Custom Scalar Types for GraphQL-Tools
This Node.js module provides the custom scalar types Void, Integer, Float, String, Date, Universally Unique Identifier (UUID) and JavaScript Object Notation (JSON) for GraphQL Tools, a wrapper around the GraphQL engine GraphQL.js.
$ npm install graphql-tools-typesimport UUID from "pure-uuid" import * as GraphQL from "graphql" import * as GraphQLTools from "graphql-tools" import GraphQLToolsTypes from "graphql-tools-types" let definition = ` schema { query: RootQuery } scalar Void scalar MyInt scalar MyFloat scalar MyString scalar Date scalar UUID scalar JSON scalar Coord type RootQuery { exampleVoid: Void exampleMyInt(num: MyInt): Int exampleMyFloat(num: MyFloat): Float exampleMyString(str: MyString): String exampleDate(date: Date): Date exampleUUID(uuid: UUID): UUID exampleJSON(json: JSON): JSON exampleCoord(coord: Coord): Coord } ` let resolvers = { Void: GraphQLToolsTypes.Void({ name: "MyVoid" }), MyInt: GraphQLToolsTypes.Int({ name: "MyInt", min: 0, max: 100 }), MyFloat: GraphQLToolsTypes.Float({ name: "MyFloat", min: 0.0, max: 100.0 }), MyString: GraphQLToolsTypes.String({ name: "MyString", regex: /^(?:foo|bar|quux)$/ }), Date: GraphQLToolsTypes.Date({ name: "MyDate" }), UUID: GraphQLToolsTypes.UUID({ name: "MyUUID" }), JSON: GraphQLToolsTypes.JSON({ name: "MyJSON" }), Coord: GraphQLToolsTypes.JSON({ name: "Coord", struct: "{ x: number, y: number }" }), RootQuery: { exampleVoid: (root, args, ctx, info) => { return {} }, exampleMyInt: (root, args, ctx, info) => { return args.num }, exampleMyFloat: (root, args, ctx, info) => { return args.num }, exampleMyString: (root, args, ctx, info) => { return args.str }, exampleDate: (root, args, ctx, info) => { return args.date }, exampleUUID: (root, args, ctx, info) => { return args.uuid }, exampleJSON: (root, args, ctx, info) => { return args.json }, exampleCoord: (root, args, ctx, info) => { return args.coord } } } let schema = GraphQLTools.makeExecutableSchema({ typeDefs: [ definition ], resolvers: resolvers, }) let query = ` query ($date: Date, $uuid: UUID, $json: JSON, $coord: Coord) { exampleVoid, exampleMyInt(num: 100), exampleMyFloat(num: 42.7), exampleMyString(str: "foo") date1: exampleDate(date: $date), date2: exampleDate(date: "2016-08-16T00:01:02.000Z"), uuid1: exampleUUID(uuid: $uuid), uuid2: exampleUUID(uuid: "6cbe657c-63e3-11e6-aa83-080027e303e4"), json1: exampleJSON(json: $json), json2: exampleJSON(json: { foo: "bar", baz: 42, quux: true }), coord1: exampleCoord(coord: $coord), coord2: exampleCoord(coord: { x: 7, y: 42 }) } ` let variables = { date: "2016-08-16T00:01:02.000Z", uuid: "6cbe657c-63e3-11e6-aa83-080027e303e4", json: { foo: "bar", baz: 42, quux: true }, coord: { x: 7, y: 42 } } GraphQL.graphql(schema, query, null, null, variables).then((result) => { console.log("OK", result) }).catch((result) => { console.log("ERROR", result) })$ npm test OK { data: { exampleJSON: { foo: 'bar', baz: 42, quux: true }, exampleUUID: '6cbe657c-63e3-11e6-aa83-080027e303e4', exampleDate: '2016-08-16T00:01:02.000Z', exampleVoid: {}, exampleMyInt: 100, exampleMyFloat: 42.7, exampleMyString: 'foo' } }Copyright (c) 2016-2021 Dr. Ralf S. Engelschall (http://engelschall.com/)
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