compose not exported from react-apollo

Question

I'm following a graphql tutorial on youtube (https://www.youtube.com/watch?v=ed8SzALpx1Q at about 3hr 16min) and part of it uses compose from "react-apollo". However, I'm getting an error because the new version of react-apollo does not export this.

I read online that I need to replace import { compose } from "react-apollo" with import { compose } from "recompose" but doing that produces the error TypeError: Cannot read property 'loading' of undefined I've also read that I should replace the import from react-apollo with import * as compose from "lodash" but when I do this I get other errors, saying that × TypeError: lodash__WEBPACK_IMPORTED_MODULE_2__(...) is not a function

App.js:

import React from "react";
import ApolloClient from "apollo-boost";
import { ApolloProvider } from "react-apollo";

import BookList from "./components/BookList";
import AddBook from "./components/AddBook";

//apollo client setup
const client = new ApolloClient({
  uri: "http://localhost:4000/graphql"
});

function App() {
  return (
    <ApolloProvider client={client}>
      <div className="main">
        <h1>My Reading List</h1>
        <BookList />
        <AddBook />
      </div>
    </ApolloProvider>
  );
}

export default App;

queries.js:

import { gql } from "apollo-boost";

const getBooksQuery = gql`
  {
    books {
      name
      id
    }
  }
`;

const getAuthorsQuery = gql`
  {
    authors {
      name
      id
    }
  }
`;

const addBookMutation = gql`
  mutation {
    addBook(name: "", genre: "", authorId: "") {
      name
      id
    }
  }
`;

export { getAuthorsQuery, getBooksQuery, addBookMutation };

AddBooks.js:

import React, { Component } from "react";
import { graphql } from "react-apollo";
import { compose } from "recompose";
// import * as compose from "lodash";
import { getAuthorsQuery, addBookMutation } from "../queries/queries";

class AddBook extends Component {
  state = {
    name: "",
    genre: "",
    authorId: ""
  };

  displayAuthors = () => {
    let data = this.props.data;
    if (data.loading) {
      return <option>loading authors...</option>;
    } else {
      return data.authors.map(author => {
        return (
          <option key={author.id} value={author.id}>
            {author.name}
          </option>
        );
      });
    }
  };

  submitForm(e) {
    e.preventDefault();
    console.log(this.state);
  }

  render() {
    return (
      <form onSubmit={this.submitForm.bind(this)}>
        <div className="field">
          <label>Book name: </label>
          <input
            type="text"
            onChange={e => {
              this.setState({ name: e.target.value });
            }}
          />
        </div>
        <div className="field">
          <label>Genre: </label>
          <input
            type="text"
            onChange={e => {
              this.setState({ genre: e.target.value });
            }}
          />
        </div>
        <div className="field">
          <label>Author: </label>
          <select
            onChange={e => {
              this.setState({ authorId: e.target.value });
            }}
          >
            <option>Select author</option>
            {this.displayAuthors()}
          </select>
        </div>
        <button>+</button>
      </form>
    );
  }
}

export default compose(
  graphql(getAuthorsQuery, { name: "getAuthorsQuery" }),
  graphql(addBookMutation, { name: "addBookMutation" })
)(AddBook);

I expected compose to be imported from react-apollo and to take the query and mutation and make them available inside of AddBook's props, so I can use them in the displayAuthors() and submitForm() funtions, but instead I get the error that it is not exported from react-apollo, and when I try the suggested solutions I found online I get the other errors mentioned above.

Answer 1

compose was removed from React Apollo 3.0.0. If you want to use the same HOC pattern, feel free to use the same copy of lodash's flowRight.

Install lodash in your client folder

npm install lodash 

and use this to import compose from lodash (use a capital R in flowRight)

import {flowRight as compose} from 'lodash';

Reference for the braking changes