difference between protoloader and generated .js files from grpc

[hounaida rekik]

I am a beginner in GRPC and nodejs. For the first time, I use protoloader to load my services from proto. Then, I want to switch to use generated files from grpc: in my case I have: comment_pb.js, So I replace this code with:

import protoLoader from '@grpc/proto-loader'; const packageDefinition = protoLoader.loadSync('../../../protos/comment.proto', { keepCase: true, longs: String, enums: String, arrays: true }); //pass proto in grpc var commentProto = grpc.loadPackageDefinition(packageDefinition);

With:

import protoLoader from './proto/comment_pb.js';

I don't know what's the diff between these two methods, does this change and impact the rest of the code? there are any helpful links about this.