diff --git a/package.json b/package.json
index a6427741..5cfee3dd 100644
--- a/package.json
+++ b/package.json
@@ -64,6 +64,7 @@
     "eslint": "8.47.0",
     "h3": "^1.8.0",
     "jquery": "^3.7.0",
+    "lit": "^2.8.0",
     "typescript": "^5.1.6",
     "unbuild": "^1.2.1",
     "vitest": "^0.34.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d7c1a030..3aaf3436 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -63,6 +63,9 @@ importers:
       jquery:
         specifier: ^3.7.0
         version: 3.7.0
+      lit:
+        specifier: ^2.8.0
+        version: 2.8.0
       typescript:
         specifier: ^5.1.6
         version: 5.1.6
@@ -828,6 +831,16 @@ packages:
       type-detect: 4.0.8
     dev: true
 
+  /@lit-labs/ssr-dom-shim@1.1.1:
+    resolution: {integrity: sha512-kXOeFbfCm4fFf2A3WwVEeQj55tMZa8c8/f9AKHMobQMkzNUfUj+antR3fRPaZJawsa1aZiP/Da3ndpZrwEe4rQ==}
+    dev: true
+
+  /@lit/reactive-element@1.6.3:
+    resolution: {integrity: sha512-QuTgnG52Poic7uM1AN5yJ09QMe0O28e10XzSvWDz02TJiiKee4stsiownEIadWm8nYzyDAyT+gKzUoZmiWQtsQ==}
+    dependencies:
+      '@lit-labs/ssr-dom-shim': 1.1.1
+    dev: true
+
   /@nodelib/fs.scandir@2.1.5:
     resolution: {integrity: sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==}
     engines: {node: '>= 8'}
@@ -1040,6 +1053,10 @@ packages:
     resolution: {integrity: sha512-21cFJr9z3g5dW8B0CVI9g2O9beqaThGQ6ZFBqHfwhzLDKUxaqTIy3vnfah/UPkfOiF2pLq+tGz+W8RyCskuslw==}
     dev: true
 
+  /@types/trusted-types@2.0.3:
+    resolution: {integrity: sha512-NfQ4gyz38SL8sDNrSixxU2Os1a5xcdFxipAFxYEuLUlvU2uDwS4NUpsImcf1//SlWItCVMMLiylsxbmNMToV/g==}
+    dev: true
+
   /@typescript-eslint/eslint-plugin@5.43.0(@typescript-eslint/parser@5.43.0)(eslint@8.47.0)(typescript@5.1.6):
     resolution: {integrity: sha512-wNPzG+eDR6+hhW4yobEmpR36jrqqQv1vxBq5LJO3fBAktjkvekfr4BRl+3Fn1CM/A+s8/EiGUbOMDoYqWdbtXA==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
@@ -3408,6 +3425,28 @@ packages:
     resolution: {integrity: sha512-7ylylesZQ/PV29jhEDl3Ufjo6ZX7gCqJr5F7PKrqc93v7fzSymt1BpwEU8nAUXs8qzzvqhbjhK5QZg6Mt/HkBg==}
     dev: true
 
+  /lit-element@3.3.3:
+    resolution: {integrity: sha512-XbeRxmTHubXENkV4h8RIPyr8lXc+Ff28rkcQzw3G6up2xg5E8Zu1IgOWIwBLEQsu3cOVFqdYwiVi0hv0SlpqUA==}
+    dependencies:
+      '@lit-labs/ssr-dom-shim': 1.1.1
+      '@lit/reactive-element': 1.6.3
+      lit-html: 2.8.0
+    dev: true
+
+  /lit-html@2.8.0:
+    resolution: {integrity: sha512-o9t+MQM3P4y7M7yNzqAyjp7z+mQGa4NS4CxiyLqFPyFWyc4O+nodLrkrxSaCTrla6M5YOLaT3RpbbqjszB5g3Q==}
+    dependencies:
+      '@types/trusted-types': 2.0.3
+    dev: true
+
+  /lit@2.8.0:
+    resolution: {integrity: sha512-4Sc3OFX9QHOJaHbmTMk28SYgVxLN3ePDjg7hofEft2zWlehFL3LiAuapWc4U/kYwMYJSh2hTCPZ6/LIC7ii0MA==}
+    dependencies:
+      '@lit/reactive-element': 1.6.3
+      lit-element: 3.3.3
+      lit-html: 2.8.0
+    dev: true
+
   /load-json-file@4.0.0:
     resolution: {integrity: sha512-Kx8hMakjX03tiGTLAIdJ+lL0htKnXjEZN6hk/tozf/WOuYGdZBJrZ+rCJRbVCugsjB3jMLn9746NsQIf5VjBMw==}
     engines: {node: '>=4'}
diff --git a/src/utils.ts b/src/utils.ts
index d95625ca..22bb655f 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -19,10 +19,10 @@ export const excludeRE = [
 export const importAsRE = /^.*\sas\s+/
 export const separatorRE = /[,[\]{}\n]|\bimport\b/g
 
-/**                                                           |       |
- *                    destructing   case&ternary    non-call  |  id   |
- *                         ↓             ↓             ↓      |       |*/
-export const matchRE = /(^|\.\.\.|(?:\bcase|\?)\s+|[^\w_$\/)])([\w_$]+)\s*(?=[.()[\]}:;?+\-*&|`<>,\n]|\b(?:instanceof|in)\b|$)/g
+/**                                                                            |       |
+ *                    destructing   case&ternary    non-call     inheritance   |  id   |
+ *                         ↓             ↓             ↓             ↓         |       |*/
+export const matchRE = /(^|\.\.\.|(?:\bcase|\?)\s+|[^\w_$\/)]|(?:\bextends)\s+)([\w_$]+)\s*(?=[.()[\]}}:;?+\-*&|`<>,\n]|\b(?:instanceof|in)\b|$|(?<=extends\s+\w+)\s+{)/g
 
 const regexRE = /\/[^\s]*?(?<!\\)(?<!\[[^\]]*)\/[gimsuy]*/g
 
diff --git a/test/cases.test.ts b/test/cases.test.ts
index 6d288ea4..73c1e36d 100644
--- a/test/cases.test.ts
+++ b/test/cases.test.ts
@@ -37,6 +37,10 @@ describe('cases', () => {
           }
         ]
       },
+      {
+        from: 'lit',
+        imports: ['LitElement']
+      },
       {
         from: 'three',
         imports: [['*', 'THREE']]
diff --git a/test/cases/positive/extends.output.ts b/test/cases/positive/extends.output.ts
new file mode 100644
index 00000000..ad2b73d6
--- /dev/null
+++ b/test/cases/positive/extends.output.ts
@@ -0,0 +1,2 @@
+import { LitElement } from 'lit';
+class MyElement extends LitElement {}
diff --git a/test/cases/positive/extends.ts b/test/cases/positive/extends.ts
new file mode 100644
index 00000000..3184d236
--- /dev/null
+++ b/test/cases/positive/extends.ts
@@ -0,0 +1 @@
+class MyElement extends LitElement {}