make pseudo class name meta always an array

src/class-names/extractClassNames.js

@@ -36,7 +36,7 @@ function getClassNamesFromSelector(selector) {
           className: node.value.trim(),
           scope: createSelectorFromNodes(scope),
           __rule: j === subSelectors[i].nodes.length - 1,
-          __pseudo: pseudo.length === 0 ? null : pseudo.map(String),
+          __pseudo: pseudo.map(String),
         })
       }
       scope.push(node, ...pseudo)
@@ -115,9 +115,7 @@ async function process(groups) {
 
           dsetEach(tree, [...baseKeys, ...index], decls)
         }
-        if (classNames[i].__pseudo) {
-          dset(tree, [...baseKeys, '__pseudo'], classNames[i].__pseudo)
-        }
+        dset(tree, [...baseKeys, ...index, '__pseudo'], classNames[i].__pseudo)
         dset(tree, [...baseKeys, ...index, '__scope'], classNames[i].scope)
         dset(
           tree,
@@ -126,9 +124,7 @@ async function process(groups) {
         )
 
         // common context
-        if (classNames[i].__pseudo) {
-          context.push(...classNames[i].__pseudo)
-        }
+        context.push(...classNames[i].__pseudo)
 
         for (let i = 0; i < contextKeys.length; i++) {
           if (typeof commonContext[contextKeys[i]] === 'undefined') {

src/lsp/providers/completionProvider.ts

@@ -200,8 +200,8 @@ function provideAtApplyCompletions(
       return (
         !Array.isArray(info) &&
         info.__source === 'utilities' &&
-        (info.__context || []).length === 0 &&
-        (info.__pseudo || []).length === 0
+        info.__context.length === 0 &&
+        info.__pseudo.length === 0
       )
     }
   )

src/lsp/util/stringify.ts

@@ -54,7 +54,7 @@ export function stringifyCss(className: string, obj: any): string {
 }
 
 function augmentClassName(className: string, obj: any): string {
-  const pseudo = obj.__pseudo ? obj.__pseudo.join('') : ''
+  const pseudo = obj.__pseudo.join('')
   const scope = obj.__scope ? `${obj.__scope} ` : ''
   return `${scope}.${escapeClassName(className)}${pseudo}`
 }