decorators

.gitignore

@@ -2,3 +2,4 @@
 .DS_Store
 node_modules
 dist
+index.html

package.json

@@ -1 +1,54 @@
-{"version":"0.1.0","license":"MIT","main":"dist/index.js","typings":"dist/index.d.ts","files":["dist","src"],"engines":{"node":">=10"},"scripts":{"start":"tsdx watch","build":"tsdx build","test":"tsdx test","lint":"tsdx lint","prepare":"tsdx build","size":"size-limit","analyze":"size-limit --why"},"husky":{"hooks":{"pre-commit":"tsdx lint"}},"prettier":{"printWidth":80,"semi":true,"singleQuote":true,"trailingComma":"es5"},"name":"typescript","author":"Rajesh Rathore","module":"dist/typescript.esm.js","size-limit":[{"path":"dist/typescript.cjs.production.min.js","limit":"10 KB"},{"path":"dist/typescript.esm.js","limit":"10 KB"}],"devDependencies":{"@size-limit/preset-small-lib":"^8.2.6","husky":"^8.0.3","size-limit":"^8.2.6","tsdx":"^0.14.1","tslib":"^2.6.0","typescript":"^3.9.10"}}
+{
+  "version": "0.1.0",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "typings": "dist/index.d.ts",
+  "files": [
+    "dist",
+    "src"
+  ],
+  "engines": {
+    "node": ">=10"
+  },
+  "scripts": {
+    "start": "tsdx watch",
+    "build": "tsdx build",
+    "test": "tsdx test",
+    "lint": "tsdx lint",
+    "prepare": "tsdx build",
+    "size": "size-limit",
+    "analyze": "size-limit --why"
+  },
+  "husky": {
+    "hooks": {
+      "pre-commit": "tsdx lint"
+    }
+  },
+  "prettier": {
+    "printWidth": 80,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "es5"
+  },
+  "name": "typescript",
+  "author": "Rajesh Rathore",
+  "module": "dist/typescript.esm.js",
+  "size-limit": [
+    {
+      "path": "dist/typescript.cjs.production.min.js",
+      "limit": "10 KB"
+    },
+    {
+      "path": "dist/typescript.esm.js",
+      "limit": "10 KB"
+    }
+  ],
+  "devDependencies": {
+    "@size-limit/preset-small-lib": "^8.2.6",
+    "husky": "^8.0.3",
+    "size-limit": "^8.2.6",
+    "tsdx": "^0.14.1",
+    "tslib": "^2.6.0",
+    "typescript": "^3.9.10"
+  }
+}

src/Decorators/deprecated-decorator.ts

@@ -0,0 +1,9 @@
+export function deprecated(target: any, key: string, descriptor: PropertyDescriptor) {
+    const originalDef = descriptor.value;
+     console.log(target)
+    descriptor.value = function (...args: any[]) {
+      console.log(`Warning: ${key}() is deprecated. Use other methods instead.`);
+      return originalDef.apply(this, args);
+    };
+    return descriptor;
+  }

src/Decorators/enumerable-decorator.ts

@@ -0,0 +1,7 @@
+export function enumerable(isEnumerable: boolean) {
+    return (target: any, key: string, descriptor: PropertyDescriptor) => {
+    console.log(target,key);
+      descriptor.enumerable = isEnumerable;
+      console.log("The enumerable property of this member is set to: " + descriptor.enumerable);
+    };
+  }

src/Decorators/frozen.decorator.ts

@@ -0,0 +1,4 @@
+export function frozen(target: Function) {
+    Object.freeze(target);
+    Object.freeze(target.prototype);
+}

src/Decorators/required-decorator.ts

@@ -0,0 +1,13 @@
+export function required(target: any, key: string) {
+    let currentValue = target[key];
+
+    Object.defineProperty(target, key, {
+      set: (newValue: string) => {
+        if (!newValue) {
+          throw new Error(`${key} is required.`);
+        }
+        currentValue = newValue;
+      },
+      get: () => currentValue,
+    });
+  }

src/Modules/types_in.ts

@@ -0,0 +1 @@
+export const Rajesh='Rajesh'

src/index.ts

@@ -1,6 +1,48 @@
-export const sum = (a: number, b: number) => {
-  if ('development' === process.env.NODE_ENV) {
-    console.log('boop');
+import { deprecated } from "./Decorators/deprecated-decorator";
+import { enumerable } from "./Decorators/enumerable-decorator";
+import { frozen } from "./Decorators/frozen.decorator";
+import { required } from "./Decorators/required-decorator";
+
+@frozen
+class User {
+  private static userType: string = "Generic";
+
+  @required
+  private _email: string;
+
+  @required
+  public username: string;
+
+  public addressLine1: string = "";
+  public addressLine2: string = "";
+  public country: string = "";
+
+  constructor(username: string, email: string) {
+    this.username = username;
+    this._email = email;
   }
-  return a + b;
-};
+
+  @enumerable(false)
+  get userType() {
+    return User.userType;
+  }
+
+  get email() {
+    return this._email;
+  }
+
+  set email(newEmail: string) {
+    this._email = newEmail;
+  }
+
+  @deprecated
+  address(): any {
+    return `${this.addressLine1}\n${this.addressLine2}\n${this.country}`;
+  }
+}
+
+const p = new User("uut", "example@example.com");
+p.addressLine1 = "1, New Avenue";
+p.addressLine2 = "Bahcelievler, Istanbul";
+p.address();
+console.log(JSON.stringify(p));

test/blah.test.ts

@@ -1,7 +1 @@
-import { sum } from '../src';
 
-describe('blah', () => {
-  it('works', () => {
-    expect(sum(1, 1)).toEqual(2);
-  });
-});

tsconfig.json

@@ -30,6 +30,8 @@
     // error out if import and file system have a casing mismatch. Recommended by TS
     "forceConsistentCasingInFileNames": true,
     // `tsdx build` ignores this option, but it is commonly used when type-checking separately with `tsc`
+    "emitDecoratorMetadata": true,
+"experimentalDecorators": true,
     "noEmit": true,
   }
 }