diff --git a/dist/world/biome/index.d.ts b/dist/biome/index.d.ts
similarity index 100%
rename from dist/world/biome/index.d.ts
rename to dist/biome/index.d.ts
diff --git a/dist/world/biome/types.d.ts b/dist/biome/types.d.ts
similarity index 100%
rename from dist/world/biome/types.d.ts
rename to dist/biome/types.d.ts
diff --git a/dist/generator/index.d.ts b/dist/generator/index.d.ts
index c43bf62..855a14a 100644
--- a/dist/generator/index.d.ts
+++ b/dist/generator/index.d.ts
@@ -1,8 +1,8 @@
 import type { WorldGenerationParams } from "./types";
 import { World } from "../world";
-import { WorldBiome } from "../world/biome";
+import { WorldBiome } from "../biome";
 import type { WorldConfig } from "../world/types";
-import type { WorldBiomeConfig } from "../world/biome/types";
+import type { WorldBiomeConfig } from "../biome/types";
 export declare class WorldGenerator<T extends object> {
     readonly config: WorldConfig;
     private biomes;
diff --git a/dist/index.d.ts b/dist/index.d.ts
index 7bbc175..69aff4a 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -1,8 +1,7 @@
-export * from './generator';
-export * from './generator/types';
-export * from './world';
-export * from './world/types';
-export * from './world/biome';
-export * from './world/biome/types';
-export * from './utils/perlin';
-export * from './utils/seed';
+export { WorldGenerator } from "./generator";
+export { World } from "./world";
+export { WorldBiome } from "./biome";
+import type { WorldConfig, WorldPoint } from "./world/types";
+import type { WorldGenerationParams } from "./generator/types";
+import type { WorldBiomeConfig } from "./biome/types";
+export type { WorldConfig, WorldPoint, WorldGenerationParams, WorldBiomeConfig, };
diff --git a/dist/index.js b/dist/index.js
index a0fa8e3..4223dac 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1 +1 @@
-(()=>{"use strict";var e={997:(e,t,o)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.WorldGenerator=void 0;const i=o(871),r=o(9),n=o(128),s=o(6);t.WorldGenerator=class{constructor(e){this.biomes=[],this.config=e}addBiome(e,t){const o=new s.WorldBiome(e,t);return this.biomes.push(o),o}clearBiomes(){this.biomes=[]}getBiomes(){return this.biomes}peakBiome(e){var t;return null!==(t=this.getBiomes().find((t=>e>=t.lowerBound&&e<=t.upperBound)))&&void 0!==t?t:null}generate(e){var t,o,s;const l=null!==(t=null==e?void 0:e.seed)&&void 0!==t?t:r.Seed.generate(null==e?void 0:e.seedSize),a=[];for(let t=0;t<this.config.height;t++){a[t]=[];for(let r=0;r<this.config.width;r++){const n=i.Perlin.generate({config:this.config,seed:l,x:r+(null!==(o=null==e?void 0:e.offsetX)&&void 0!==o?o:0),y:t+(null!==(s=null==e?void 0:e.offsetY)&&void 0!==s?s:0)}),h=this.peakBiome(n);h&&(a[t][r]=h.data)}}return new n.World(a,l)}}},147:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0})},465:function(e,t,o){var i=this&&this.__createBinding||(Object.create?function(e,t,o,i){void 0===i&&(i=o);var r=Object.getOwnPropertyDescriptor(t,o);r&&!("get"in r?!t.__esModule:r.writable||r.configurable)||(r={enumerable:!0,get:function(){return t[o]}}),Object.defineProperty(e,i,r)}:function(e,t,o,i){void 0===i&&(i=o),e[i]=t[o]}),r=this&&this.