diff --git a/src/index.ts b/src/index.ts
index 939371e..323ec4e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -13,12 +13,42 @@ export interface Parser<E> {
 }
 
 export interface ObjectParserRecipe<E> {
-    target: Type<E> | FunctionalParser<E> | string;
+    target: Type<E>;
     nestedTargets?: { [fieldName: string]: ParserRecipe<any> | string };
 }
 
-export type ParserRecipe<E> = ObjectParserRecipe<E> | Type<E> | FunctionalParser<E>;
+export type ParserRecipe<E> = ObjectParserRecipe<E> | FunctionalParser<E>;
 
 export interface RepositoryRecipe {
     [name: string]: ParserRecipe<any>;
-}
\ No newline at end of file
+}
+
+
+/**
+ * @todo common-lang
+ */
+export const isAnounymous = (obj: any) => {
+    return obj.name == "";
+}
+
+const reduceToObject = (acc, [k, v]) => Object.assign(acc, { [k as string]: v });
+
+const transformValue = it => ([k, v]) => ([k, it(v)]);
+
+const setAtObject = obj => ([k, v]) => obj[k] = v;
+
+export const Mappers = {
+    Value: transformValue
+}
+
+export const Reducers = {
+    Object: reduceToObject
+}
+
+export const Iter = {
+    SetAt: setAtObject
+}
+
+/**
+ * ------------
+ */
\ No newline at end of file
diff --git a/src/parser.ts b/src/parser.ts
index 91719bd..005cdff 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -1,29 +1,7 @@
-import { Type, FunctionalParser, ParserRecipe, ObjectParserRecipe, Parser } from "./";
+import { Type, FunctionalParser, ParserRecipe, ObjectParserRecipe, Parser, Reducers } from "./";
 import { ParserRepository } from "./repository";
 import { noop, getattr } from "@huehuejs/common-lang";
-
-/**
- * @todo common-lang
- */
-const isAnounymous = (obj: any) => {
-    return obj.name == "";
-}
-
-const reduceToObject = (acc, [k, v]) => Object.assign(acc, { [k as string]: v });
-
-const transformValue = it => ([k, v]) => ([k, it(v)]);
-
-const Mappers = {
-    Value: transformValue
-}
-
-const Reducers = {
-    Object: reduceToObject
-}
-
-/**
- * ------------
- */
+import { Mappers } from "."
 
 class RefParser implements Parser<any>{
 
@@ -88,17 +66,14 @@ export function makeFromString(name: string): FunctionalParser<any> {
 
 export function makeFromObjectRecipe<E>(parserRecipe: ObjectParserRecipe<E>): FunctionalParser<E> {
     return new ObjectParser(
-        makeFromRecipe(parserRecipe.target),
-        Object.entries(parserRecipe.nestedTargets)
+        makeFromType(parserRecipe.target),
+        Object.entries(parserRecipe.nestedTargets || {})
             .map(Mappers.Value(makeFromRecipe))
             .reduce(Reducers.Object, {})
     ).asFunctionalParser()
 }
 
 export function makeFromRecipe<E>(parserRecipe: ParserRecipe<E> | string): FunctionalParser<E> {
-    if (!isAnounymous(parserRecipe) && typeof parserRecipe == "function") {
-        return makeFromType(parserRecipe as Type<E>);
-    }
     if (typeof parserRecipe == "function") {
         return parserRecipe as FunctionalParser<E>;
     }
diff --git a/src/repository.ts b/src/repository.ts
index 77adb3b..1713ef1 100644
--- a/src/repository.ts
+++ b/src/repository.ts
@@ -1,5 +1,6 @@
-import { FunctionalParser, Type } from "."
+import { FunctionalParser, ParserRecipe, RepositoryRecipe, Mappers, Iter, Type } from "."
 import { noop, getattr } from "@huehuejs/common-lang";
+import { makeFromRecipe, makeFromType } from "./parser";
 
 
 export interface ParserRepository {
@@ -40,11 +41,28 @@ export class ParserRepositoryBuilder {
 
     }
 
-    add(name: string, parser: FunctionalParser<any>): ParserRepositoryBuilder {
+    addParser(name: string, parser: FunctionalParser<any>): ParserRepositoryBuilder {
         this.repository[name] = parser;
         return this;
     }
 
