@ const{
  validateString,
  validateInt32,
  validateUint32,
+ validateLinkHeaderValue,
 }=require('internal/validators');
 const{MAX_SAFE_INTEGER,MIN_SAFE_INTEGER}=Number;
 constoutOfRangeError={
@@ -154,3 +155,15 @@ const invalidArgValueError ={
 code: 'ERR_INVALID_ARG_TYPE'
 }));
 }
+
+{
+// validateLinkHeaderValue type validation.
+[
+['</styles.css> rel=preload; as=style','</styles.css> rel=preload; as=style'],
+['</styles.css> rel=preload; title=hello','</styles.css> rel=preload; title=hello'],
+['</styles.css> rel=preload; crossorigin=hello','</styles.css> rel=preload; crossorigin=hello'],
+['</styles.css> rel=preload; disabled=true','</styles.css> rel=preload; disabled=true'],
+['</styles.css> rel=preload; fetchpriority=high','</styles.css> rel=preload; fetchpriority=high'],
+['</styles.css> rel=preload; referrerpolicy=origin','</styles.css> rel=preload; referrerpolicy=origin'],
+].forEach(([value,expected])=>assert.strictEqual(validateLinkHeaderValue(value),expected));
+}