GraphQL - 语法错误：预期“：”，找到“）”[关闭]

Question

我正在使用带有一些基本查询和突变的 GraphQL 进行项目。我已经以与过去相同的格式设置了 typeDefs 和解析器，并且大多数情况下都期望得到相同的结果。但是，当我尝试启动服务器时，出现以下错误。到目前为止，我已经一次从我的 typeDefs 中删除了查询和突变，并且一次注释掉了一个解析器，但没有任何效果。我仔细阅读了错误位置，但无法真正找到任何可以将我指向存在此语法错误的区域甚至文件的信息。任何帮助都会非常有帮助！

$ npm start

> crm-tools@1.0.0 start E:\Coding_Bootcamp\projects\CRM-Tools\server
> node server.js

E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:1413
    throw (0, _syntaxError.syntaxError)(this._lexer.source, token.start, "Expected ".concat(getTokenKindDesc(kind), ", found ").concat(getTokenDesc(token), "."));
    ^

GraphQLError [Object]: Syntax Error: Expected ":", found ")".
    at syntaxError (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\error\syntaxError.js:15:10)
    at Parser.expectToken (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:1413:40)
    at Parser.parseInputValueDef (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:912:10)
    at Parser.optionalMany (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:1503:28)
    at Parser.parseArgumentDefs (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:900:17)
    at Parser.parseFieldDefinition (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:880:21)
    at Parser.optionalMany (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:1503:28)
    at Parser.parseFieldsDefinition (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:868:17)
    at Parser.parseObjectTypeDefinition (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:812:23)
    at Parser.parseTypeSystemDefinition (E:\Coding_Bootcamp\projects\CRM-Tools\server\node_modules\graphql\language\parser.js:708:23) {
  locations: [ { line: 53, column: 25 } ]
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! crm-tools@1.0.0 start: `node server.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the crm-tools@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\shawn\AppData\Roaming\npm-cache\_logs\2021-07-02T03_23_00_391Z-debug.log

/typedefs.js

const { gql } = require('apollo-server-express');

// create our typeDefs
// TODO timecard formatting?
const typeDefs = gql`
type Employee {
  _id: ID
  firstName: String
    lastName: String
    street: String
    city: String
    state: String
    zipcode: Int
    email: String
    phone: String
    timeCards: [Int]
}  

type Client {
    _id: ID
    firstName: String
    lastName: String
    street: String
    city: String
    state: String
    zipcode: Int
    email: String
    phone: String
    workOrders: [WorkOrder]
  }
  
  type WorkOrder {
    _id: ID
    date: String
    description: String
    notes: [String]
    parts: [String]
    invoice: String
    timeClocks: [Int]
  }

  type Warehouse {
    parts: [String]
    laborItems: [String]
  }
 

  type Query {
    me: Employee
    employees(_id: ID): [Employee]
    employee(_id: ID!): Employee
    clients: [Client]
    client(_id: ID!): Client
  }

  type Mutation {
    addEmployee(Employee): Employee
  }
`;


// export the typeDefs
module.exports = typeDefs;

resolvers.js

const { Client, Employee } = require('../models');

const resolvers = {
    Query: {
        // get all clients
        clients: async () => {
            return Client.find()
            .populate("workOrders");
        },

            // get single client
        client: async (parent, { _id }) => {
            return Client.findOne({ _id })
            //.populate("workOrders");
        },

        // get all employees
        employees: async () => {
            return Employee.find()
            .populate("timeCards");
        },

        // get single employee
        employee: async(parent, { _id }) => {
            return Employee.findOne({ _id })
            .populate("timeCards");
        }
    },

    Mutation: {
        addEmployee: async (parent, args) => {
            const employee = await Employee.create(args);
        }
    }
};

module.exports = resolvers;

Answer 1

mutation的定义不正确，需要在type前加一个变量：

type Mutation {
  addEmployee(employee: Employee): Employee
}

您可以通过 graphiql 插件或 publicly available one 验证您的 graphql 的语法。