diff --git a/package.json b/package.json
index b17b646..bc34213 100644
--- a/package.json
+++ b/package.json
@@ -62,6 +62,7 @@
         "eslint": "^7.27.0",
         "glob": "^7.1.7",
         "husky": ">=6",
+        "less": "^4.1.3",
         "lint-staged": ">=10",
         "mocha": "^8.4.0",
         "prettier": "^2.3.2",
diff --git a/src/CompletionProvider.ts b/src/CompletionProvider.ts
index 842bb81..feb01bf 100644
--- a/src/CompletionProvider.ts
+++ b/src/CompletionProvider.ts
@@ -78,7 +78,7 @@ export class CSSModuleCompletionProvider implements CompletionItemProvider {
       return Promise.resolve([]);
     }
 
-    const classNames = await getAllClassNames(importPath, field);
+    const classNames = await getAllClassNames(importPath, field, document);
 
     return Promise.resolve(
       classNames.map((_class) => {
@@ -88,7 +88,7 @@ export class CSSModuleCompletionProvider implements CompletionItemProvider {
         }
         if (isKebabCaseClassName(name)) {
           return createBracketCompletionItem(name, position);
-        } 
+        }
         return new CompletionItem(name, CompletionItemKind.Variable);
       })
     );
diff --git a/src/test/constant.ts b/src/test/constant.ts
index 0f92d65..c77e8e3 100644
--- a/src/test/constant.ts
+++ b/src/test/constant.ts
@@ -7,3 +7,4 @@ export const SAMPLE_JS_FILE = path.join(FIXTURES_PATH, "sample.jsx");
 export const STYLUS_JS_FILE = path.join(FIXTURES_PATH, "stylus.jsx");
 export const JUMP_PRECISE_DEF_FILE = path.join(FIXTURES_PATH, "jumpDef.jsx");
 export const SPREAD_SYNTAX_FILE = path.join(FIXTURES_PATH, "spread-syntax", "index.js");
+export const LESS_JS_FILE = path.join(FIXTURES_PATH,"less-css.jsx")
diff --git a/src/test/fixtures/less-css.jsx b/src/test/fixtures/less-css.jsx
new file mode 100644
index 0000000..db6448d
--- /dev/null
+++ b/src/test/fixtures/less-css.jsx
@@ -0,0 +1,5 @@
+import styles from "./less-css.less";
+
+console.log(styles['container-header-body']);
+
+styles.container
diff --git a/src/test/fixtures/less-css.less b/src/test/fixtures/less-css.less
new file mode 100644
index 0000000..22e837b
--- /dev/null
+++ b/src/test/fixtures/less-css.less
@@ -0,0 +1,7 @@
+.container {
+    &-header{
+        &-body{}
+    }
+}
+
+// 3 css item
diff --git a/src/test/suite/CompletionProvider.test.ts b/src/test/suite/CompletionProvider.test.ts
index 11ae347..66dcd26 100644
--- a/src/test/suite/CompletionProvider.test.ts
+++ b/src/test/suite/CompletionProvider.test.ts
@@ -3,13 +3,18 @@ import * as vscode from "vscode";
 
 import { CSSModuleCompletionProvider } from "../../CompletionProvider";
 import { CamelCaseValues } from "../../options";
-import { SAMPLE_JS_FILE, STYLUS_JS_FILE } from "../constant";
+import { LESS_JS_FILE, SAMPLE_JS_FILE, STYLUS_JS_FILE } from "../constant";
 import { readOptions } from "../utils";
 
 const uri = vscode.Uri.file(SAMPLE_JS_FILE);
 const uri2 = vscode.Uri.file(STYLUS_JS_FILE);
+const lessUri = vscode.Uri.file(LESS_JS_FILE);
 
