diff --git a/lib/src/decorators/ignore.ts b/lib/src/decorators/ignore.ts
new file mode 100644
index 0000000..62a836a
--- /dev/null
+++ b/lib/src/decorators/ignore.ts
@@ -0,0 +1,15 @@
+import { ModelConstructor } from "../interfaces";
+
+export const IGNORABLE_FIELDS = new WeakMap<ModelConstructor, Set<string>>();
+
+export function ignore(value: unknown, context: ClassFieldDecoratorContext) {
+  context.addInitializer(function () {
+    const ctor = this.constructor as ModelConstructor;
+    let set = IGNORABLE_FIELDS.get(ctor);
+    if (!set) {
+      set = new Set<string>();
+      IGNORABLE_FIELDS.set(ctor, set);
+    }
+    set.add(context.name as string);
+  });
+}
diff --git a/lib/src/decorators/immutable.ts b/lib/src/decorators/immutable.ts
new file mode 100644
index 0000000..d90f781
--- /dev/null
+++ b/lib/src/decorators/immutable.ts
@@ -0,0 +1,15 @@
+import { ModelConstructor } from "../interfaces";
+
+export const IMMUTABLE_FIELDS = new WeakMap<ModelConstructor, Set<string>>();
+
+export function immutable(value: unknown, context: ClassFieldDecoratorContext) {
+  context.addInitializer(function () {
+    const ctor = this.constructor as ModelConstructor;
+    let set = IMMUTABLE_FIELDS.get(ctor);
+    if (!set) {
+      set = new Set<string>();
+      IMMUTABLE_FIELDS.set(ctor, set);
+    }
+    set.add(context.name as string);
+  });
+}
diff --git a/lib/src/decorators/index.ts b/lib/src/decorators/index.ts
new file mode 100644
index 0000000..74308b9
--- /dev/null
+++ b/lib/src/decorators/index.ts
@@ -0,0 +1,3 @@
+export * from "./ignore";
+export * from "./immutable";
+export * from "./utils";
diff --git a/lib/src/decorators/property.ts b/lib/src/decorators/property.ts
new file mode 100644
index 0000000..cf74376
--- /dev/null
+++ b/lib/src/decorators/property.ts
@@ -0,0 +1,11 @@
+export class PropertyMetadata {
+  get(object: any, property: string) {
+    console.warn(object, property);
+  }
+}
+
+export function property() {
+  return function (target: object, property: string) {
+    console.warn(target, property);
+  };
+}
diff --git a/lib/src/decorators/utils.ts b/lib/src/decorators/utils.ts
new file mode 100644
index 0000000..93d3ced
--- /dev/null
+++ b/lib/src/decorators/utils.ts
@@ -0,0 +1,17 @@
+import { IMMUTABLE_FIELDS } from "./immutable";
+import { IGNORABLE_FIELDS } from "./ignore";
+
+export const getImmutableKeys = (obj: any): string[] => {
+  const ctor = obj.constructor;
+  return IMMUTABLE_FIELDS.has(ctor) ? Array.from(IMMUTABLE_FIELDS.get(ctor) as Set<string>) : [];
+};
+
+export const isImmutableKey = (object: any, key: string) => getImmutableKeys(object).includes(key);
+
+export const getIgnorableKeys = (obj: any): string[] => {
+  const ctor = obj.constructor;
+
+  return IGNORABLE_FIELDS.has(ctor) ? Array.from(IGNORABLE_FIELDS.get(ctor) as Set<string>) : [];
+};
+
+export const isIgnorableKey = (object: any, key: string) => getIgnorableKeys(object).includes(key);
diff --git a/lib/src/index.ts b/lib/src/index.ts
index e69de29..ddfec6d 100644
--- a/lib/src/index.ts
+++ b/lib/src/index.ts
@@ -0,0 +1,3 @@
+export * from "./models";
+export * from "./decorators";
+export * from "./interfaces";
diff --git a/lib/src/interfaces/index.ts b/lib/src/interfaces/index.ts
index e69de29..636af4d 100644
--- a/lib/src/interfaces/index.ts
+++ b/lib/src/interfaces/index.ts
@@ -0,0 +1,8 @@
+export type ModelConstructor = new (...args: any[]) => IModel;
+
+export type TypeOfModel = "collection";
+
+export interface IModel {
+  readonly id: string;
+  readonly type: TypeOfModel;
+}
diff --git a/lib/src/models/collection.ts b/lib/src/models/collection.ts
new file mode 100644
index 0000000..11f391a
--- /dev/null
+++ b/lib/src/models/collection.ts
@@ -0,0 +1,75 @@
+import { ignore } from "../decorators/ignore";
+
+export class Collection<T> {
+  @ignore readonly id = crypto.randomUUID();
+  private _store: Record<number, T> = {};
+
+  get length() {
+    return Object.keys(this._store).length;
+  }
+
+  constructor(args: T[] = []) {
+    args.forEach((item, index) => (this._store[index] = item));
+  }
+
+  *[Symbol.iterator]() {
+    const array = this.toArray();
+    for (const item of array) {
+      yield item;
+    }
+  }
+
+  push(...args: T[]) {
+    const diff: Record<number, T> = {};
+    args.forEach((item) => {
+      const index = this.length;
+      this._store[index] = item;
+      diff[index] = item;
+    });
+    return { ...diff, length: this.length };
+  }
+
+  remove(item: T) {
+    const backup: Record<number, T> = { ...this._store };
+
+    Object.keys(this._store).forEach((key) => {
+      const index = Number(key);
+      const itemOfIndex = this.get(index);
+      if (item !== itemOfIndex) return;
+
+      Reflect.deleteProperty(this._store, Number(key));
+    });
+
+    const diff: Record<number, T> = {};
+    const values = Object.values(this._store);
+    const newStore: Record<number, T> = {};
+
+    for (let index = 0; index < values.length; index++) {
+      newStore[index] = values[index];
+
+      if (backup[index] !== newStore[index]) {
+        diff[index] = newStore[index];
+      }
+    }
+    this._store = newStore;
+
+    return { ...diff, length: this.length };
+  }
+
+  indexOf(item: T) {
+    return this.toArray().indexOf(item);
+  }
+
+  get(index: number): T {
+    return this._store[index];
+  }
+
+  set(index: number, value: T) {
+    this._store[index] = value;
+    return { [index]: value, length: this.length };
+  }
+
+  toArray(): T[] {
+    return Object.keys(this._store).map((index) => this._store[index]);
+  }
+}
diff --git a/lib/src/models/index.ts b/lib/src/models/index.ts
new file mode 100644
index 0000000..7c36a75
--- /dev/null
+++ b/lib/src/models/index.ts
@@ -0,0 +1 @@
+export * from "./collection";
diff --git a/lib/src/package.json b/lib/src/package.json
index f576691..6873169 100644
--- a/lib/src/package.json
+++ b/lib/src/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "@gxc-solutions/lib",
+  "name": "@gxc-solutions/model-base",
   "version": "0.0.1",
   "main": "index.js",
   "author": "GXC Solutions",