AppController

import { Get, Controller, Post, Body, UsePipes, UseInterceptors, FileInterceptor, UploadedFile } from '@nestjs/common'
import { SamplePipe } from './sample.pipe';

@Controller('sample')
export class SampleController {
  @Get()
  sampleGet() {
    return 'hello'
  }
  @UsePipes(SamplePipe)
  @UseInterceptors(FileInterceptor('file'))
  @Post()
  samplePost(@UploadedFile() file) {
    return file
  }
}

AppModule

import { Module } from '@nestjs/common'
import { SampleController } from './app.controller';

@Module({
  controllers: [SampleController],
  providers: []
})
export class AppModule {}

SamplePipe

import { Injectable, ArgumentMetadata, PipeTransform } from '@nestjs/common';

@Injectable()
export class SamplePipe implements PipeTransform {
  transform(value: any, metadata: ArgumentMetadata) {
    console.log("I'm working")
    return value;
  }
}