graphql-interface-inliner

Manually implementing interfaces in GraphQL is lame. This tool inlines interfaces fields into types that implement interfaces.

This makes it to easier maintain your schema. Simply run this on a "dehydrated" schema, and it will produce a "hydrated" schema that can be used with tools that take graph ql schemas as input such as Graphcool or Apollo Server.

Install:

npm install -g graphql-interface-inliner

Usage:

graphql-interface-inliner [options] <file>
inlines interface definitions into type definitions

  Options:

    -V, --version  output the version number
    -i, --input    Print the input schema
    -a, --ast      Print the input ast
    -o, --outast   Print the output ast
    -h, --help     output usage information

Example:

Input File

interface Node {
  id: ID!
}

interface Character {
  name: String!
  friends: [Character]
  appearsIn: [Episode]!
}

type Human implements Node, Character {
  starships: [Starship]
  totalCredits: Int
}

type Droid implements Node, Character {
  primaryFunction: String
}

type Starship implements Node {
}

type Episode implements Node {
}

Output

interface Node {
  id: ID!
}

interface Character {
  name: String!
  friends: [Character]
  appearsIn: [Episode]!
}

type Human implements Node, Character {
  id: ID!
  name: String!
  friends: [Character]
  appearsIn: [Episode]!
  starships: [Starship]
  totalCredits: Int
}

type Droid implements Node, Character {
  id: ID!
  name: String!
  friends: [Character]
  appearsIn: [Episode]!
  primaryFunction: String
}

type Starship implements Node {
  id: ID!
}

type Episode implements Node {
  id: ID!
}

TODO

• support input from stdin
• better error messages