chore(build): fix typescript build

Author: niieani

package.json

@@ -5,8 +5,8 @@
   "typings": "dist/index.d.ts",
   "scripts": {
     "test": "TS_NODE_FAST=true TS_NODE_NO_PROJECT=true ava",
-    "prepublish": "rimraf dist && tsc -p .",
-    "semantic-release": "semantic-release pre && npm publish --access=public && semantic-release post"
+    "build": "rimraf dist && tsc -p .",
+    "semantic-release": "npm run build && semantic-release pre && npm publish --access=public && semantic-release post"
   },
   "repository": {
     "type": "git",

tsconfig.json

@@ -8,7 +8,8 @@
     "declaration": true,
     "outDir": "dist",
     "rootDir": "src",
-    "sourceMap": true
+    "sourceMap": true,
+    "lib": ["es6"]
   },
   "exclude": [
     "node_modules",