-function testCompletion(position: vscode.Position, itemCount: number, fixtureFile?: vscode.Uri) {
+function testCompletion(
+  position: vscode.Position,
+  itemCount: number,
+  fixtureFile?: vscode.Uri
+) {
   return vscode.workspace.openTextDocument(fixtureFile || uri).then((text) => {
     const provider = new CSSModuleCompletionProvider(readOptions());
     return provider.provideCompletionItems(text, position).then((items) => {
@@ -101,7 +106,8 @@ test("test camelCase:false style and kebab-case completion", () => {
   return Promise.resolve(
     testCompletionWithCase(position, false, [
       (items) => assert.strictEqual(1, items.length),
-      (items) => assert.strictEqual(`['sidebar_without-header']`, items[0].insertText),
+      (items) =>
+        assert.strictEqual(`['sidebar_without-header']`, items[0].insertText),
     ])
   ).catch((err) => {
     assert.ok(false, `error in OpenTextDocument ${err}`);
@@ -131,3 +137,10 @@ test("test camelCase:dashes style completion", () => {
     assert.ok(false, `error in OpenTextDocument ${err}`);
   });
 });
+
+// test("test .less extname less completion", () => {
+//   const position = new vscode.Position(5, 7);
+//   return Promise.resolve(testCompletion(position, 3, lessUri)).catch((err) => {
+//     assert.ok(false, `error in OpenTextDocument ${err}`);
+//   });
+// });
diff --git a/src/utils/index.ts b/src/utils/index.ts
index f352505..9327c15 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1,6 +1,15 @@
-import { Position, TextDocument, CompletionItem, CompletionItemKind, TextEdit, Range } from "vscode";
+import {
+  Position,
+  TextDocument,
+  CompletionItem,
+  CompletionItemKind,
+  TextEdit,
+  Range,
+  workspace,
+} from "vscode";
 import * as fse from "fs-extra";
 import * as _ from "lodash";
+import { join } from "path";
 
 export function getCurrentLine(
   document: TextDocument,
@@ -9,23 +18,65 @@ export function getCurrentLine(
   return document.getText(document.lineAt(position).range);
 }
 
+// https://github.com/microsoft/vscode-eslint/blob/main/server/src/eslintServer.ts
+// This makes loading work in a plain NodeJS and a WebPacked environment
+declare const __webpack_require__: typeof require;
+declare const __non_webpack_require__: typeof require;
+export function loadNodeModule<T>(moduleName: string): T | undefined {
+  const r =
+    typeof __webpack_require__ === "function"
+      ? __non_webpack_require__
+      : require;
+  try {
+    return r(moduleName);
+  } catch (err: any) {
+    console.log(err);
+  }
+  return undefined;
+}
+
 /**
  * @TODO Refact by new Tokenizer
  */
-export async function getAllClassNames(filePath: string, keyword: string): Promise<string[]> {
+export async function getAllClassNames(
+  filePath: string,
+  keyword: string,
+  document: TextDocument
+): Promise<string[]> {
   // check file exists, if not just return []
   const filePathStat = await fse.stat(filePath);
   if (!filePathStat.isFile()) {
     return [];
   }
 
-  const content = await fse.readFile(filePath, { encoding: "utf8" });
+  let content = await fse.readFile(filePath, { encoding: "utf8" });
   let matchLineRegexp = /.*[,{]/g;
 
-   // experimental stylus support
-  if (filePath.endsWith(".styl") ||filePath.endsWith(".stylus")) {
-    matchLineRegexp = /\..*/g
+  // experimental stylus support
+  if (filePath.endsWith(".styl") || filePath.endsWith(".stylus")) {
+    matchLineRegexp = /\..*/g;
   }
+
+  if (filePath.endsWith(".less")) {
+    const lessModulePath = join(
+      workspace.getWorkspaceFolder(document.uri).uri.fsPath,
+      "node_modules",
+      "less"
+    );
+    const less = loadNodeModule(lessModulePath) as any;
+    if (less) {
+      // remove all @import
+      content = content.replace(/@import.+;/g, "");
+      // replace all variable to other value
+      content = content.replace(/@.+/g, "unset");
+      try {
+        content = (await less.render(content)).css;
+      } catch (error) {
+        console.log(error);
+      }
+    }
+  }
+
   const lines = content.match(matchLineRegexp);
   if (lines === null) {
     return [];
@@ -36,7 +87,9 @@ export async function getAllClassNames(filePath: string, keyword: string): Promi
     return [];
   }
 
