support special case for custom pseudo element selector

Author: g-plane

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Added support of special case for custom pseudo element selector.
+
 ## v2.11.4
 
 - Fixed parsing unclosed attribute selector (such as `a[href`).

parser.d.ts

@@ -12,7 +12,7 @@ type GetLastTag<I> = I extends `${string}${Combinators}${infer Right}`
     : GetLastTag<Right>
   : I
 
-type PseudoClassesFirstChar =
+type PseudoPrefix =
   | 'a'
   | 'b'
   | 'c'
@@ -31,6 +31,7 @@ type PseudoClassesFirstChar =
   | 'u'
   | 'v'
   | 'w'
+  | ':-'
 
 type Split<S> = S extends `${string},` // invalid selector
   ? unknown
@@ -108,9 +109,9 @@ type PostprocessEachUnchecked<I> =
     ? PostprocessEachUnchecked<`${Tag}&${Rest}`>
     : I extends `${infer Tag}#${string}`
     ? PostprocessEachUnchecked<Tag>
-    : I extends `${infer Tag}:${PseudoClassesFirstChar}${string}&${infer Rest}`
+    : I extends `${infer Tag}:${PseudoPrefix}${string}&${infer Rest}`
     ? PostprocessEachUnchecked<`${Tag}&${Rest}`>
-    : I extends `${infer Tag}:${PseudoClassesFirstChar}${string}`
+    : I extends `${infer Tag}:${PseudoPrefix}${string}`
     ? PostprocessEachUnchecked<Tag>
     : I extends `${string}|${infer Tag}` // namespace prefix
     ? PostprocessEachUnchecked<Tag>

parser.test.ts

@@ -357,6 +357,7 @@ type _Tests = [
   >,
   Expect<Equal<ParseSelector<':func(arg)'>, Element>>,
   Expect<Equal<ParseSelector<'::func(arg)'>, Element>>,
+  Expect<Equal<ParseSelector<'a::-p-text(Hello)'>, HTMLAnchorElement>>,
 ]
 
 declare function delegate<