Changes:

1. Fix bug "Request" is not defined
2. Update dependencies to latest versions

package.json

@@ -18,7 +18,7 @@
 		"@babel/plugin-transform-runtime": "^7.4.4",
 		"@babel/preset-env": "^7.4.4",
 		"@types/mocha": "^5.2.6",
-		"@types/node": "^11.13.9",
+		"@types/node": "^12.0.10",
 		"chai": "^4.2.0",
 		"gulp": "^4.0.2",
 		"husky": "^2.2.0",
@@ -29,9 +29,9 @@
 		"prettier": "^1.17.0",
 		"rollup": "^1.10.1",
 		"rollup-plugin-babel": "^4.3.2",
-		"rollup-plugin-commonjs": "^9.3.4",
-		"rollup-plugin-node-resolve": "^4.2.3",
-		"rollup-plugin-terser": "^4.0.4",
+		"rollup-plugin-commonjs": "^10.0.1",
+		"rollup-plugin-node-resolve": "^5.2.0",
+		"rollup-plugin-terser": "^5.0.0",
 		"tslint": "^5.16.0",
 		"tslint-config-prettier": "^1.18.0",
 		"typescript": "^3.4.5",