-  const uniqNames = _.uniq(classNames).map((item) => item.slice(1)).filter((item) => !/^[0-9]/.test(item));
+  const uniqNames = _.uniq(classNames)
+    .map((item) => item.slice(1))
+    .filter((item) => !/^[0-9]/.test(item));
   return keyword !== ""
     ? uniqNames.filter((item) => item.indexOf(keyword) !== -1)
     : uniqNames;
@@ -53,19 +106,33 @@ export function dashesCamelCase(str: string): string {
 /**
  * check kebab-case classname
  */
-export function isKebabCaseClassName (className: string): boolean {
-  return className?.includes('-');
+export function isKebabCaseClassName(className: string): boolean {
+  return className?.includes("-");
 }
 
 /**
  * BracketCompletionItem Factory
  */
-export function createBracketCompletionItem (className: string, position: Position): CompletionItem {
-  const completionItem = new CompletionItem(className, CompletionItemKind.Variable);
+export function createBracketCompletionItem(
+  className: string,
+  position: Position
+): CompletionItem {
+  const completionItem = new CompletionItem(
+    className,
+    CompletionItemKind.Variable
+  );
   completionItem.detail = `['${className}']`;
-  completionItem.documentation = "kebab-casing may cause unexpected behavior when trying to access style.class-name as a dot notation. You can still work around kebab-case with bracket notation (eg. style['class-name']) but style.className is cleaner.";
+  completionItem.documentation =
+    "kebab-casing may cause unexpected behavior when trying to access style.class-name as a dot notation. You can still work around kebab-case with bracket notation (eg. style['class-name']) but style.className is cleaner.";
   completionItem.insertText = `['${className}']`;
-  completionItem.additionalTextEdits = [new TextEdit(new Range(new Position(position.line, position.character - 1),
-      new Position(position.line, position.character)), '')];
+  completionItem.additionalTextEdits = [
+    new TextEdit(
+      new Range(
+        new Position(position.line, position.character - 1),
+        new Position(position.line, position.character)
+      ),
+      ""
+    ),
+  ];
   return completionItem;
 }
diff --git a/yarn.lock b/yarn.lock
index 11a0d53..5b526f8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -514,6 +514,13 @@ concat-map@0.0.1:
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
   integrity sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==
 
+copy-anything@^2.0.1:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/copy-anything/-/copy-anything-2.0.6.tgz#092454ea9584a7b7ad5573062b2a87f5900fc480"
+  integrity sha512-1j20GZTsvKNkc4BY3NpMOM8tt///wY3FpIzozTOFO2ffuZcV61nojHXVKIy3WM+7ADCy5FVhdZYHYDdgTU0yJw==
+  dependencies:
+    is-what "^3.14.1"
+
 core-util-is@~1.0.0:
   version "1.0.2"
   resolved "http://registry.npm.taobao.org/core-util-is/download/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@@ -545,6 +552,13 @@ debug@4, debug@4.3.1, debug@^4.0.1, debug@^4.1.1, debug@^4.3.1:
   dependencies:
     ms "2.1.2"
 
+debug@^3.2.6:
+  version "3.2.7"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.7.tgz#72580b7e9145fb39b6676f9c5e5fb100b934179a"
+  integrity sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==
+  dependencies:
+    ms "^2.1.1"
+
 decamelize@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-4.0.0.tgz#aa472d7bf660eb15f3494efd531cab7f2a709837"
@@ -598,6 +612,13 @@ enquirer@^2.3.5, enquirer@^2.3.6:
   dependencies:
     ansi-colors "^4.1.1"
 
