graphql-language-service

graphql-language-service

Note: This package will soon be renamed to graphql-language-service-cli

We welcome your feedback and suggestions.

GraphQL Language Service provides an interface for building GraphQL language services for IDEs.

Partial support for Microsoft's Language Server Protocol is in place, with more to come in the future.

Supported features include:

• Diagnostics (GraphQL syntax linting/validations) (spec-compliant)
• Autocomplete suggestions (spec-compliant)
• Hyperlink to fragment definitions and named types (type, input, enum) definitions (spec-compliant)
• Outline view support for queries

Installation and Usage

Dependencies

An LSP compatible client with it's own file watcher, that sends watch notifications to the server.

DROPPED: GraphQL Language Service no longer depends on Watchman

Installation

git clone [email protected]:graphql/graphql-language-service.git
cd {path/to/your/repo}
npm install ../graphql-language-service

After pulling the latest changes from this repo, be sure to run yarn run build to transform the src/ directory and generate the dist/ directory.

The library includes a node executable file which you can find in ./node_modules/.bin/graphql.js after installation.

GraphQL configuration file (.graphqlrc.yml)

Check out graphql-config

The graphql features we support are:

• customDirectives - ['@myExampleDirective']
• customValidationRules - returns rules array with parameter ValidationContext from graphql/validation;

Using the command-line interface

The node executable contains several commands: server and a command-line language service methods (validate, autocomplete, outline).

Improving this list is a work-in-progress.

GraphQL Language Service Command-Line Interface.
Usage: bin/graphql.js <command> <file>
    [-h | --help]
    [-c | --configDir] {configDir}
    [-t | --text] {textBuffer}
    [-f | --file] {filePath}
    [-s | --schema] {schemaPath}


Options:
  -h, --help        Show help                                          [boolean]
  -t, --text        Text buffer to perform GraphQL diagnostics on.
                    Will defer to --file option if omitted.
                    Overrides the --file option, if any.
                                                                        [string]
  -f, --file        File path to perform GraphQL diagnostics on.
                    Will be ignored if --text option is supplied.
                                                                        [string]
  --row             A row number from the cursor location for GraphQL
                    autocomplete suggestions.
                    If omitted, the last row number will be used.
                                                                        [number]
  --column          A column number from the cursor location for GraphQL
                    autocomplete suggestions.
                    If omitted, the last column number will be used.
                                                                        [number]
  -c, --configDir   Path to the .graphqlrc.yml configuration file.
                    Walks up the directory tree from the provided config
                    directory, or the current working directory, until a
                    .graphqlrc is found or the root directory is found.
                                                                        [string]
  -s, --schemaPath  a path to schema DSL file
                                                                        [string]

At least one command is required.
Commands: "server, validate, autocomplete, outline"