__exportStar||function(e,t){for(var o in e)"default"===o||Object.prototype.hasOwnProperty.call(t,o)||i(t,e,o)};Object.defineProperty(t,"__esModule",{value:!0}),r(o(997),t),r(o(147),t),r(o(128),t),r(o(383),t),r(o(6),t),r(o(346),t),r(o(871),t),r(o(9),t)},708:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.PERLIN_AVG_POWER=t.PERLIN_AMP_FALLOFF=t.PERLIN_ZWRAP=t.PERLIN_ZWRAPB=t.PERLIN_YWRAP=t.PERLIN_YWRAPB=void 0,t.PERLIN_YWRAPB=4,t.PERLIN_YWRAP=1<<t.PERLIN_YWRAPB,t.PERLIN_ZWRAPB=8,t.PERLIN_ZWRAP=1<<t.PERLIN_ZWRAPB,t.PERLIN_AMP_FALLOFF=.5,t.PERLIN_AVG_POWER=1.1},871:(e,t,o)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.Perlin=void 0;const i=o(708);t.Perlin=class{static generate({x:e,y:t,seed:o,config:r}){const{frequencyChange:n,borderSmoothness:s,heightAveraging:l,heightRedistribution:a,falloff:h}=this.normalizeConfig(r),d=o.length-1,u=e/r.width*n,c=t/r.height*n;let f=Math.floor(u),P=Math.floor(c),_=u-f,g=c-P,v=0,p=.5;for(let e=0;e<s;e++){let e=f+(P<<i.PERLIN_YWRAPB);const t=this.scaledCosine(_),r=this.scaledCosine(g);let n=o[e&d];n+=t*(o[e+1&d]-n);let s=o[e+i.PERLIN_YWRAP&d];s+=t*(o[e+i.PERLIN_YWRAP+1&d]-s),n+=r*(s-n),v+=n*p,p*=i.PERLIN_AMP_FALLOFF,e+=i.PERLIN_ZWRAP,f<<=1,_*=2,_>=1&&(f++,_--),P<<=1,g*=2,g>=1&&(P++,g--)}return l&&(v>.5?v=Math.pow(v,(1.5-v)/i.PERLIN_AVG_POWER):v<.5&&(v=Math.pow(v,(1.5-v)*i.PERLIN_AVG_POWER))),v=Math.pow(v,a),h>0&&(v*=this.heightFalloff(e,r.width,h)*this.heightFalloff(t,r.height,h)),v}static clamp(e,t,o=[0,1]){return Math.max(o[0],Math.min(o[1],null!=e?e:t))}static scaledCosine(e){return.5*(1-Math.cos(e*Math.PI))}static smootherStep(e){return 3*Math.pow(e,2)-2*Math.pow(e,3)}static heightFalloff(e,t,o){const i=t/2,r=Math.abs(i-e),n=i*(1-o);if(r<n)return 1;let s=(r-n)/i/(1-n/i);return s=Math.min(1,Math.max(0,s)),1-this.smootherStep(s)}static normalizeConfig(e){var t;return{frequencyChange:Math.round(31*this.clamp(e.frequencyChange,.3)+1),borderSmoothness:Math.round(14*(1-this.clamp(e.borderSmoothness,.5))+1),heightRedistribution:2-this.clamp(e.heightRedistribution,1,[.5,1.5]),falloff:this.clamp(e.falloff,0,[0,.9]),heightAveraging:null===(t=e.heightAveraging)||void 0===t||t}}}},9:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.Seed=void 0,t.Seed=class{static generate(e=512){const t=[];for(let o=0;o<e;o++)t.push(Math.random());return t}}},6:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.WorldBiome=void 0,t.WorldBiome=class{constructor(e,t){var o,i;this.lowerBound=Math.max(0,null!==(o=e.lowerBound)&&void 0!==o?o:0),this.upperBound=Math.min(1,null!==(i=e.upperBound)&&void 0!==i?i:1),this.data=t}}},346:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0})},128:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.World=void 0,t.World=class{constructor(e,t){this.matrix=[],this.width=e[0].length,this.height=e.length,this.matrix=e,this.seed=t}getMatrix(){return this.matrix}each(e){for(let t=0;t<this.height;t++)for(let o=0;o<this.width;o++)if(!1===e({x:o,y:t},this.matrix[t][o]))return}getAt(e){var t,o;return null!==(o=null===(t=this.matrix[e.y])||void 0===t?void 0:t[e.x])&&void 0!==o?o:null}replaceAt(e,t){this.matrix[e.y][e.x]=t}}},383:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0})}},t={},o=function o(i){var r=t[i];if(void 0!==r)return r.exports;var n=t[i]={exports:{}};return e[i].call(n.exports,n,n.exports,o),n.exports}(465);module.exports=o})();
\ No newline at end of file