+errno@^0.1.1:
+  version "0.1.8"
+  resolved "https://registry.yarnpkg.com/errno/-/errno-0.1.8.tgz#8bb3e9c7d463be4976ff888f76b4809ebc2e811f"
+  integrity sha512-dJ6oBr5SQ1VSd9qkk7ByRgb/1SH4JZjCHSW/mr63/QcXO9zLVxvJ6Oy13nio03rxpSnVDDjFor75SjVeZWPW/A==
+  dependencies:
+    prr "~1.0.1"
+
 error-ex@^1.3.1:
   version "1.3.2"
   resolved "https://registry.npm.taobao.org/error-ex/download/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
@@ -979,6 +1000,13 @@ husky@>=6:
   resolved "https://registry.npm.taobao.org/husky/download/husky-6.0.0.tgz?cache=0&sync_timestamp=1617004245593&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fhusky%2Fdownload%2Fhusky-6.0.0.tgz#810f11869adf51604c32ea577edbc377d7f9319e"
   integrity sha1-gQ8RhprfUWBMMupXftvDd9f5MZ4=
 
+iconv-lite@^0.6.3:
+  version "0.6.3"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.6.3.tgz#a52f80bf38da1952eb5c681790719871a1a72501"
+  integrity sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3.0.0"
+
 ignore@^4.0.6:
   version "4.0.6"
   resolved "https://registry.npm.taobao.org/ignore/download/ignore-4.0.6.tgz?cache=0&sync_timestamp=1590809289115&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fignore%2Fdownload%2Fignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
@@ -989,6 +1017,11 @@ ignore@^5.1.4:
   resolved "https://registry.npm.taobao.org/ignore/download/ignore-5.1.8.tgz?cache=0&sync_timestamp=1590809289115&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fignore%2Fdownload%2Fignore-5.1.8.tgz#f150a8b50a34289b33e22f5889abd4d8016f0e57"
   integrity sha1-8VCotQo0KJsz4i9YiavU2AFvDlc=
 
+image-size@~0.5.0:
+  version "0.5.5"
+  resolved "https://registry.yarnpkg.com/image-size/-/image-size-0.5.5.tgz#09dfd4ab9d20e29eb1c3e80b8990378df9e3cb9c"
+  integrity sha512-6TDAlDPZxUFCv+fuOkIoXT/V/f3Qbq8e37p+YOiYrUv3v9cc3/6x78VdfPgFVaB9dZYeLUfKgHRebpkm/oP2VQ==
+
 import-fresh@^3.0.0, import-fresh@^3.2.1:
   version "3.3.0"
   resolved "https://registry.npm.taobao.org/import-fresh/download/import-fresh-3.3.0.tgz?cache=0&sync_timestamp=1608469579940&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fimport-fresh%2Fdownload%2Fimport-fresh-3.3.0.tgz#37162c25fcb9ebaa2e6e53d5b4d88ce17d9e0c2b"
@@ -1090,6 +1123,11 @@ is-unicode-supported@^0.1.0:
   resolved "https://registry.npm.taobao.org/is-unicode-supported/download/is-unicode-supported-0.1.0.tgz#3f26c76a809593b52bfa2ecb5710ed2779b522a7"
   integrity sha1-PybHaoCVk7Ur+i7LVxDtJ3m1Iqc=
 
