Inject Alias Decorator

When you add an alias name for a module, you can inject all modules with the same alias name as a dependency map or set into another module.

Usage

Use the @injectAlias(NAME, KEY_BY?) decorator to inject a dependency Map or Set into a module. The decorator accepts the alias name as the first argument, resulting in a set of modules defined with the alias name. If you pass the second KEY_BY optional argument, the result will be a key/value pair map of modules, indexed by the KEY_BY field on each one of them.

import { define, singleton, injectAlias, AliasMap } from "@injex/core";

@define()
@singleton()
export default class MailService {
    @injectAlias("MailProvider", "TYPE") private allMailProviders: AliasMap<string, IMailProvider>;
    @injectAlias("Disposable") private disposables: IDisposable[];

    public sendMail(mail: Mail, providerType: string = "google") {
        this.allMailProviders[providerType].send(mail);
    }

    public destroy() {
        this.disposables.forEach(disposable => disposable.dispose());
    }
}

googleMailProvider.ts

import { define, singleton, alias } from "@injex/core";

@define()
@singleton()
@alias("MailProvider", "Disposable")
export default class GoogleMailProvider implements IMailProvider, IDisposable {
    public readonly TYPE: string = "google";

    public send(mail: Mail) { ... }

    public dispose() { ... }
}

microsoftMailProvider.ts

import { define, singleton, alias } from "@injex/core";

@define()
@singleton()
@alias("MailProvider", "Disposable")
export default class MicrosoftMailProvider implements IMailProvider, IDisposable {
    public readonly TYPE: string = "microsoft";

    public send(mail: Mail) { ... }

    public dispose() { ... }
}

Usage#

Usage