+(()=>{"use strict";var e={408:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.WorldBiome=void 0,t.WorldBiome=class{constructor(e,t){var r,o;this.lowerBound=Math.max(0,null!==(r=e.lowerBound)&&void 0!==r?r:0),this.upperBound=Math.min(1,null!==(o=e.upperBound)&&void 0!==o?o:1),this.data=t}}},997:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.WorldGenerator=void 0;const o=r(871),i=r(9),n=r(128),l=r(408);t.WorldGenerator=class{constructor(e){this.biomes=[],this.config=e}addBiome(e,t){const r=new l.WorldBiome(e,t);return this.biomes.push(r),r}clearBiomes(){this.biomes=[]}getBiomes(){return this.biomes}peakBiome(e){var t;return null!==(t=this.getBiomes().find((t=>e>=t.lowerBound&&e<=t.upperBound)))&&void 0!==t?t:null}generate(e){var t,r,l;const s=null!==(t=null==e?void 0:e.seed)&&void 0!==t?t:i.Seed.generate(null==e?void 0:e.seedSize),a=[];for(let t=0;t<this.config.height;t++){a[t]=[];for(let i=0;i<this.config.width;i++){const n=o.Perlin.generate({config:this.config,seed:s,x:i+(null!==(r=null==e?void 0:e.offsetX)&&void 0!==r?r:0),y:t+(null!==(l=null==e?void 0:e.offsetY)&&void 0!==l?l:0)}),h=this.peakBiome(n);h&&(a[t][i]=h.data)}}return new n.World(a,s)}}},708:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.PERLIN_AVG_POWER=t.PERLIN_AMP_FALLOFF=t.PERLIN_ZWRAP=t.PERLIN_ZWRAPB=t.PERLIN_YWRAP=t.PERLIN_YWRAPB=void 0,t.PERLIN_YWRAPB=4,t.PERLIN_YWRAP=1<<t.PERLIN_YWRAPB,t.PERLIN_ZWRAPB=8,t.PERLIN_ZWRAP=1<<t.PERLIN_ZWRAPB,t.PERLIN_AMP_FALLOFF=.5,t.PERLIN_AVG_POWER=1.1},871:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.Perlin=void 0;const o=r(708);t.Perlin=class{static generate({x:e,y:t,seed:r,config:i}){const{frequencyChange:n,borderSmoothness:l,heightAveraging:s,heightRedistribution:a,falloff:h}=this.normalizeConfig(i),d=r.length-1,u=e/i.width*n,c=t/i.height*n;let f=Math.floor(u),P=Math.floor(c),g=u-f,m=c-P,v=0,R=.5;for(let e=0;e<l;e++){let e=f+(P<<o.PERLIN_YWRAPB);const t=this.scaledCosine(g),i=this.scaledCosine(m);let n=r[e&d];n+=t*(r[e+1&d]-n);let l=r[e+o.PERLIN_YWRAP&d];l+=t*(r[e+o.PERLIN_YWRAP+1&d]-l),n+=i*(l-n),v+=n*R,R*=o.PERLIN_AMP_FALLOFF,e+=o.PERLIN_ZWRAP,f<<=1,g*=2,g>=1&&(f++,g--),P<<=1,m*=2,m>=1&&(P++,m--)}return s&&(v>.5?v=Math.pow(v,(1.5-v)/o.PERLIN_AVG_POWER):v<.5&&(v=Math.pow(v,(1.5-v)*o.PERLIN_AVG_POWER))),v=Math.pow(v,a),h>0&&(v*=this.heightFalloff(e,i.width,h)*this.heightFalloff(t,i.height,h)),v}static clamp(e,t,r=[0,1]){return Math.max(r[0],Math.min(r[1],null!=e?e:t))}static scaledCosine(e){return.5*(1-Math.cos(e*Math.PI))}static smootherStep(e){return 3*Math.pow(e,2)-2*Math.pow(e,3)}static heightFalloff(e,t,r){const o=t/2,i=Math.abs(o-e),n=o*(1-r);if(i<n)return 1;let l=(i-n)/o/(1-n/o);return l=Math.min(1,Math.max(0,l)),1-this.smootherStep(l)}static normalizeConfig(e){var t;return{frequencyChange:Math.round(31*this.clamp(e.frequencyChange,.3)+1),borderSmoothness:Math.round(14*(1-this.clamp(e.borderSmoothness,.5))+1),heightRedistribution:2-this.clamp(e.heightRedistribution,1,[.5,1.5]),falloff:this.clamp(e.falloff,0,[0,.9]),heightAveraging:null===(t=e.heightAveraging)||void 0===t||t}}}},9:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.Seed=void 0,t.Seed=class{static generate(e=512){const t=[];for(let r=0;r<e;r++)t.push(Math.random());return t}}},128:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.World=void 0,t.World=class{constructor(e,t){this.matrix=[],this.width=e[0].length,this.height=e.length,this.matrix=e,this.seed=t}getMatrix(){return this.matrix}each(e){for(let t=0;t<this.height;t++)for(let r=0;r<this.width;r++)if(!1===e({x:r,y:t},this.matrix[t][r]))return}getAt(e){var t,r;return null!