带有TypeScript的Angular2：在@component之后声明预期的编译器错误

Question

Im getting this kind of error despite of the fact i imported Component from angular2/core what should be its source is files are not downloaded through npm install or my node is needs to be upgrade

Here is my file

import {bootstrap} from 'angular2/platform/browser';
import {Component, View} from 'angular2/core';

@Component({

})

Answer 1

Define a class right after the component.

import {bootstrap} from 'angular2/platform/browser';
import {Component, View} from 'angular2/core';

@Component({

})
class MyClass {

}

@Component is just a decorator that contains metadata for the class. In other words it just defines stuff for your class in a more elegant way.

The @Component function takes the configuration object and turns it into metadata that it attaches to the component class definition. Angular discovers this metadata at runtime and thus knows how to do "the right thing".

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