diff --git a/README.md b/README.md
index 6c50d04..69f625a 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,9 @@ completely ignores
 
 # prerequisites
 
-NodeJS
+NodeJS or Deno
+
+### in NodeJS
 
 # similar projects in other languages 
 
diff --git a/cli/deno.ts b/cli/deno.ts
new file mode 100644
index 0000000..14ca1ed
--- /dev/null
+++ b/cli/deno.ts
@@ -0,0 +1,5 @@
+import { parse } from "../src/class-parser.ts"
+
+const stdin = new TextDecoder().decode(await Deno.readAll(Deno.stdin));
+
+Deno.stdout.write(new TextEncoder().encode(JSON.stringify(parse(stdin))))
diff --git a/cli/node.js b/cli/node.js
new file mode 100644
index 0000000..3e0b58b
--- /dev/null
+++ b/cli/node.js
@@ -0,0 +1,6 @@
+const fs = require('fs');
+const parse = require('../dist/class-parser.js').parse;
+
+const data = fs.readFileSync(process.stdin.fd, 'utf-8');
+
+process.stdout.write(JSON.stringify(parse(data)))
diff --git a/package.json b/package.json
index d456b40..04e807c 100644
--- a/package.json
+++ b/package.json
@@ -10,9 +10,11 @@
   ],
   "author": "Moritz Schmidt <fusselwurm@gmail.com>",
   "files": [
+    "cli/*.*",
     "dist/*.js",
     "dist/*.d.ts",
-    "dist/*.map.js"
+    "dist/*.map.js",
+    "src/class-parser.ts"
   ],
   "main": "dist/class-parser",
   "dependencies": {},
@@ -32,9 +34,10 @@
   },
   "scripts": {
     "test": "tsc && jest --config jestconfig.json",
-    "build:amd": "tsc --module amd --outFile dist/class-parser.amd.js",
+    "build:amd": "tsc --module amd --moduleResolution node --outFile dist/class-parser.amd.js",
     "build:web": "tsc && webpack -p && rm -r docs/dist",
-    "build": "tsc"
+    "build": "tsc",
+    "build:release": "npm run build:web && npm run build:amd"
   },
   "jest": {
     "verbose": true,
diff --git a/src/class-parser.ts b/src/class-parser.ts
index b57e6b8..548baf3 100644
--- a/src/class-parser.ts
+++ b/src/class-parser.ts
@@ -19,7 +19,7 @@ export interface Options {
     }
 }
 
-export const parse = function (raw: string, options?: Options): any {
+export const parse = function (raw: string, options: Options = {}): object {
     let currentPosition: number = 0;
     let current = function (): string {
         return raw[currentPosition] || '';
@@ -33,7 +33,7 @@ export const parse = function (raw: string, options?: Options): any {
         return string;
     };
     let indexOfOrMaxInt = function (str: string, fromPos: number) {
-        const pos = this.indexOf(str, fromPos);
+        const pos = raw.indexOf(str, fromPos);
         return pos === -1 ? Infinity : pos;
     };
     let parseArray = function (): any[] {
@@ -55,7 +55,7 @@ export const parse = function (raw: string, options?: Options): any {
         next();
         return result;
     };
-    let parseProperty = function (context): any {
+    let parseProperty = function (context: { [index:string]: any }): any {
         let name = parsePropertyName(),
             value;
 
@@ -172,7 +172,7 @@ export const parse = function (raw: string, options?: Options): any {
             return raw.substr(currentPosition, 6).indexOf('" \\n "') === 0;
         },
         forwardToNextQuote = function(): void {
-            currentPosition = indexOfOrMaxInt.call(raw, chars.QUOTE, currentPosition + 1);
+            currentPosition = indexOfOrMaxInt(chars.QUOTE, currentPosition + 1);
         },
         parseString = function(): any {
             let result = '';
@@ -230,9 +230,9 @@ export const parse = function (raw: string, options?: Options): any {
         },
         parseMathExpression = function() {
             const posOfExpressionEnd = Math.min(
-                indexOfOrMaxInt.call(raw, chars.SEMICOLON, currentPosition),
-                indexOfOrMaxInt.call(raw, chars.CURLY_CLOSE, currentPosition),
-                indexOfOrMaxInt.call(raw, chars.COMMA, currentPosition)
+                indexOfOrMaxInt(chars.SEMICOLON, currentPosition),
+                indexOfOrMaxInt(chars.CURLY_CLOSE, currentPosition),
+                indexOfOrMaxInt(chars.COMMA, currentPosition)
             );
             const expression = raw.substr(currentPosition, posOfExpressionEnd - currentPosition);
             assert(posOfExpressionEnd !== Infinity);
@@ -254,7 +254,7 @@ export const parse = function (raw: string, options?: Options): any {
             }
             return result;
         },
-        isValidVarnameChar = function(char): boolean {
+        isValidVarnameChar = function(char: string): boolean {
             return (char >= '0' && char <= '9') ||
                 (char >= 'A' && char <= 'Z') ||
                 (char >= 'a' && char <= 'z') ||
@@ -285,8 +285,6 @@ export const parse = function (raw: string, options?: Options): any {
             return result;
         };
 
-    options = options || {};
-
     if (typeof raw !== 'string') {
         throw new TypeError('expecting string!');
     }