Features

• common: refactor the built-in console logger class #6142 #5353, separate out Logger wrapper class and ConsoleLogger class, add buffering logs feature (buffer init logs and flush them out when a custom logger is assigned), add log level output #6172, support log levels feature nestjs/docs.nestjs.com#1613
• common: add StreamableFile class for streaming files from controller routes (cross-platform) https://github.com/nestjs/nest/pull/5278
• common: add ParseFloatPipe and ParseEnumPipe classes https://github.com/nestjs/nest/pull/6232
• core: add lazy module loader class https://github.com/nestjs/nest/pull/6386
• core: add RouterModule for defining per-module controller prefixes
• core: add the ability to exclude certain routes from the global prefix https://github.com/nestjs/nest/pull/5291
• core: API versioning feature https://github.com/nestjs/nest/pull/6278
• microservices: support multiple event subscribers ([@EventPattern](https://github.com/EventPattern)() can be applied to multiple methods) https://github.com/nestjs/nest/pull/6334
• microservices: support passing a property key to the [@Payload](https://github.com/Payload)() decorator https://github.com/nestjs/nest/pull/5975
• websockets: support passing a property key to the [@MessageBody](https://github.com/MessageBody)() decorator
• websockets: (WsAdapter) support registering gateways on different paths and let them share the same HTTP server https://github.com/nestjs/nest/pull/6321

Improvements

• core: sort modules topologically when invoking lifecycle hooks https://github.com/nestjs/nest/pull/6236
• core: use class references as providers/controllers/injectables keys instead of their names
• https://github.com/nestjs/nest/pull/6141 fixes https://github.com/nestjs/nest/issues/5591 and https://github.com/nestjs/nest/issues/789
• core: BaseExceptionFilter supports http-errors (and any other error objects that have the statusCode property specified) out of the box now https://github.com/nestjs/nest/pull/6349/commits/cdd51b002888e2d4f249c271a958f8e7e1381997
• core: set Error.name property to the name of the class (all exceptions that inherit from the built-in HttpException) https://github.com/nestjs/nest/pull/5859

Bug fixes

• common: add a missing type argument to mixin() function https://github.com/nestjs/nest/pull/6216
• core: use router.all() method for routes annotated with the [@All](https://github.com/All)() decorator (instead of router.use()) https://github.com/nestjs/nest/pull/6237
• core: reject on server bind failures (listen()) https://github.com/nestjs/nest/pull/3360
• websockets: specify @nestjs/platform-socket.io as an optional peer dependency to support PnP mode https://github.com/nestjs/nest/pull/6217

Dependencies

• microservices: update to use @grpc/grpc-js package (instead of grpc) https://github.com/nestjs/nest/pull/4806
• microservices: upgrade NATS to v2 🙌
• platform-socket.io: upgrade Socket.io to v4 🙌

Deprecations

• common: deprecate HttpModule to remove hard dependency on the axios library. HttpModule is published as a new @nestjs/axios package now
• core: deprecate the listenAsync() (use listen()) and startAllMicroservicesAsync() (use startAllMicroservices()) methods
• microservices: deprecate the listenAsync() method (use listen() instead)