Apollo server types

Apollo server types DEFAULT

These are types which are shared across Apollo Server packages, but kept here to avoid circular dependencies.

Current Tags

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  • 0.9.0-alpha.0                                ...           5 months ago
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  • 0.300.0-lambda.0                                ...           6 months ago
  • 0.300.0-alpha.4                                ...           6 months ago
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  • 0.7.1-unified2.0                                ...           6 months ago
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  • 0.7.0-alpha.0                                ...           7 months ago
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  • 0.4.0-alpha.1                                ...           2 years ago
  • 0.4.0-alpha.0                                ...           2 years ago
  • 0.3.1                                ...           2 years ago
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Sours: https://developer.aliyun.com/mirror/npm/package/apollo-server-types

apollographql / apollo-server Public

A TypeScript GraphQL Server for Express, Koa, Hapi, Lambda, and more.

npm versionBuild StatusJoin the community forumRead CHANGELOG

Apollo Server is a community-maintained open-source GraphQL server. It works with many Node.js HTTP server frameworks, or can run on its own with a built-in Express server. Apollo Server works with any GraphQL schema built with GraphQL.js--or define a schema's type definitions using schema definition language (SDL).

Read the documentation for information on getting started and many other use cases and follow the CHANGELOG for updates.

Principles

Apollo Server is built with the following principles in mind:

  • By the community, for the community: Its development is driven by the needs of developers.
  • Simplicity: By keeping things simple, it is more secure and easier to implement and contribute.
  • Performance: It is well-tested and production-ready.

Anyone is welcome to contribute to Apollo Server, just read CONTRIBUTING.md, take a look at the roadmap and make your first PR!

Getting started

To get started with Apollo Server:

  • Install with
  • Write a GraphQL schema
  • Use one of the following snippets

There are two ways to install Apollo Server:

  • Standalone: For applications that do not require an existing web framework, use the package.
  • Integrations: For applications with a web framework (e.g. , , , etc.), use the appropriate Apollo Server integration package.

For more info, please refer to the Apollo Server docs.

Installation: Standalone

In a new project, install the and dependencies using:

Then, create an which defines the schema and its functionality (i.e. resolvers):

const{ ApolloServer, gql }=require('apollo-server');// The GraphQL schemaconsttypeDefs=gql` type Query { "A simple type for getting started!" hello: String }`;// A map of functions which return data for the schema.constresolvers={Query: {hello: ()=>'world',},};constserver=newApolloServer({ typeDefs, resolvers,});server.listen().then(({ url })=>{console.log(`🚀 Server ready at ${url}`);});

Due to its human-readability, we recommend using schema-definition language (SDL) to define a GraphQL schema--a object from can also be specified instead of and using the property:

constserver=newApolloServer({schema: ... });

Finally, start the server using and go to the URL returned on the console.

For more details, check out the Apollo Server Getting Started guide and the fullstack tutorial.

For questions, the Apollo community forum is a great place to get help.

Installation: Integrations

While the standalone installation above can be used without making a decision about which web framework to use, the Apollo Server integration packages are paired with specific web frameworks (e.g. Express, Koa, hapi).

The following web frameworks have Apollo Server integrations, and each of these linked integrations has its own installation instructions and examples on its package :

Context

A request context is available for each request. When is defined as a function, it will be called on each request and will receive an object containing a property, which represents the request itself.

By returning an object from the function, it will be available as the third positional parameter of the resolvers:

newApolloServer({ typeDefs,resolvers: {Query: {books: (parent,args,context,info)=>{console.log(context.myProperty);// Will be `true`!returnbooks;},}},context: async({ req })=>{return{myProperty: true};},})

Sours: https://github.com/apollographql/apollo-server
  1. Hanging party decorations from ceiling
  2. Graco paint sprayer, cart
  3. Pinkie pie equestria girls
  4. Specialized s works epic 2017
  5. Black nitrile gloves for cooking

In this article, I am going to show how to build GraphQL express server with apollo server and typescript including unit test setup with jest. This can also use as a starter template to build apollo express server quickly and can be developed further for respective api requirement.

Let's start building this starter template project

Setting up the project

Create a new folder and start a project with file

Install Typescript and generate a tsconfig.json file using npx. We will also need nodemon to compile our code on change, and ts-node to exec TypeScript files.