+is-what@^3.14.1:
+  version "3.14.1"
+  resolved "https://registry.yarnpkg.com/is-what/-/is-what-3.14.1.tgz#e1222f46ddda85dead0fd1c9df131760e77755c1"
+  integrity sha512-sNxgpk9793nzSs7bA6JQJGeIuRBQhAaNGG77kzYQgMkrID+lS6SlK07K5LaptscDlSaIgH+GPFzf+d75FVxozA==
+
 isarray@~1.0.0:
   version "1.0.0"
   resolved "http://registry.npm.taobao.org/isarray/download/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -1155,6 +1193,23 @@ jsonfile@^6.0.1:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
+less@^4.1.3:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/less/-/less-4.1.3.tgz#175be9ddcbf9b250173e0a00b4d6920a5b770246"
+  integrity sha512-w16Xk/Ta9Hhyei0Gpz9m7VS8F28nieJaL/VyShID7cYvP6IL5oHeL6p4TXSDJqZE/lNv0oJ2pGVjJsRkfwm5FA==
+  dependencies:
+    copy-anything "^2.0.1"
+    parse-node-version "^1.0.1"
+    tslib "^2.3.0"
+  optionalDependencies:
+    errno "^0.1.1"
+    graceful-fs "^4.1.2"
+    image-size "~0.5.0"
+    make-dir "^2.1.0"
+    mime "^1.4.1"
+    needle "^3.1.0"
+    source-map "~0.6.0"
+
 levn@^0.4.1:
   version "0.4.1"
   resolved "https://registry.npm.taobao.org/levn/download/levn-0.4.1.tgz#ae4562c007473b932a6200d403268dd2fffc6ade"
@@ -1266,6 +1321,14 @@ lru-cache@^6.0.0:
   dependencies:
     yallist "^4.0.0"
 
+make-dir@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-2.1.0.tgz#5f0310e18b8be898cc07009295a30ae41e91e6f5"
+  integrity sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==
+  dependencies:
+    pify "^4.0.1"
+    semver "^5.6.0"
+
 merge-stream@^2.0.0:
   version "2.0.0"
   resolved "https://registry.nlark.com/merge-stream/download/merge-stream-2.0.0.tgz#52823629a14dd00c9770fb6ad47dc6310f2c1f60"
@@ -1284,6 +1347,11 @@ micromatch@^4.0.2, micromatch@^4.0.4:
     braces "^3.0.1"
     picomatch "^2.2.3"
 
+mime@^1.4.1:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+  integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
+
 mimic-fn@^2.1.0:
   version "2.1.0"
   resolved "https://registry.nlark.com/mimic-fn/download/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
@@ -1351,7 +1419,7 @@ ms@2.1.2:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
-ms@2.1.3:
+ms@2.1.3, ms@^2.1.1:
   version "2.1.3"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
   integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
@@ -1366,6 +1434,15 @@ natural-compare@^1.4.0:
   resolved "https://registry.npm.taobao.org/natural-compare/download/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
   integrity sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=
 
+needle@^3.1.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/needle/-/needle-3.2.0.tgz#07d240ebcabfd65c76c03afae7f6defe6469df44"
+  integrity sha512-oUvzXnyLiVyVGoianLijF9O/RecZUf7TkBfimjGrLM4eQhXyeJwM6GeAWccwfQ9aa4gMCZKqhAOuLaMIcQxajQ==
+  dependencies:
+    debug "^3.2.6"
+    iconv-lite "^0.6.3"
+    sax "^1.2.4"
+
 normalize-path@^3.0.0, normalize-path@~3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
@@ -1442,6 +1519,11 @@ parse-json@^5.0.0:
     json-parse-even-better-errors "^2.3.0"
     lines-and-columns "^1.1.6"
 
+parse-node-version@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/parse-node-version/-/parse-node-version-1.0.1.tgz#e2b5dbede00e7fa9bc363607f53327e8b073189b"
+  integrity sha512-3YHlOa/JgH6Mnpr05jP9eDG254US9ek25LyIxZlDItp2iJtwyaXQb57lBYLdT3MowkUFYEV2XXNAYIPlESvJlA==
+
 path-exists@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-4.0.0.tgz#513bdbe2d3b95d7762e8c1137efa195c6c61b5b3"
@@ -1472,6 +1554,11 @@ picomatch@^2.2.3:
   resolved "https://registry.nlark.com/picomatch/download/picomatch-2.3.0.tgz?cache=0&sync_timestamp=1621648246651&other_urls=https%3A%2F%2Fregistry.nlark.com%2Fpicomatch%2Fdownload%2Fpicomatch-2.3.0.tgz#f1f061de8f6a4bf022892e2d128234fb98302972"
   integrity sha1-8fBh3o9qS/AiiS4tEoI0+5gwKXI=
 
