apollo-language-server

What is apollo-language-server?

The apollo-language-server npm package provides tools and utilities for working with GraphQL schemas and operations in an Apollo-based environment. It offers features such as schema validation, query validation, and more, making it easier to develop and maintain GraphQL APIs.

What are apollo-language-server's main functionalities?

Schema Validation

This feature allows you to validate a GraphQL schema to ensure it adheres to the GraphQL specification. The code sample demonstrates how to validate a simple schema and log any validation errors.

const { validateSchema } = require('apollo-language-server');
const schema = `type Query { hello: String }`;
const errors = validateSchema(schema);
if (errors.length > 0) {
  console.error('Schema validation errors:', errors);
} else {
  console.log('Schema is valid');
}

Query Validation

This feature allows you to validate a GraphQL query against a given schema. The code sample shows how to validate a query and log any validation errors.

const { validateQuery } = require('apollo-language-server');
const schema = `type Query { hello: String }`;
const query = `{ hello }`;
const errors = validateQuery(schema, query);
if (errors.length > 0) {
  console.error('Query validation errors:', errors);
} else {
  console.log('Query is valid');
}

Schema Parsing

This feature allows you to parse a GraphQL schema into an abstract syntax tree (AST). The code sample demonstrates how to parse a schema and log the resulting AST.

const { parseSchema } = require('apollo-language-server');
const schema = `type Query { hello: String }`;
const parsedSchema = parseSchema(schema);
console.log('Parsed schema:', parsedSchema);

Other packages similar to apollo-language-server

graphql

The graphql package is the reference implementation of the GraphQL specification. It provides tools for building and executing GraphQL queries, as well as utilities for schema validation and parsing. Compared to apollo-language-server, it is more general-purpose and not specifically tailored for Apollo-based environments.

graphql-tools

The graphql-tools package provides a set of utilities for building and manipulating GraphQL schemas. It includes features for schema stitching, schema transformation, and more. While it overlaps with some of the functionality of apollo-language-server, it is more focused on schema construction and manipulation rather than validation and language server features.

graphql-eslint

The graphql-eslint package integrates GraphQL validation with ESLint, allowing you to lint your GraphQL schema and queries within your codebase. It provides a set of rules for ensuring best practices and catching common errors. Unlike apollo-language-server, it is specifically designed to work with ESLint and focuses on linting rather than general validation and parsing.

README

The README file is missing