+    addType(type: Type<any>) {
+        this.repository[type.name] = makeFromType(type);
+        return this;
+    }
+
+    addRecipe(repositoryRecipe: RepositoryRecipe): ParserRepositoryBuilder {
+        Object.entries(repositoryRecipe)
+            .map(Mappers.Value(makeFromRecipe))
+            .forEach(Iter.SetAt(this.repository));
+        return this;
+    }
+
+    addParserRecipe(name: string, recipe: ParserRecipe<any>): ParserRepositoryBuilder {
+        const parser = makeFromRecipe(recipe);
+        return this.addParser(name, parser);
+    }
+
     build(): ParserRepository {
         return asSelfFeederRepostiory(this.repository);
     }
diff --git a/test/swapi.spec.ts b/test/swapi.spec.ts
index c2a1a37..8ba5962 100644
--- a/test/swapi.spec.ts
+++ b/test/swapi.spec.ts
@@ -1,5 +1,49 @@
 import { makeFromRecipe, makeFromFunction } from "../src/parser";
 import { expect } from "chai";
+import { ParserRepositoryBuilder } from "../src/repository";
+import { RepositoryRecipe, Parser, FunctionalParser } from "../src";
+
+
+
+export class Planet {
+    name: string//"Tatooine"
+    rotationPeriod: number//"23"
+    orbitalPeriod: number//"304"
+    diameter: number//"10465"
+    climate: string//"arid"
+    gravity: string//"1 standard"
+    terrain: string//"desert"
+    surfaceWater: number//"1"
+    population: number//"200000"
+    residents: Array<string>
+    films: Array<string>
+    created: Date//"2014-12-09T13:50:49.641000Z"
+    edited: Date//"2014-12-21T20:48:04.175778Z"
+    url: string//"https://swapi.co/api/planets/1/"
+}
+
+const recipe: RepositoryRecipe = {
+    stringToNumber: makeFromFunction((it: string) => parseInt(it)),
+    stringToDate: makeFromFunction((it: string) => new Date(it)),
+    Planet: {
+        target: Planet,
+        nestedTargets: {
+            rotationPeriod: 'stringToNumber',
+            orbitalPeriod: 'stringToNumber',
+            diameter: 'stringToNumber',
+            surfaceWater: 'stringToNumber',
+            population: 'stringToNumber',
+            created: 'stringToDate',
+            edited: 'stringToDate',
+        }
+    }
+}
+
+const repositoryBuilder = new ParserRepositoryBuilder();
+const repository = repositoryBuilder
+    .addRecipe(recipe)
+    .build();
+
 
 const rawPlanet = {
     name: 'Tatooine',
@@ -36,38 +80,10 @@ const rawPlanet = {
 };
 
 
-export class Planet {
-    name: string//"Tatooine"
-    rotationPeriod: number//"23"
-    orbitalPeriod: number//"304"
-    diameter: number//"10465"
-    climate: string//"arid"
-    gravity: string//"1 standard"
-    terrain: string//"desert"
-    surfaceWater: number//"1"
-    population: number//"200000"
-    residents: Array<string>
-    films: Array<string>
-    created: Date//"2014-12-09T13:50:49.641000Z"
-    edited: Date//"2014-12-21T20:48:04.175778Z"
-    url: string//"https://swapi.co/api/planets/1/"
-}
-
-const planetParser = makeFromRecipe({
-    target: Planet,
-    nestedTargets: {
-        rotationPeriod: makeFromFunction((it: string) => parseInt(it)),
-        orbitalPeriod: makeFromFunction((it: string) => parseInt(it)),
-        diameter: makeFromFunction((it: string) => parseInt(it)),
-        surfaceWater: makeFromFunction((it: string) => parseInt(it)),
-        population: makeFromFunction((it: string) => parseInt(it)),
-        created: makeFromFunction((it: string) => new Date(it)),
-        edited: makeFromFunction((it: string) => new Date(it)),
-    }
-})
-
 describe("Swapi", () => {
     it("Get Planet", () => {
+        const planetParser = repository[Planet.name] as FunctionalParser<Planet>;
+        console.log(planetParser);
         const planet = planetParser(rawPlanet)
         expect(planet).to.instanceof(Planet)
         expect(typeof planet.name).to.equals("string")
diff --git a/test/xparser.spec.ts b/test/xparser.spec.ts
index 50d080c..9c7219e 100644
--- a/test/xparser.spec.ts
+++ b/test/xparser.spec.ts
@@ -102,7 +102,7 @@ describe('XParser', () => {
 
     describe("#makeFromRecipe", () => {
         it('should work with only a type', () => {
-            const justAType: ParserRecipe<Math> = Math;
+            const justAType: ParserRecipe<Math> = { target: Math };
             const rawData = rawMathData();
             const parser = makeFromRecipe(justAType);
             const mathData = parser(rawData);
@@ -126,8 +126,8 @@ describe('XParser', () => {
         const rationalParser = makeFromRecipe(rationalParserRecipe);
         const repositoryBuilder = new ParserRepositoryBuilder();
         const repository = repositoryBuilder
-            .add("Rational", rationalParser)
-            .add("number|Rational", numberOrRationalParser)
+            .addParser("Rational", rationalParser)
+            .addParser("number|Rational", numberOrRationalParser)
             .build();
         it('should work with a complex type', () => {
             const rawData = {