Missing multipart field ‘operations’ with graphql-upload and apollo-server - node.js

Question

Hello I am trying to upload a file using graphql in order to do this I have the following code:
index.js
const express = require('express');
const { ApolloServer, gql } = require('apollo-server-express');
const { graphqlUploadExpress } = require('graphql-upload');
async function startApolloServer() {
const resolvers = {
Query: {
hello: () => 'Hello world!',
},
Mutation: {
singleUpload: async (parent, { file }) => {
const { createReadStream, filename, mimetype, encoding } = await file;
const stream = createReadStream();
const out = require('fs').createWriteStream(filename);
stream.pipe(out);
return { filename, mimetype, encoding, url: '' }
}
}
};
const server = new ApolloServer({
typeDefs:gql`
type Query {
hello: String!
}
type UploadedFileResponse {
filename: String!
mimetype: String!
encoding: String!
url: String!
}
type Mutation {
singleUpload(file: Upload!): UploadedFileResponse!
}`
, resolvers },{uploads:false});
await server.start();
const app = express();
app.use(graphqlUploadExpress({ maxFileSize: 1000000000, maxFiles: 10 }));
server.applyMiddleware({ app });
await new Promise(resolve => app.listen({ port: 4000 }, resolve));
console.log(`🚀 Server ready at http://localhost:4000${server.graphqlPath}`);
return { server, app };
}
startApolloServer()
And in order to call the endpoint I am using the following curl:
curl localhost:4000/graphql \
-F operations='{ "query": "mutation ($file: Upload!) { singleUpload(file: $file) { filename } }", "variables": { "file": null } }' \
-F map='{ "0": ["variables.file"] }' \
-F 0=#/home/user/a.txt
But when I execute this I got the following error:
Missing multipart field ‘operations’
If I remove app.use(graphqlUploadExpress({ maxFileSize: 1000000000, maxFiles: 10 }));
I got another error
function deprecated(...args) {
RangeError: Maximum call stack size exceeded
But in this case I can write a empty file with the correct name.
Any idea about how can I finish this poc in order to upload a file using apollo-graphql.
Package.json
"dependencies": {
"apollo-server": "^2.25.2",
"apollo-server-express": "^2.25.2",
"graphql": "^15.5.1",
"graphql-upload": "^12.0.0"
},
"devDependencies": {
"nodemon": "^2.0.12"
},
But I tried whit this too
"resolutions": {
"**/**/fs-capacitor": "^6.2.0",
"**/graphql-upload": "^11.0.0"
}
Node version: 14.16.1 and 14.17.3
Thanks

Answer 1

In your typDefs, add: scalar Upload
In resolvers, add: Upload: GraphQLUpload
GraphQLUpload is imported from 'graphql-upload': import { GraphQLUpload } from "graphql-upload";