Joi2gql NPM | npm.io

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Easily convert Joi schemas into GraphQL data types.

Installation

npm install --save joi2gql

graphql-js is listed as a peer dependency. joi2gql does not install it's own instance of graphql and instead requires parent module to provide it. This avoids any version collisions.

Example

const Joi    = require('joi');
const Joi2GQL = require('joi2gql');

const joiSchema = Joi.object().keys({
    key1: Joi.string(),
    key2: Joi.number().integer(),
    key3: Joi.array().items(Joi.string()),
    key4: Joi.object().keys({
        subKey1: Joi.string(),
        subKey2: Joi.number()
    })
});

const GraphQLDataType = Joi2GQL.transmuteType(joiSchema);

Usage

const {
    Server
} = require('hapi');
const {
    graphqlHapi 
} = require('apollo-server-hapi');

const Joi    = require('joi');
const Joi2GQL = require('joi2gql');

const port   = '3000';
const host   = 'localhost';
const server = new Server();

server.connection({ port, host });

const songSchema = Joi.object().keys({
    artist: Joi.string(),
    title : Joi.string(),
    length: Joi.number().integer(),
});

const config = {
    name: 'Song',
    args: {
        id: Joi.number().integer()
    },
    resolve: (root, args) => {
        return {
            artist: 'Tycho',
            title : 'Awake',
            length: 4.43
        };
    }
};

const Song = Joi2GQL.transmuteType(songSchema, config);
const rootGQLSchema = {
    query: {
        song: Song
    }
};

server.register({
    register: graphqlHapi,
    options : {
        path          : '/graphql',
        graphqlOptions: {
            schema: Joi2GQL.transmuteSchema( rootGQLSchema )
        }
    }
});

server.start(() => {
    if (err) {
        throw new Error(err);
    }
    
    console.log(`Entering the matrix on port: ${server.info.port}`
});