==(r=null===(t=this.matrix[e.y])||void 0===t?void 0:t[e.x])&&void 0!==r?r:null}replaceAt(e,t){this.matrix[e.y][e.x]=t}}}},t={};function r(o){var i=t[o];if(void 0!==i)return i.exports;var n=t[o]={exports:{}};return e[o](n,n.exports,r),n.exports}var o={};(()=>{var e=o;Object.defineProperty(e,"__esModule",{value:!0}),e.WorldBiome=e.World=e.WorldGenerator=void 0;var t=r(997);Object.defineProperty(e,"WorldGenerator",{enumerable:!0,get:function(){return t.WorldGenerator}});var i=r(128);Object.defineProperty(e,"World",{enumerable:!0,get:function(){return i.World}});var n=r(408);Object.defineProperty(e,"WorldBiome",{enumerable:!0,get:function(){return n.WorldBiome}})})(),module.exports=o})();
\ No newline at end of file
diff --git a/dist/types.d.ts b/dist/types.d.ts
deleted file mode 100644
index 33b2a96..0000000
--- a/dist/types.d.ts
+++ /dev/null
@@ -1,64 +0,0 @@
-export type WorldParams = {
-    width: number;
-    height: number;
-};
-export type WorldLayerParams = {
-    /**
-     * Frequency of biomes change
-     * Default: 0.3
-     * Min: 0.0, Max: 1.0
-     */
-    frequencyChange?: number;
-    /**
-     * Smoothness of biomes borders
-     * Default: 0.5
-     * Min: 0.0, Max: 1.0
-     */
-    borderSmoothness?: number;
-    /**
-     * Redistribution of biomes height
-     * Default: 1.0
-     * Min: 0.5, Max: 1.5
-     */
-    heightRedistribution?: number;
-    /**
-     * Averaging of biomes height
-     * Default: true
-     */
-    heightAveraging?: boolean;
-    /**
-     * Scale of falloff area
-     * Default: 0.0
-     */
-    falloff?: number;
-};
-export type WorldBiomeParams = {
-    /**
-     * Lower biome bound
-     * Default: 0.0
-     * Min: 0.0
-     */
-    lowerBound?: number;
-    /**
-     * Upper biome bound
-     * Default: 1.0
-     * Max: 1.0
-     */
-    upperBound?: number;
-};
-export type WorldGenerationParams = {
-    /**
-     * Generation seed
-     * Default: Autogenerate
-     */
-    seed?: number[];
-    /**
-     * Size of seed array
-     * Default: 512
-     */
-    seedSize?: number;
-};
-export type WorldBiomePosition = {
-    x: number;
-    y: number;
-};
diff --git a/dist/utils/clamp.d.ts b/dist/utils/clamp.d.ts
deleted file mode 100644
index 4bd87ef..0000000
--- a/dist/utils/clamp.d.ts
+++ /dev/null
@@ -1 +0,0 @@
-export declare function clamp(value: number | undefined, defaultValue: number, limit?: [number, number]): number;
diff --git a/dist/utils/perlin.d.ts b/dist/utils/perlin.d.ts
deleted file mode 100644
index 7b74573..0000000
--- a/dist/utils/perlin.d.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import { WorldLayerParams } from '../types';
-type NoiseParameters = {
-    seed: number[];
-    x: number;
-    y: number;
-    width: number;
-    height: number;
-    params: WorldLayerParams;
-};
-export declare function generateNoise(parameters: NoiseParameters): number;
-export {};
diff --git a/dist/utils/perlin/index.d.ts b/dist/utils/perlin/index.d.ts
index 3000cdb..cb0ff5c 100644
--- a/dist/utils/perlin/index.d.ts
+++ b/dist/utils/perlin/index.d.ts
@@ -1,9 +1 @@
-import type { PerlinParameters } from "./types";
-export declare class Perlin {
-    static generate({ x, y, seed, config }: PerlinParameters): number;
-    private static clamp;
-    private static scaledCosine;
-    private static smootherStep;
-    private static heightFalloff;
-    private static normalizeConfig;
-}
+export {};
