普里斯玛。Javascript to Typescript

Question

我正在使用Prisma和Javascript。它工作得很好。升级到typescript后，出现以下错误：GraphQLError: Syntax Error: Cannot parse the unexpected character ".".

// index.ts

const path = require('path')
const express = require('express')
const { importSchema } = require('graphql-import')
const { ApolloServer } = require('apollo-server-express')
const { Prisma } = require('prisma-binding')
const { makeExecutableSchema } = require('graphql-tools')
import resolvers from './resolvers'


const { directiveResolvers } = require('./directives')



const schema = makeExecutableSchema({
  typeDefs: './schema.graphql',
  resolvers,
  directiveResolvers
})

const server = new ApolloServer({
  debug: true,
  schema,
  formatError: error => error,

  context: req => ({
    ...req,
    db: new Prisma({
      typeDefs: path.join(__dirname, './generated-schema.graphql'),
      endpoint: 'http://localhost:4466/nacho/prod'
    })
  })
})

const app = express()

const port = 9000
app.listen({ port }, () => console.log(`? Server ready at http://localhost:4000${server.graphqlPath}`))

// tsconfig.json
{
  "compilerOptions": {
    "target": "es5",
    "moduleResolution": "node",
    "module": "commonjs",
    "sourceMap": true,
    "allowJs": true,
    "rootDir": "src",
    "outDir": "dist",
    "lib": ["es2016", "esnext.asynciterable"]
  },
  "exclude": ["test", "dist"],
  "include": ["src/**/*"]
}

然后我运行tsc，它工作了，然后是node dist/index_server.js，我有这个错误：

/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/lexer.js:270
  throw (0, _syntaxError.syntaxError)(source, pos, unexpectedCharacterMessage(code));
  ^
GraphQLError: Syntax Error: Cannot parse the unexpected character ".".
    at syntaxError (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/error/syntaxError.js:15:10)
    at readToken (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/lexer.js:270:38)
    at Object.lookahead (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/lexer.js:54:43)
    at Object.advanceLexer [as advance] (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/lexer.js:44:33)
    at Parser.expectToken (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/parser.js:1399:19)
    at Parser.many (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/parser.js:1514:10)
    at Parser.parseDocument (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/parser.js:111:25)
    at Object.parse (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql/language/parser.js:36:17)
    at Object.buildSchemaFromTypeDefinitions (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql-tools/dist/generate/buildSchemaFromTypeDefinitions.js:19:33)
    at makeExecutableSchema (/Users/alan/Documents/app/nacho/prismaTs/node_modules/graphql-tools/dist/makeExecutableSchema.js:26:29)
    at Object.<anonymous> (/Users/alan/Documents/app/nacho/prismaTs/dist/index_server.js:29:14)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)

Answer 1

检查'./schema.graphql'是否存在语法错误？

无论您使用的是什么IDE，都应该有一个用于读取graphql模式的插件，并且应该突出显示语法错误。