A way to gracefully apply AOP to nestjs
Use nestjs managed instances in any decorators gracefully
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npm install @toss/nestjs-aop
pnpm add @toss/nestjs-aop
yarn add @toss/nestjs-aop@Module({
imports: [
// ...
AopModule,
],
})
export class AppModule {}export const CACHE_DECORATOR = Symbol('CACHE_DECORATOR');metadata is the second parameter of createDecorator.
@Aspect(CACHE_DECORATOR)
export class CacheDecorator implements LazyDecorator<any, CacheOptions> {
constructor(private readonly cache: Cache) {}
wrap({ method, metadata: options }: WrapParams<any, CacheOptions>) {
return (...args: any) => {
let cachedValue = this.cache.get(...args);
if (!cachedValue) {
cachedValue = method(...args);
this.cache.set(cachedValue, ...args);
}
return cachedValue;
};
}
}@Module({
providers: [CacheDecorator],
})
export class CacheModule {}options can be obtained from the warp method and used.
export const Cache = (options: CacheOptions) => createDecorator(CACHE_DECORATOR, options)export class SomeService {
@Cache({
// ...options(metadata value)
})
some() {
// ...
}
}We welcome contribution from everyone in this project. Read CONTRIBUTING.md for detailed contribution guide.
MIT © Viva Republica, Inc. See LICENSE for details.