Fixed compilation error

Author: Kevin Groat

package.json

@@ -22,7 +22,7 @@
     "clean": "rimraf dist lib coverage",
     "postclean": "mkdirp dist",
     "compile:browser": "cross-conf-env browserify src/index.ts --standalone td --outfile $npm_package_config_build_file -p tsify -p headerify",
-    "compile:node": "tsc",
+    "compile:node": "tsc --project ./tsconfig.node.json",
     "precompile": "npm run clean",
     "compile": "run-s compile:node compile:browser",
     "cover": "nyc --reporter=lcov --reporter=text-summary --reporter=html npm test",

tsconfig.json

@@ -5,9 +5,7 @@
     "noImplicitAny": false,
     "module": "commonjs",
     "moduleResolution": "node",
-    "outDir": "lib",
-    "declaration": true,
-    "declarationDir": "ts"
+    "outDir": "lib"
   },
   "include": ["src/**/*"],
   "exclude": ["ts/**/*"]

tsconfig.node.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "http://json.schemastore.org/tslint",
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "declaration": true,
+    "declarationDir": "ts"
+  }
+}