diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index d521d08..0000000
--- a/package-lock.json
+++ /dev/null
@@ -1,1785 +0,0 @@
-{
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diff --git a/package.json b/package.json
index 2a11507..f5782f3 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
 		"test": "mocha",
 		"clean": "del-cli ./dist/",
 		"ts:cjs": "tsc -m commonjs",
-		"ts:umd": "tsc -t es5 -m umd --outDir ./dist/umd/",
+		"ts:umd": "tsc -t es5 -m umd -d false --outDir ./dist/umd/",
 		"build": "npm run clean && npm run ts:cjs && npm run ts:umd",
 		"dev": "tsc -w",
 		"pretest": "tsc -m commonjs"
@@ -58,4 +58,4 @@
 		"url": "https://github.com/taoqf/node-fast-html-parser/issues"
 	},
 	"homepage": "https://github.com/taoqf/node-fast-html-parser"
-}
+}
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index e6129b1..6a493bf 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,7 +4,7 @@
 	],
 	"compilerOptions": {
 		"module": "commonjs",
-		"target": "esnext",
+		"target": "es5",
 		"noImplicitAny": true,
 		"sourceMap": false,
 		"emitDecoratorMetadata": true,