# Decorator Value

Decorator
Module
import { Value } from "@tsed/di"
Source/packages/di/src/decorators/value.ts

# Overview

function Value(expression: any, defaultValue?: any): (target: any, propertyKey: string) => void;

# Description

Return value from Configuration.

# Example

import {Env} from "@tsed/core";
import {Constant, Value} from "@tsed/di";

export class MyClass {

   @Constant("env")
   env: Env;

   @Value("swagger.path")
   swaggerPath: string;

   @Value("swagger.path", "defaultValue")
   swaggerPath: string;

   constructor() {
      console.log(this.swaggerPath) // undefined. Not available on constructor
   }

   $onInit() {
     console.log(this.swaggerPath)  // something
   }
}
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