Release v5.0.0 · nestjs/nest

core: support async lifecycle hooks (OnModuleInit and OnModuleDestroy) #569
core: HTTP server independence, fastify integration (FastifyAdapter)
core: allow binding global interceptors, filters, pipes, and guards from any module. Example:

{
  provide: APP_INTERCEPTOR,
  useClass: LoggerInterceptor,
}

core: @UseGuards(), @UsePipes(), @UseFilters(), and @UseInterceptors() extend metadata, instead of overriding existing one
core: dependency injection everywhere (pipes, filters, interceptors, and guards)
core: pass ArgumentsHost to exception filters (ability to access each argument)
core: pass enhanced ExecutionContext to both interceptors and guards (ability to access each argument and execution context)
microservices: rewrite existing transporters (TCP, Redis), provide new strategies: Nats, MQTT, gRPC
all: improve execution context performance (http, ws, microservices)

all: remove reflect-metadata peer dependency #563
all: upgrade RxJS to 6.0.0
all: move to Node.js >= 8.9.0 (TypeScript target es2017)
core: more descriptive exceptions (circular dependency) #493
core: Nest container compatible with useContainer() (class-validator and typeorm packages) #528
core: remove static dependencies (webpack compatibility)
websockets: @WebSocketGateway() takes options argument that is passed to socket.io instance #508

common: deprecate @Component(), @Middleware(), @Interceptor(), @Pipe(), and @Guard() decorators (use @Injectable() instead)
common: removed ExpressMiddleware (use MiddlewareFunction)
core: deprecate modules: [] property (use imports: [] instead)
core: deprecate components: [] property (use providers: [] instead)
core: removed MiddlewaresConsumer (use MiddlewareConsumer)

move from traditional express middleware model: each middleware is solely bounded to a particular path, regardless of the request method

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