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@egodigital/nef
Advanced tools
Managed Extensibility Framework like library written for Node.js 10+, in TypeScript.
Execute the following command from your project folder, where your package.json
file is stored:
npm install --save @egodigital/nef
# install modules
npm install
# build
npm run build
You have to enable decorator feature in your tsconfig.json
file:
{
"compilerOptions": {
// ...
"experimentalDecorators": true
},
// ...
}
First define a service and a contract:
import { Export } from '@egodigital/nef';
interface IMyService {
foo(): string;
}
@Export('IMyService') // we have to use a string here, because in TypeScript, Interfaces are virtual and no objects
export class MyService implements IMyService {
public foo() {
return 'bar';
}
}
In that example MyService
is the implemented service of IMyService
contract.
Now, implement a class, which gets an instance, exported with IMyService
contract, as injected object:
import { Import } from '@egodigital/nef';
export class MyContext {
@Import('IMyService')
public service: IMyService;
}
At the end, the thing, which collects all exports and injects them into object properties, marked with @Import
decorators, is an CompositionContainer
instance:
import { CompositionContainer } from '@egodigital/nef';
let context = new MyContext();
let container = new CompositionContainer();
container.addClasses(MyService); // tell explicitly, that 'MyService' is
// a class with an '@Export' decorator
container.composeSync(context);
// now 'context.service' should
// hold an instance of 'MyService' class
// managed by 'container'
Catalogs helps to detect classes, which should be exported as services.
A catalog based on one or more JavaScript modules one application.
import { ApplicationCatalog, CompositionContainer } from '@egodigital/nef';
let container = new CompositionContainer();
container.addCatalogs(
new ApplicationCatalog(process) // add current application
);
// shorter:
// container.addApplications(process);
A catalog for a single class.
import { ClassCatalog, CompositionContainer, Export } from '@egodigital/nef';
@Export()
class MyService {
}
let container = new CompositionContainer();
container.addCatalogs(
new ClassCatalog(MyService)
);
// shorter:
// container.addClasses(MyService);
A catalog based on one or more JavaScript modules in a directory.
import { CompositionContainer, DirectoryCatalog } from '@egodigital/nef';
let container = new CompositionContainer();
container.addCatalogs(
new DirectoryCatalog('/path/to/directory')
);
// shorter:
// container.addDirectories('/path/to/directory');
A catalog based on one or more JavaScript modules in a single file.
import { CompositionContainer, FileCatalog } from '@egodigital/nef';
let container = new CompositionContainer();
container.addCatalogs(
new FileCatalog('/path/to/file.js')
);
// shorter:
// container.addFiles('/path/to/file.js');
A catalog for a JavaScript module.
import { CompositionContainer, ModuleCatalog } from '@egodigital/nef';
const myModule = require('my-module');
let container = new CompositionContainer();
container.addCatalogs(
new ModuleCatalog(myModule)
);
// shorter:
// container.addModules(myModule);
The API documentation can be found here.
FAQs
Managed Extensibility Framework like library written for Node.js
The npm package @egodigital/nef receives a total of 2 weekly downloads. As such, @egodigital/nef popularity was classified as not popular.
We found that @egodigital/nef demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
Did you know?
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