Setting up Express, Apollo and creating a simple GraphQL API

Create a directory with a file.

If you are new to GraphQL, here is a link introducing GraphQL.

Creating GraphQL schema and resolvers

First, let’s create our GraphQL Schema. In the folder, create a folder and 1file inside:

Define schema & query like this:

Let's create a graphQL resolver in folder in

Now we have to make a executable schema from the above schema & resolver. We will use makeExecutableSchema function from graphql-tools library. You can read more details in graphql-tools docs.

Create in folder and write below code:

Setup server with express & apollo server

in our file

Last step: Compile the code

We have to adjust our script in file.

Aaaaand… That’s it! Running in your terminal will compile your code and put it in the folder. Now run the compiled code with

Open graphql playground on your localhost by opening in your browser. You can perform query in playground.

GraphQL Playground

Additional optional part (but most recommended to keep graphQL best practices) Unit Testing with jest:

For the best practice and keep consistent folder structure we can create a folder inside each folder(If you have multiple).

Create inside folder.

Install jest package:

create file in root directory of the project

Let's write a simple unit test in our file.

The above query would simply check if the numbers of user return from query are exactly 2 or not. You can read more about testing with jest in jest documentation

Now let's adjust our script in to automate unit testing with jest

Now we can run all test with and jest will automatically run all tests and display test results in terminal.

Screen-Shot-2021-01-31-at-6.47.02-PM

MISSION ACCOMPLISHED!!
Woohoo... We have made apollo server with typeScript. We can use it as a starter template to build powerful graphQL backend server.

I will soon add full series of Advanced Apollo Federation here so please follow US & stay upToDate.

Sours: https://mbbaig.blog/apollo-server-typescript/
Next.js GraphQL API using Apollo Server 3 and Prisma

Graphql apollo server resolvers arguments types

If you enable all strict type-checking options in , you should add TS type for everything.

Let's take a look at the type of resolver.

Resolver arguments:

- For resolvers of top-level fields with no parent (such as fields of , ), this value is . So the TS type is

- As you can see from the type, it must meet the type parameters in generic constraints . Since the actual parameter is passed from the Graphql client, we need to define the type/interface for each resolver.

- It's a generic parameter, we need to define the application context interface by ourselves.

- The TS type already there

An working example:

E.g.

package versions:

GraphQL Query in client-side:

Response:

Logs in server-side:

answered Jun 8 at 12:27

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Sours: https://stackoverflow.com/questions/67830070/graphql-apollo-server-resolvers-arguments-types

Server types apollo

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Sours: https://www.apollographql.com/docs/apollo-server
Next.js GraphQL API using Apollo Server 3 and Prisma

Apollo Server is distributed as a collection of different packages for different environments and web frameworks. You can choose which package to use based on your project.

Which package should I use?

In most cases, you should get started with the "batteries-included" package.

If your project has specific requirements, we recommend choosing a package based on this flowchart:

After you choose a package, see its basic usage.

All supported packages

NameDescription

This "batteries-included" package helps you get started quickly. Recommended for all projects that don't require serverless support or a particular Node.js framework (such as hapi).

Because it sets helpful defaults, this library is also less configurable than other Apollo Server libraries. Complex projects might eventually need to swap it out for (this process is straightforward).

This library enables you to attach Apollo Server to an Express server.

The library uses this library under the hood. Projects that start by using sometimes need to swap it out for when additional configuration is required.

Serverless-specific packages

The following libraries are available for running in a particular serverless environment:

  • (AWS Lambda)
  • (Google Cloud Functions)
  • (Azure Functions)
  • (Cloudflare)

Use each of these libraries if and only if you're running your server in the corresponding service.

Framework-specific packages

The following libraries are available for integrating Apollo Server with a particular Node.js framework:

  • (Fastify)
  • (hapi)
  • (Koa)
  • (Micro)

Use each of these libraries if and only if you're integrating with the corresponding framework.

Swapping out

After you get up and running with the "batteries-included" package, you might want to configure its HTTP behavior in ways that this package doesn't support. For example, you might want to run some middleware before processing GraphQL requests, or you might want to serve other endpoints from the same server.

In this case, we recommend you swap out for (unless you are confident that you want to use a different Node.js framework). This change requires only a few lines and has a minimal effect on your server's existing behavior ( uses under the hood).

