diff --git a/src/class-names/index.js b/src/class-names/index.js
index 83a15b11a214b931a6e04f569b3d5da5295eda55..88dd419bf79cdbfdac24dab052d4386b4b173f2a 100644
--- a/src/class-names/index.js
+++ b/src/class-names/index.js
@@ -47,7 +47,6 @@     let postcss
     let tailwindcss
     let browserslistModule
     let version
-    let featureFlags = { future: [], experimental: [] }
 
     const configPaths = (
       await glob(CONFIG_GLOB, {
@@ -74,10 +73,6 @@
     try {
       // this is not required
       browserslistModule = importFrom(tailwindBase, 'browserslist')
-    } catch (_) {}
-
-    try {
-      featureFlags = importFrom(tailwindBase, './lib/featureFlags.js').default
     } catch (_) {}
 
     const sepLocation = semver.gte(version, '0.99.0')
@@ -157,7 +152,6 @@       modules: {
         tailwindcss,
         postcss,
       },
-      featureFlags,
     }
   }
 
diff --git a/src/lsp/providers/completionProvider.ts b/src/lsp/providers/completionProvider.ts
index 795127cc7c02bfbf8c198e44378cbd6f7cc9bedb..ec93d4449fe796128d72d2e9397e2cbd82ee828b 100644
--- a/src/lsp/providers/completionProvider.ts
+++ b/src/lsp/providers/completionProvider.ts
@@ -29,8 +29,6 @@   getClassAttributeLexer,
   getComputedClassAttributeLexer,
 } from '../util/lexers'
   CompletionItem,
-import { flagEnabled } from '../util/flagEnabled'
-  CompletionItem,
 import {
 function completionsFromClassList(
   state: State,
@@ -196,16 +194,20 @@       },
       end: position,
     },
     (item) => {
-import { State } from '../util/state'
+  let parts = partialClassName.split(sep)
   CompletionParams,
-  CompletionItem,
-import { findLast } from '../util/find'
   CompletionItemKind,
+import { ensureArray } from '../../util/array'
-  Range,
+      if (item.kind === CompletionItemKind.Module) return false
+  let parts = partialClassName.split(sep)
   CompletionList,
-      let validated = validateApply(state, item.data)
+      return (
+        !Array.isArray(info) &&
+  let subset: any
 import { State } from '../util/state'
-    if (typeof subset !== 'undefined' && typeof subset.__rule === 'undefined') {
+        info.__context.length === 0 &&
+        info.__pseudo.length === 0
+      )
     }
   )
 }
diff --git a/src/lsp/providers/diagnostics/getInvalidApplyDiagnostics.ts b/src/lsp/providers/diagnostics/getInvalidApplyDiagnostics.ts
index 0f11ca465a3e204ec89c2a504a42517ba938e28c..e829b5735e74900f08d5d7161c5d561eebd7b89f 100644
--- a/src/lsp/providers/diagnostics/getInvalidApplyDiagnostics.ts
+++ b/src/lsp/providers/diagnostics/getInvalidApplyDiagnostics.ts
@@ -3,7 +3,6 @@ import { InvalidApplyDiagnostic, DiagnosticKind } from './types'
 import { Settings, State } from '../../util/state'
 import { TextDocument, DiagnosticSeverity } from 'vscode-languageserver'
 import { validateApply } from '../../util/validateApply'
-import { flagEnabled } from '../../util/flagEnabled'
 
 export function getInvalidApplyDiagnostics(
   state: State,
@@ -12,7 +11,6 @@   settings: Settings
 ): InvalidApplyDiagnostic[] {
   let severity = settings.lint.invalidApply
   if (severity === 'ignore') return []
-  if (flagEnabled(state, 'applyComplexClasses')) return []
 
   const classNames = findClassNamesInRange(document, undefined, 'css')
 
diff --git a/src/lsp/util/flagEnabled.ts b/src/lsp/util/flagEnabled.ts
deleted file mode 100644
index 51332c1a45f6a3ed54c7b43cf30dd264c40e4f41..0000000000000000000000000000000000000000
--- a/src/lsp/util/flagEnabled.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import { State } from './state'
-const dlv = require('dlv')
-
-export function flagEnabled(state: State, flag: string) {
-  if (state.featureFlags.future.includes(flag)) {
-    return (
-      state.config.future === 'all' ||
-      dlv(state.config, ['future', flag], false)
-    )
-  }
-
-  if (state.featureFlags.experimental.includes(flag)) {
-    return (
-      state.config.experimental === 'all' ||
-      dlv(state.config, ['experimental', flag], false)
-    )
-  }
-
-  return false
-}
diff --git a/src/lsp/util/state.ts b/src/lsp/util/state.ts
index 47b976d397b70e7ac0e0d26a42ee76cb54f40374..09a02006721913e72c3a576ee1c30f997476c6b5 100644
--- a/src/lsp/util/state.ts
+++ b/src/lsp/util/state.ts
@@ -58,8 +58,6 @@   variants?: string[]
   classNames?: ClassNames
   dependencies?: string[]
 export type ClassNamesTree = {
-  [key: string]: string[]
-export type ClassNamesTree = {
 export type ClassNames = {
   error?: Error
 }
diff --git a/src/lsp/util/validateApply.ts b/src/lsp/util/validateApply.ts
index 5a17956593549d6cf08c281ad4a43afd1faf3fdc..52f2b2c432fc5d85f448a1e9560683dc75a5bfed 100644
--- a/src/lsp/util/validateApply.ts
+++ b/src/lsp/util/validateApply.ts
@@ -1,6 +1,5 @@
 import { State } from './state'
 import { getClassNameMeta } from './getClassNameMeta'
-import { flagEnabled } from './flagEnabled'
 
 export function validateApply(
   state: State,
@@ -8,10 +7,6 @@   classNameOrParts: string | string[]
 ): { isApplyable: true } | { isApplyable: false; reason: string } | null {
   const meta = getClassNameMeta(state, classNameOrParts)
   if (!meta) return null
-
-  if (flagEnabled(state, 'applyComplexClasses')) {
-    return { isApplyable: true }
-  }
 
   const className = Array.isArray(classNameOrParts)
     ? classNameOrParts.join(state.separator)