diff --git a/dist/utils/perlin/types.d.ts b/dist/utils/perlin/types.d.ts
index 248a45c..cb0ff5c 100644
--- a/dist/utils/perlin/types.d.ts
+++ b/dist/utils/perlin/types.d.ts
@@ -1,7 +1 @@
-import type { WorldConfig } from "../../world/types";
-export type PerlinParameters = {
-    seed: number[];
-    config: WorldConfig;
-    x: number;
-    y: number;
-};
+export {};
diff --git a/dist/utils/seed.d.ts b/dist/utils/seed.d.ts
deleted file mode 100644
index fbb9a33..0000000
--- a/dist/utils/seed.d.ts
+++ /dev/null
@@ -1 +0,0 @@
-export declare function generateSeed(size?: number): number[];
diff --git a/dist/utils/seed/index.d.ts b/dist/utils/seed/index.d.ts
index 4f59f1e..cb0ff5c 100644
--- a/dist/utils/seed/index.d.ts
+++ b/dist/utils/seed/index.d.ts
@@ -1,3 +1 @@
-export declare class Seed {
-    static generate(size?: number): number[];
-}
+export {};
diff --git a/dist/world-biome.d.ts b/dist/world-biome.d.ts
deleted file mode 100644
index b31fee1..0000000
--- a/dist/world-biome.d.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import { WorldBiomeParams } from './types';
-export declare class WorldBiome<T> {
-    readonly lowerBound: number;
-    readonly upperBound: number;
-    readonly data: T;
-    constructor(params: WorldBiomeParams, data: T);
-}
diff --git a/dist/world-generator.d.ts b/dist/world-generator.d.ts
deleted file mode 100644
index 9a4ecf0..0000000
--- a/dist/world-generator.d.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-import { WorldGenerationParams, WorldLayerParams, WorldParams } from './types';
-import { World } from './world';
-import { WorldLayer } from './world-layer';
-export declare class WorldGenerator<T = any> {
-    readonly width: number;
-    readonly height: number;
-    private layers;
-    constructor(params: WorldParams);
-    addLayer(params?: WorldLayerParams): WorldLayer<T>;
-    clearLayers(): void;
-    getLayers(): WorldLayer<T>[];
-    generate(params?: WorldGenerationParams): World<T>;
-    private generateLayer;
-}
diff --git a/dist/world-layer.d.ts b/dist/world-layer.d.ts
deleted file mode 100644
index b0a598a..0000000
--- a/dist/world-layer.d.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import { WorldBiomeParams, WorldLayerParams } from './types';
-import { WorldBiome } from './world-biome';
-export declare class WorldLayer<T> {
-    readonly params: WorldLayerParams;
-    private biomes;
-    constructor(params?: WorldLayerParams);
-    addBiome(params: WorldBiomeParams, data: T): WorldBiome<T>;
-    clearBiomes(): void;
-    getBiomes(): WorldBiome<T>[];
-    getBiomeByHeight(height: number): WorldBiome<T> | undefined;
-}
diff --git a/dist/world.d.ts b/dist/world.d.ts
deleted file mode 100644
index 266d51b..0000000
--- a/dist/world.d.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-import { WorldBiomePosition } from './types';
-export declare class World<T> {
-    readonly width: number;
-    readonly height: number;
-    readonly seed: number[];
-    private matrix;
-    constructor(matrix: T[][], seed: number[]);
-    getMatrix(): T[][];
-    each(callback: (position: WorldBiomePosition, biome: T) => boolean | void): void;
-    getAt(position: WorldBiomePosition): T | null;
-    replaceAt(position: WorldBiomePosition, data: T): void;
-}
diff --git a/package.json b/package.json
index b1ebcff..a17840b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "gen-biome",