We recommend Express because it's the most popular Node.js web framework, and it integrates well with many other popular libraries. It does have its limitations (for example, Express async support is not built around s and functions), but backward incompatible changes to the framework are rarer than in newer libraries.

Example

Let's say our implementation uses the following code:

index.ts

To swap this out for , we first install the following required packages:

We can (and should) also uninstall.

Next, we can modify our code to match the following:

index.ts

Package conventions

Each Apollo Server package exports an class. The APIs for these classes are similar but not identical.

All Apollo Server packages depend on , which contains the code that's shared by all integrations. Certain symbols, such as built-in plugins, are imported directly from instead of from a particular package.

All Apollo Server packages (and ) are published to npm with the same version number, even if certain packages have no changes for a particular version. This makes it more straightforward to discuss a particular version of Apollo Server without needing to specify a package name.

Certain support libraries (such as , , and ) use their own versioning and are published only when they change or one of their dependencies changes.

Common options

Most Apollo Server packages require calling a method named , , or (depending on the package). These methods accept a (mostly) common set of options (not every package accepts every option).

For descriptions of these options, see the API reference.

The set of common options supported by each package is listed under Basic usage.

Basic usage

The sections below demonstrate how to initialize an instance with each package. More details are available in each package's README.

Each section also lists the options supported by each package's or or function. Learn more about how these options work in the API reference.

is the "batteries-included" Apollo Server package. It enables you to spin up a GraphQL server without thinking about web frameworks or URLs or middleware, and its main entry point () is an function instead of a callback-based function.

index.ts

Although helps you get started quickly, you can't configure its behavior as much as you can other Apollo Server packages. For example, you can't serve other endpoints from the same HTTP server.

If you want to do something with your server that isn't supported by , you can swap to .

is the Apollo Server package for Express, the most popular Node.js web framework. It enables you to attach a GraphQL server to an existing Express server.

The batteries-included library uses under the hood. If you start with and later need to modify how it serves over HTTP, you can swap to .

The following example is roughly equivalent to the example above.

index.ts

You must before calling . You can add other middleware to before or after calling .

You can call instead of if you want to do something with the middleware function besides apply it directly to your app. ( is shorthand for .)

(along with ) accepts the following common options:

    is the GraphQL server for Fastify, a Node.js web framework. Apollo Server 3 supports Fastify v3.

    The following example is roughly equivalent to the example above.

    index.ts

    You must before calling . You can call other functions on before or after calling .

    accepts the following common options:

      See this issue for details about draining Fastify servers. The pattern suggested here isn't perfect; we look forward to suggestions from Fastify users.

      is the GraphQL server for hapi, a Node.js web framework. Apollo Server 3 is only tested with v20.1.2 and later (the minimum version that supports Node.js 16).

      The following example is roughly equivalent to the example above.

      index.ts

      You must before calling . You can call other functions on before or after calling .

      accepts the following common options:

        is the GraphQL server for Koa, a Node.js web framework.

        The following example is roughly equivalent to the example above.

        index.ts

        You must before calling . You can call other functions on before or after calling .

        You can call instead of if you want to do something with the middleware function besides apply it directly to your app. ( is shorthand for .)

        (along with ) accepts the following common options:

          is the GraphQL server for Micro, a Node.js web framework.

          The following example is roughly equivalent to the example above. You should put this code in a file called in order for the CLI to find it.

          index.ts

          Then run the web server with .

          accepts the following common options:

            Note that does not have a built-in way of setting CORS headers.

            We do not have a recommended implementation for . If you use , feel free to contribute one!

            is the GraphQL server for AWS Lambda, Amazon's serverless compute service.

            This package is a layer around , which uses the package to translate Lambda events into Express requests. (This package is not related to the Serverless framework.) It supports API Gateway and ALB.

            The following example is roughly equivalent to the example above.

            index.ts

            For more details on using , see the documentation on deploying to Lambda.

            is the GraphQL server for Cloud Functions, Google's serverless compute service.

            Because the Cloud Functions Node.js runtime uses Express, is a layer around .

            The following example is roughly equivalent to the example above.

            index.ts

            For more details on using , see the documentation on deploying to Cloud Functions.

            is the GraphQL server for Azure Functions, Microsoft's serverless compute service.

