diff --git a/src/server.ts b/src/server.ts
index caba364db4cd3b990d0e51aa6d7c2f02c2baea81..d989855fee7e6702793983f14d3e637f6020c9c0 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -577,9 +577,6 @@     let userPurge
     let userVariants: any
     let userMode: any
     let userPlugins: any
-    let presetModes: any[] = []
-    let presetVariants: any[] = []
-
     let hook = new Hook(fs.realpathSync(state.configPath), (exports) => {
       userSeperator = dlv(exports, sepLocation)
       if (typeof userSeperator !== 'string') {
@@ -592,37 +589,16 @@         sepLocation,
         `__TWSEP__${typeof userSeperator === 'undefined' ? ':' : userSeperator}__TWSEP__`
       )
       exports.purge = []
-
-      let mode: any
-      if (Array.isArray(exports.presets)) {
-        for (let preset of exports.presets) {
-          if (typeof preset.mode !== 'undefined') {
-            mode = preset.mode
-          }
-          presetModes.push(preset.mode)
-          delete preset.mode
-        }
-      }
-      if (typeof exports.mode !== 'undefined') {
-        mode = exports.mode
-      }
-      userMode = exports.mode
-      delete exports.mode
-
-      if (state.modules.jit && mode === 'jit') {
+      if (state.modules.jit && exports.mode === 'jit') {
         state.jit = true
         userVariants = exports.variants
         exports.variants = []
-
-        if (Array.isArray(exports.presets)) {
-          for (let preset of exports.presets) {
-            presetVariants.push(preset.variants)
-            preset.variants = []
-          }
-        }
       } else {
         state.jit = false
       }
+
+      userMode = exports.mode
+      delete exports.mode
 
       // inject JIT `matchUtilities` function
       if (Array.isArray(exports.plugins)) {
@@ -724,21 +700,6 @@       config.mode = userMode
     }
     if (typeof userPlugins !== 'undefined') {
       config.plugins = userPlugins
-    }
-
-    for (let index in presetModes) {
-      if (typeof presetModes[index] === 'undefined') {
-        delete config.presets[index].mode
-      } else {
-        config.presets[index].mode = presetModes[index]
-      }
-    }
-    for (let index in presetVariants) {
-      if (typeof presetVariants[index] === 'undefined') {
-        delete config.presets[index].variants
-      } else {
-        config.presets[index].variants = presetVariants[index]
-      }
     }
 
     if (state.dependencies) {