+pify@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-4.0.1.tgz#4b2cd25c50d598735c50292224fd8c6df41e3231"
+  integrity sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==
+
 please-upgrade-node@^3.2.0:
   version "3.2.0"
   resolved "https://registry.nlark.com/please-upgrade-node/download/please-upgrade-node-3.2.0.tgz#aeddd3f994c933e4ad98b99d9a556efa0e2fe942"
@@ -1499,6 +1586,11 @@ progress@^2.0.0:
   resolved "https://registry.npm.taobao.org/progress/download/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
   integrity sha1-foz42PW48jnBvGi+tOt4Vn1XLvg=
 
+prr@~1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
+  integrity sha512-yPw4Sng1gWghHQWj0B3ZggWUm4qVbPwPFcRG8KyxiU7J2OHFSoEHKS+EZ3fv5l1t9CyCiop6l/ZYeWbrgoQejw==
+
 punycode@^2.1.0:
   version "2.1.1"
   resolved "https://registry.nlark.com/punycode/download/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
@@ -1607,11 +1699,26 @@ safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   resolved "https://registry.npm.taobao.org/safe-buffer/download/safe-buffer-5.1.2.tgz?cache=0&sync_timestamp=1589129103371&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsafe-buffer%2Fdownload%2Fsafe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha1-mR7GnSluAxN0fVm9/St0XDX4go0=
 
+"safer-buffer@>= 2.1.2 < 3.0.0":
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+sax@^1.2.4:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
+  integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
+
 semver-compare@^1.0.0:
   version "1.0.0"
   resolved "https://registry.nlark.com/semver-compare/download/semver-compare-1.0.0.tgz#0dee216a1c941ab37e9efb1788f6afc5ff5537fc"
   integrity sha1-De4hahyUGrN+nvsXiPavxf9VN/w=
 
+semver@^5.6.0:
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
+  integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
+
 semver@^7.2.1, semver@^7.3.5:
   version "7.3.5"
   resolved "https://registry.npm.taobao.org/semver/download/semver-7.3.5.tgz?cache=0&sync_timestamp=1616463603361&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsemver%2Fdownload%2Fsemver-7.3.5.tgz#0b621c879348d8998e4b0e4be94b3f12e6018ef7"
@@ -1671,6 +1778,11 @@ slice-ansi@^4.0.0:
     astral-regex "^2.0.0"
     is-fullwidth-code-point "^3.0.0"
 
+source-map@~0.6.0:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
+
 sprintf-js@~1.0.2:
   version "1.0.3"
   resolved "https://registry.nlark.com/sprintf-js/download/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
@@ -1798,6 +1910,11 @@ tslib@^1.8.1, tslib@^1.9.0:
   resolved "https://registry.npm.taobao.org/tslib/download/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha1-zy04vcNKE0vK8QkcQfZhni9nLQA=
 
+tslib@^2.3.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.5.0.tgz#42bfed86f5787aeb41d031866c8f402429e0fddf"
+  integrity sha512-336iVw3rtn2BUK7ORdIAHTyxHGRIHVReokCR3XjbckJMK7ms8FysBfhLR8IXnAgy7T0PTPNBWKiH514FOW/WSg==
+
 tsutils@^3.21.0:
   version "3.21.0"
   resolved "https://registry.npm.taobao.org/tsutils/download/tsutils-3.21.0.tgz?cache=0&sync_timestamp=1615138205781&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ftsutils%2Fdownload%2Ftsutils-3.21.0.tgz#b48717d394cea6c1e096983eed58e9d61715b623"