            The following example is roughly equivalent to the example above.

            index.ts

            accepts the following common options:

              Note that does not provide a mechanism for adding arbitrary middleware to your web server (other that by manually wrapping the handler returned by in your own handler).

              For more details on using , see the documentation on deploying to Azure Functions.

              is the GraphQL server for Cloudflare Workers. This package is experimental and is not actively supported by Apollo.

              For more details on using Apollo Server with Cloudflare Workers, see the Apollo GraphQL Server Quickstart in the Cloudflare Workers documentation.

              Edit on GitHub

              Sours: https://www.apollographql.com/docs/apollo-server/integrations/middleware/

              You will also be interested:

              importtype{GraphQLSchema,DocumentNode,ParseOptions}from'graphql';importtype{IMocks}from'@graphql-tools/mock';importtype{IResolvers}from'@graphql-tools/utils';importtype{ApolloConfig,ValueOrPromise,GraphQLExecutor,ApolloConfigInput,}from'apollo-server-types';importtype{GraphQLServerOptionsasGraphQLOptions,PersistedQueryOptions,}from'./graphqlOptions';importtype{ApolloServerPlugin}from'apollo-server-plugin-base';importtype{GraphQLSchemaModule}from'@apollographql/apollo-tools';exporttype{GraphQLSchemaModule};importtype{KeyValueCache}from'apollo-server-caching';exporttype{KeyValueCache};exporttypeContext<T=object>=T;exporttypeContextFunction<FunctionParams=any,ProducedContext=object>=(context: FunctionParams,)=>ValueOrPromise<Context<ProducedContext>>;// A plugin can return an interface that matches `ApolloServerPlugin`, or a// factory function that returns `ApolloServerPlugin`.exporttypePluginDefinition=ApolloServerPlugin|(()=>ApolloServerPlugin);typeBaseConfig=Pick<GraphQLOptions<Context>,|'formatError'|'debug'|'rootValue'|'validationRules'|'executor'|'formatResponse'|'fieldResolver'|'dataSources'|'cache'|'logger'>;exporttypeUnsubscriber=()=>void;exporttypeSchemaChangeCallback=(apiSchema: GraphQLSchema)=>void;exporttypeGraphQLServiceConfig={schema: GraphQLSchema;executor: GraphQLExecutor|null;};exportinterfaceGatewayInterface{load(options: {apollo: ApolloConfig}): Promise<GraphQLServiceConfig>;/** * @deprecated Use `onSchemaLoadOrUpdate` instead */onSchemaChange?(callback: SchemaChangeCallback): Unsubscriber;// TODO: This is optional because older gateways may not have this method,// and we only need it in certain circumstances, so we just error in// those circumstances if we don't have it.onSchemaLoadOrUpdate?(callback: (schemaContext: {apiSchema: GraphQLSchema;coreSupergraphSdl: string;})=>void,): Unsubscriber;stop(): Promise<void>;// Note: this interface used to have an `executor` method, and also return the// executor from `load()`. ApolloServer would only use the former. We dropped// this method and now use the latter, which allows you to make a "mock// gateway" that updates the schema over time but uses normal execution.}// This was the name used for GatewayInterface in AS2; continue to export it so// that older versions of `@apollo/gateway` build against AS3.exportinterfaceGraphQLServiceextendsGatewayInterface{}exporttypeDocumentStore=KeyValueCache<DocumentNode>;// This configuration is shared between all integrations and should include// fields that are not specific to a single integrationexportinterfaceConfig<ContextFunctionParams=any>extendsBaseConfig{modules?: GraphQLSchemaModule[];typeDefs?: DocumentNode|Array<DocumentNode>|string|Array<string>;parseOptions?: ParseOptions;resolvers?: IResolvers|Array<IResolvers>;schema?: GraphQLSchema;context?: Context|ContextFunction<ContextFunctionParams>;introspection?: boolean;mocks?: boolean|IMocks;mockEntireSchema?: boolean;plugins?: PluginDefinition[];persistedQueries?: PersistedQueryOptions|false;gateway?: GatewayInterface;stopOnTerminationSignals?: boolean;apollo?: ApolloConfigInput;nodeEnv?: string;documentStore?: DocumentStore|null;}
              Sours: https://github.com/apollographql/apollo-server/blob/main/packages/apollo-server-core/src/types.ts


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