   "description": "Procedural generation of 2D maps with distinct biomes",
-  "version": "3.0.3",
+  "version": "3.0.4",
   "keywords": [
     "map",
     "generation",
diff --git a/src/world/biome/index.ts b/src/biome/index.ts
similarity index 100%
rename from src/world/biome/index.ts
rename to src/biome/index.ts
diff --git a/src/world/biome/types.ts b/src/biome/types.ts
similarity index 100%
rename from src/world/biome/types.ts
rename to src/biome/types.ts
diff --git a/src/generator/index.ts b/src/generator/index.ts
index 8a18477..46c1828 100644
--- a/src/generator/index.ts
+++ b/src/generator/index.ts
@@ -2,9 +2,9 @@ import type { WorldGenerationParams } from "./types";
 import { Perlin } from "../utils/perlin";
 import { Seed } from "../utils/seed";
 import { World } from "../world";
-import { WorldBiome } from "../world/biome";
+import { WorldBiome } from "../biome";
 import type { WorldConfig } from "../world/types";
-import type { WorldBiomeConfig } from "../world/biome/types";
+import type { WorldBiomeConfig } from "../biome/types";
 
 export class WorldGenerator<T extends object> {
   readonly config: WorldConfig;
diff --git a/src/index.ts b/src/index.ts
index 7bbc175..0edaf7c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,8 +1,14 @@
-export * from './generator';
-export * from './generator/types';
-export * from './world';
-export * from './world/types';
-export * from './world/biome';
-export * from './world/biome/types';
-export * from './utils/perlin';
-export * from './utils/seed';
+export { WorldGenerator } from "./generator";
+export { World } from "./world";
+export { WorldBiome } from "./biome";
+
+import type { WorldConfig, WorldPoint } from "./world/types";
+import type { WorldGenerationParams } from "./generator/types";
+import type { WorldBiomeConfig } from "./biome/types";
+
+export type {
+  WorldConfig,
+  WorldPoint,
+  WorldGenerationParams,
+  WorldBiomeConfig,
+};
diff --git a/src/utils/perlin/index.ts b/src/utils/perlin/index.ts
index 6662658..b3b67d0 100644
--- a/src/utils/perlin/index.ts
+++ b/src/utils/perlin/index.ts
@@ -8,6 +8,9 @@ import {
 } from "./const";
 import type { PerlinParameters } from "./types";
 
+/**
+ * @internal
+ */
 export class Perlin {
   public static generate({ x, y, seed, config }: PerlinParameters): number {
     const {
diff --git a/src/utils/perlin/types.ts b/src/utils/perlin/types.ts
index 68a5480..8713915 100644
--- a/src/utils/perlin/types.ts
+++ b/src/utils/perlin/types.ts
@@ -1,5 +1,8 @@
 import type { WorldConfig } from "../../world/types";
 
+/**
+ * @internal
+ */
 export type PerlinParameters = {
   seed: number[]
   config: WorldConfig
diff --git a/src/utils/seed/index.ts b/src/utils/seed/index.ts
index 500984f..d3e9367 100644
--- a/src/utils/seed/index.ts
+++ b/src/utils/seed/index.ts
@@ -1,11 +1,14 @@
+/**
+ * @internal
+ */
 export class Seed {
   public static generate(size: number = 512) {
     const seed: number[] = [];
-  
+
     for (let i = 0; i < size; i++) {
       seed.push(Math.random());
     }
-  
+
     return seed;
   }
-}
\ No newline at end of file
+}
diff --git a/tsconfig.json b/tsconfig.json
index b8296e8..ce9da8d 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,6 +5,7 @@
     "target": "es6",
     "esModuleInterop": true,
     "declaration": true,
+    "stripInternal": true,
     "strict": true
   },
   "include": ["./src/**/*"]