Apollo Graphql Custom Scalar JSON -抱怨"TypeError: type.getFields不是一个函数“

Question

我在一个apollo-express graphql服务器上工作。我试图集成“graphql- type -json”模块，但当我跟随this description学习如何集成时，我尝试了很多方法，但似乎类型没有正确地传递给解析器--但我在调试过程中遇到了困难，需要一点帮助。这是我正在做的事情的摘要。

import { makeExecutableSchema } from 'graphql-tools';
const GraphQLJSON = require('graphql-type-json');
//Have also tried import GraphQLJSON from 'graphql-type-json';

const schema = `
scalar JSON

type Device {
  deviceconfig: JSON
}

type Query {
  foo: Foo
}
`;

const resolveFunctions = {
   JSON: GraphQLJSON,
   //JSON: {return GraphQLJSON} stops error but other issues come up...
   Query: ...
 };

const jsSchema = makeExecutableSchema({
typeDefs: schema,
resolvers: resolveFunctions,
resolverValidationOptions: {
  requireResolversForNonScalar: false,
},
allowUndefinedInResolve: true,
printErrors: true,
});

不确定它是否相关，但我的npm有几个问题：

graphql-type-json@0.1.4

UNMET PEER DEPENDENCY graphql@0.8.2 invalid

├─┬ graphql-tools@0.4.2

│ ├── UNMET PEER DEPENDENCY graphql@^0.5.0 || ^0.6.0


npm ERR! peer dep missing: graphql@^0.6.1 || ^0.7.0, required by apollo-server@0.3.3

npm ERR! peer dep missing: graphql@^0.5.0, required by graphql-tools@0.4.2

npm ERR! extraneous: casual@1.5.8 /home/apollo/node_modules/casual

npm ERR! extraneous: mongoose@4.6.6 /home/apollo/node_modules/mongoose

npm ERR! extraneous: mysql-events@0.0.8 /home/apollo/node_modules/mysql-events

npm ERR! peer dep missing: graphql@^0.5.0 || ^0.6.0, required by express-widgetizer@0.5.11

Answer 1

我在解析器中像这样解析了自定义标量JSON

 JSON: {

    __serialize(value) {
        return GraphQLJSON.parseValue(value);
    } }

对我来说效果很好。我想这会对你有帮助的