NestJS与Apollo Federation中buildFederatedSchema废弃警告解决方法

使用NestJS和Apollo Federation开发过程中，更新依赖后出现如下告警：

(node:19113) DeprecationWarning: 'buildFederatedSchema' is deprecated. Use 'buildSubgraphSchema' instead.

代码中没有直接调用buildSubgraphSchema的场景，也未在NestJS或Apollo Federation官方文档中找到消除该废弃警告的方法。项目可正常运行，需要消除该告警。

项目依赖（package.json） #

"dependencies": {
  "@apollo/federation": "^0.33.3",
  "@apollo/subgraph": "^0.1.2",
  "@nestjs/common": "^8.0.0",
  "@nestjs/config": "^1.0.2",
  "@nestjs/core": "^8.0.0",
  "@nestjs/graphql": "^9.1.1",
  "@nestjs/mongoose": "^9.0.1",
  "@nestjs/platform-express": "^8.0.0",
  "apollo-server-express": "^3.4.0",
  "class-transformer": "^0.4.0",
  "class-validator": "^0.13.1",
  "graphql": "^15.6.1",
  "helmet": "^4.6.0",
  "joi": "^17.4.2",
  "mongoose": "^6.0.12",
  "reflect-metadata": "^0.1.13",
  "rimraf": "^3.0.2",
  "rxjs": "^7.2.0"
},

GraphQL模块配置（graphql.module.ts） #

import { Module } from '@nestjs/common';
import { GraphQLFederationModule } from '@nestjs/graphql';
import { ApolloServerPluginInlineTraceDisabled } from 'apollo-server-core';

@Module({
  imports: [
    GraphQLFederationModule.forRoot({
      plugins: [ApolloServerPluginInlineTraceDisabled()],
      autoSchemaFile: true,
      playground: true,
      introspection: true,
      buildSchemaOptions: {
        dateScalarMode: 'isoDate',
      },
      context: ({ req }) => ({
        jwt: req.headers.authorization,
      }),
    }),
  ],
})
export class GraphqlModule {}

将@nestjs/graphql依赖从v9版本升级到v10版本即可解决该问题。v10版本的@nestjs/graphql已经完成了Apollo Federation新API的适配，内部替换了废弃的buildFederatedSchema调用，升级完成后重启服务，弃用警告就会消失。

内容的提问来源于stack exchange，提问作者Marcos Henrique da Silva