"@angular/animations": "^4.4.6", "@angular/common": "^4.4.6", "@angular/compiler": "^4.4.6", "@angular/core": "^4.4.6", "@angular/forms": "^4.4.6", "@angular/http": "^4.4.6", "@angular/platform-browser": "^4.4.6", "@angular/platform-browser-dynamic": "^4.4.6", ...
里面有自动生成的polyfill.ts文件,打开可以看到这样的内容: /***...IE11 requires the following for NgClass support on SVG elements */ import 'classlist.js'; // Run `npm...If you use AOT (and only Angular decorators), you can remove. import 'corejs/es7/reflect...
We've introduced a new parameter calledclassType(a class type containingclass-validatordecorators) that you should provide, to enable us to perform dynamic validations. ClassValidatorFormGroup A typescript class extending angularFormGroupclass, with a minor change ofconstructorsignature, theclassType par...
modules/@angular/fire/fesm2015/angular-fire.js:()=>[{type:Object,decorators:[{type:Inject,args...
Method decorators also don't provide useful context for a parameter, such as its name, that could otherwise be leveraged by something like a @FromForm parameter in an HTTP router:// without parameter decorators: class BookApi { @Route("/book/:isbn/review", { method: "post", form: true...
"experimentalDecorators": true, "target": "es2020", "typeRoots": [ "node_modules/@types" ], "lib": [ "es2018", "dom" ] } } Please refer the below UG link for further references.Angular UG: https://angular.io/guide/migration-update-module-and-target-c...
Its important to set these options intsconfig.jsonfile of your project: {"emitDecoratorMetadata":true,"experimentalDecorators":true} Example of usage Create a fileUserController.ts import'reflect-metadata';import{Controller,Param,Body,Get,Post,Put,Delete}from'routing-controllers';@Controller()exportc...
Other decorators Working with generics Implicit type conversion How does it handle circular references? Example with Angular2 Samples Release notesWhat is class-transformer⬆ In JavaScript there are two types of objects:plain (literal) objects class (constructor) objectsPlain...
若要启用实验性的装饰器特性,你必须在命令行或tsconfig.json里启用experimentalDecorators编译器选项 添加到类上, 类装饰器 添加到方法上,方法装饰器 添加到访问器上,访问器装饰器 添加到属性上,属性装饰器 添加到参数上,参数装饰器 装饰器工厂:如果我们要定制一个修饰器如何应用到一个声明上,我们得写一个装饰...
For example, you could rethink UnhappyGreeting and EnthusiasticGreeting as decorators. It would still take more boilerplate than the functional-style approach used above, but that’s the price you pay for the safety and encapsulation of real classes. The thing is, in JavaScript, you’re not ...